Forschungszentrum Jülich
Institut für Festkörperforschung

Institute for Electronic Properties

General Overview
linie570

In any condensed matter system, electrons are the "glue" that holds the atoms together. Therefore the electronic structure constitutes a microscopic base for all material properties. The electronic interactions determine whether a solid is metallic, insulating or semiconducting, whether it is transparent or exhibits a distinctive color, whether it is a magnet or a superconductor.

The research program of the Institute for Electronic Properties is devoted towards the investigation of the electronic structure of atoms, clusters, nanostructures, and solids. The ultimate goal is the development of an understanding and thus a base for the control of the properties of new materials.

After the departure of the former institute director Prof. Wolfgang Eberhardt to BESSY in the year 2001 it was decided that in the future the Institute for Electronic Properties should focus on research on magnetic nanostructures. It thus can serve as a nucleus for the various research activities within this field, which exist at the research center. A list of three candidates for the future institute director has been established and negotiations with the first candidate on the list are on the way. We hope that this position can be filled in spring or early summer 2003 so that the institute can resume full operation. In the past year the institute has shrunken considerably due to personnel following Prof. Eberhardt to the BESSY GmbH or taking up an employment in industry. The largest group remaining is the research group on magnetic multilayers, which can well serve as a nucleus for the new "Institute for Electronic Properties of Magnetic Nanostructures". Therefore the activities of this group are highlighted in this overview.

The areas of research of this group can be summarized as follows:

1. Deposition of magnetic thin films and multilayers by various techniques (MBE, ion-beam, and magnetron sputtering).

2. Characterization of magnetic and magnetotransport properties of magnetic thin film and multilayers by LEED, RHEED, MOKE, SQUID, Brillouin light scattering (BLS) and ferromagnetic resonance (FMR), magnetoresistance measurements, I-V characteristics, XPS, AES, XRR, soft x-ray emission (SXE), near-edge x-ray absorption spectroscopy (NEXAFS), AFM, and STM.

3. Definition of stripes and junctions by optical and e-beam lithography down to the 100 nm scale for transport measurements.

4. Instrumental development for (i) an in-situ chemical analysis by XPS and AES in the ion-beam sputtering machine and (ii) electrical transport measurements at low temperature and in a magnetic field with an enhanced sensitivity.

Some important research results in 2002 were:

  • The coexistence of strong antiferromagnetic interlayer coupling and electronic transport (in CPP geometry) via tunneling could be shown for epitaxial Fe/Si/Fe(001) trilayers. The existence of a band gap in the Si spacer layer at the Fermi energy providing a tunneling barrier is confirmed by preliminary spectroscopic data (SXE and NEXAFS, in collaboration with S. Eisebitt and A. Zimina, BESSY) and correlates with sharp interfaces observed by TEM (in collaboration with C. Jia). These results are an important piece of information for the theoretical understanding of the coupling mechanism across Si spacers.

  • Development of a new theoretical model to calculate BLS spectra and MOKE hysteresis loops for magnetic multilayers with strong antiferromagnetic coupling, for which a twisted magnetization state occurs within each magnetic layer. The excellent agreement between MOKE and BLS measurements and the fits according to the new model confirm the existence of the proposed twisted magnetization state.

  • Successful deposition of VITROVAC thin films with good soft magnetic properties by sputtering from targets built from amorphous VITROVAC ribbons (in collaboration with U. Poppe). The magnetic characterization by BLS and FMR indicates preparation and thickness dependent variations of the film magnetization.

  • Optimization of the GMR ratio of Co/Cu/Permalloy pseudo spin valves by varying the Ar pressure during magnetron sputter deposition. The dependence is non-monotonic, and a maximum of 4% is achieved at an intermediate pressure.

  • The GMR ratio of Co/Cu multilayers strongly depends on the number of bilayers. This dependence can be understood by assuming that the first few bilayers are not significantly contributing to the GMR effect but act as buffer layers which improve the growth quality of the subsequent bilayers.

  • pairs of samples with rough and smooth interfaces could be confirmed for a single sample with a wedge-shaped bottom Fe layer: The oscillations of the RHEED intensity (measured along the wedge after deposition) correlate with oscillations of the GMR ratio (measured at different position along the wedge after lithographically defining stripe conductors perpendicular to the wedge slope). These results allow excluding any influence of different buffer layer qualities on the GMR ratios.

  • trilayers could be prepared by a combination of e-beam and optical lithography. The contacts with a diameter of about 200 nm show metallic behavior and a currently not understood dependence of the resistance on the current density. A new process for the fabrication of nanopillars of epitaxial Fe/Cr/Fe multilayers has been developed as an alternative route for the observation of current-induced magnetic switching.

Most members of the former cluster group have left the institute and with them the equipment for cluster deposition has been transferred to Berlin. However, the existing cluster beam apperatus is being upgrated with a linear double reflectron. The most important scientific achievement in research on clusters was the interpretation of scanning tunneling spectroscopy data of endohedral fullerenes Ce@C44 and Ce@C50. Orbitals and orbital symmetries of the fullerene molecules were calculated and assigned.

Work continued on the two soft x-ray beamlines of IFF at DELTA and BESSY. For the latter beamline (UE56/1-SGM) the beam stability was improved by the installation of a more sophisticated mirror chamber. The focus at the sample position could be improved up to a 70 mm vertical spot size. Results obtained on the two beamlines include:

  • Investigation of the electronic structure of Co and Cu submonolayers on stepped W(110) surfaces. The dispertion of the electronic states of Co and Cu is compatible with the assumption of quasi on dimensional structures, e.g., monoatomic chains.

  • For the Heussler alloy Co2CrxFe1-xAl the electronic structure was investigated by magnetic x-ray circular dichroism (MXCD) and the domains were observed by photoemission electron microscopy (PEEM). The observed magnetic moments of Fe and Cr are considerably larger than those reported in metallic compounds.

  • Soft x-ray spectroscopy of fluids. Here first observations of concentration dependent differences in adsorption edges of iron and other 3d metal ions in solution could be made.

In 2002 again some members of the institute received personal awards and achievements:

Dr. S. Blügel has been appointed institute director for the Institute Theory I of the IFF.

Prof. Dr. P. Grünberg received an honorary doctorate from the Ruhr-University Bochum.

Dr. P.S. Bechthold was appointed APL Professor at the University of Cologne.

 

The following students have been awarded their diploma and Ph.D. degrees in 2002:

Diploma:

Henning Dassow: Herstellung von Nanokontakten zum Nachweis strominduzierten magnetischen Schaltens

Bernd Heitkamp: Charakterisierung magnetischer Materialien mit X-PEEM

Lars Pohlmann: Transporteigenschaften in Fe/Si/Fe Schichtsystemen mit halbleitenden Zwischenschichten

Doctorate:

Jörg Wingbermühle: Transportphänomene in magnetischen Tunnelkontakten unter besonderer Berücksichtigung der Ionenstrahldeposition

Christopher Zilkens: Gestufte Oberflächen und quasieindimensionale Strukturen Photoemission an 3d Metallen auf W(110)

Matthias Buchmeier: Magnetische Schichtsysteme: Veränderung statischer und dynamischer magnetischer Eigenschaften durch starke Zwischenschichtkopplung

I would like to close this report by thanking all members of the institute for their dedicated work during the past year.

Thomas Brückel

 

 

Personnel 2002/2003 and areas of activity Scientists Research Areas

 
Scientists
 
 
Field of Activity
 
Dr. L. Baumgarten F-sec laser photoemission and high resolution photoemission from solids
Prof. P.S. BechtholdElectronic structure, geometry and materials properties of clusters
Dr. G. Bihlmayer
until 31.10.02
Electronic structure theory of solids and multilayers
Dr. D.E. BürglerMagnetic multilayers for sensors and memory applications
Prof. Dr. Th. BrückelInterims director
Dr. S. CrammBeamlines at DELTA and BESSY II
Dr. R.R. GareevMagnetic multilayers for sensors and memory applications
Prof. P. GrünbergMagnetic multilayers for sensors and memory applications
Dr. J. Morenzin
until 31.08.02
Development of a magnetic security system
Dr. A. PaulMagnetic multilayers for sensors and memory applications

 

 
Technical Engineers
 
W. Bergs Cluster beam apparatus
K. Bickmann Vacuum-Laboratory
J. GollnickSecretary
F.-J. KöhneMagnetic multilayers for sensors and memory applications
J. LauerElectronic-Laboratory
H. Pfeiferlectronic-Laboratory
C. SchifferElectronic-Laboratory
R. SchreiberMagnetic multilayers for sensors and memory applications

 

 
Thesis Students
 
H. Braak
(Diploma-student)
Magnetic multilayers for sensors and memory applications
M. Buchmeier
(PhD-student)
Magnetic multilayers for sensors and memory applications
M. Breidbach
(PhD-student)
Magnetic multilayers for sensors and memory applications
T. Damm
(PhD-student)
Magnetic multilayers for sensors and memory applications
H. Dassow
(PhD-student)
Magnetic multilayers for sensors and memory applications
M. Heide
(PhD-student)
until 31.12.02
STM-theory
B. Heitkamp
(Diploma-student)
until 31.03.02
Photoelectron microscopy
L. Pohlmann
(PhD-student)
Magnetic multilayers for sensors and memory applications
D. Wortmann
(PhD-student)
until 31.12.02
Magnetic multilayers for sensors and memory applications
C. Zilkens
(PhD-student)
until 31.01.02
F-sec laser photoemission and high resolution photoemission from solids

 

 
Trainees
 
D. Esser Electronic-Laboratory

 

 

Publications in journals

Bode,M.*; Heinze,S.*; Hennefarth,M.*; Pietzsch,O.*; Kubetzka,A.*; Getzlaff,M.*; Wiesendanger,R.*; Nie,X.; Bihlmayer,G.; Blügel,S.
Structural, electronic and magnetic properties of a Mn monolayer on W(110)
Physical review B, 66 (2002), S. 014425

Bode,M.*; Heinze,S.; Kubetzka,A.*; Pietzsch,O.*; Nie,X.; Bihlmayer,G.; Blügel,S.; Wiesendanger,R.*
Magnetization-direction-dependent local electronic structure probed by scanning tunneling spectroscopy
Physical review letters, 89 (2002), S. 237205

Eberhardt,W.
Clusters as new materials
Surface science, 500 (2002), S. 242 - 270

Galanakis,I.; Bihlmayer,G.; Bellini,V.*; Papanikolaou,N.*; Zeller,R.; Blügel,S.; Dederichs,P.H.
Broken bond counting rule for the surface energies of noble metals
Europhysics letters, 58 (2002), S. 751

Gambardella,P.*; Dallmeyer,A.; Maiti,K.; Malagoli,M. C.; Eberhardt,W.; Kern,K.; Carbone,C.
Ferromagnetism in one-dimensional monatomic metal chains
Nature, 416 (2002), S. 301 - 304

Gareev,R. R.; Bürgler,D. E.; Buchmeier,M.; Schreiber,R.; Grünberg,P.
Enhanced antiferromagnetic exchange coupling in Fe/Si/Fe epitaxial trilayers with Fe0.5Si0.5 boundary layers
Applied physics letters, 81 (2002), 7, S. 1264

Gareev,R.R.; Bürgler,D.; Buchmeier,M.; Schreiber,R.; Grünberg,P.
Very strong interlayer exchange coupling in epitaxial Fe/Fe1-xSix/Fe trilayers (x = 0.4-1.0)
Journal of magnetism and magnetic materials, 240 (2002), S. 235 - 237

Grünberg,P.; Bürgler,D.E.; Gareev,R.R.; Olligs,D.; Buchmeier,M.; Breidbach,M.; Kuanr,B.; Schreiber,R.
Experiments on the relation between GMR and interface roughness and on the interlayer exchange coupling across semiconductors
Journal of physics D - applied physics, 35 (2002), S. 2403

Heinze,S.*; Kurz,Ph.; Wortmann,D.; Bihlmayer,G.; Blügel,S.
Complex magnetism in ultra-thin films : atomic-scale spin structures and resolution by the spin-polarized scanning tunneling microscope
Applied physics A, 75 (2002), S. 25

Hoffmann,R.*; Bürgler,D. E.; van Schendel,P.J.A.*; Hug,H. J.*; Martin,S.*; Güntherodt,H.-J.*
Perpendicular magnetic domains of a thin Ag/Fe/Ag film observed by magnetic force microscopy at room temperature
Journal of magnetism and magnetic materials, 250 (2002), S. 32

Klingeler,R.; Bechthold,P. S.; Neeb,M.; Eberhardt,W.
An experimental setup for nondestructive deposition of size-selected clusters
Review of scientific instruments, 73 (2002), 4, S. 1803 - 1808

Klingeler,R.; Pontius,N.; Lüttgens,G.; Bechthold,P. S.; Neeb,M.; Eberhardt,W.
Photoelectron spectroscopy of GdO
Physical review A, 65 (2002), S. 032502

Kuanr,B.; Buchmeier,M.; Bürgler,D.E.; Grünberg,P.
Exchange coupling of MBE grown Fe/Al/Fe trilayers by dynamic techniques
Journal of applied physics, 91 (2002), S. 7209

Kurz,Ph.; Bihlmayer,G.; Hirai,K.*; Blügel,S.
Itinerant magnets on a triangular Cu(111) lattice
Phase transitions, 75 (2002), S. 101 - 112

Kurz,Ph.; Bihlmayer,G.; Blügel,S.
Magnetism and electronic structure of hcp Gd and the Gd(0001) surface
Journal of physics: condensed matter, 14 (2002), S. 6353

Lüttgens,G.; Pontius,N.; Bechthold,P. S.; Neeb,M.; Eberhardt,W.
Photon-induced thermal desorption of CO from small metal-carbonyl clusters
Physical review letters, 88 (2002), S. 076102

Maiti,K.; Malagoli,M. C.; Dallmeyer,A.; Carbone,C.
Finite temperature magnetism in Gd : evidence against a stoner behavior
Physical review letters, 88 (2002), 16, S. 167205

Maus-Friedrichs,W.*; Frerichs,M.*; Gunhold,A.*; Krischok,S.*; Kempter,V.*; Bihlmayer,G.
The characterization of SrTiO3(001) with MIES, UPS(HeI) and first-principles calculations
Surface science, 515 (2002), S. 499 - 506

Olligs,D.; Bürgler,D. E.; Wang,Y. G.; Kentzinger,E.; Rücker,U.; Schreiber,R.; Brückel,Th.; Grünberg,P.
Roughness-induced enhancement of giant magnetoresistance in epitaxial Fe/Cr/Fe(001) trilayers
Europhysics letters, 59 (2002), 3, S. 458 - 464

Paul,A.
Effect of interface roughness on magnetic multilayers of Fe/Tb and Fe/Cr
Journal of magnetism and magnetic materials, 240 (2002), S. 497 - 500

Paul,A.; Lodha,G. S.*
Interface roughness correlation due to changing layer period in Pt/C multilayers
Physical review B, 65 (2002), S. 245426

Pontius,N.; Lüttgens,G.; Bechthold,P. S.; Neeb,M.; Eberhardt,W.
Size dependent hot-electron dynamics in small Pdn- clusters
Journal of chemical physics, 115 (2001), S. 10479

Schondelmaier, D.; Cramm, S.; Klingeler, R.; Eberhardt, W.
Orientation and self-assembly of hydrophobic fluoroalkylsilane
Langmuir, 18 (2002) 16, S. 6242 - 6245

Wortmann,D.; Ishida,H.*; Blügel,S.
An ab initio Green-function formulation of the transfer matrix : application to complex bandstructures
Physical review B, 65 (2002), S. 165103

ortmann,D.; Ishida,H.*; Blügel,S.
Embedded Green-function approach to the ballistic electron tran sport through an interface
Physical review B, 66 (2002), S. 075113

Wortmann,D.; Kurz,Ph.; Heinze,S.*; Hirai,K.*; Bihlmayer,G.; Blügel,S.
Resolving noncollinear magnetism by spin-polarized scanning tunneling microscopy
Journal of magnetism and magnetic materials, 240 (2002), S. 57 - 63

Wortmann,D.; Kurz,Ph.; Heinze,S.; Hirai,K.*; Bihlmayer,G.; Blügel,S.
Resolving noncollinear magnetism by spin-polarized scanning tunneling microscopy
Journal of magnetism and magnetic materials, 240 (2002), S. 57 - 63
 


Invited talks

Bihlmayer,G.; Kurz,P.; Blügel,S.
Ab-initio prediction of complex magnetic structures in low dimensions
19th General Conference of the EPS Condensed Matter Division
Brighton: 07.04.2002 - 11.04.2002

Bihlmayer,G.; Kurz,Ph.; Förster,F.; Blügel,S.
Non-collinear ab-initio calculations with the FLAPW-method
ESF/TMR Workshop : Noncollinear Magnetism
Wien: 08.03.2001

Blügel,S.; Heinze,S.*; Wortmann,D.; Bihlmayer,G.
Theorie komplexer magnetischer Strukturen in d¸nnen Schichten und deren Auflˆsung mittels des spin-polarisierten STM
DPG-Frühjahrstagung
Hamburg: 26.03.2001 - 30.03.2001

Bode,M.*; Pietzsch,O.*; Kubetzka,A.*; Heinze,S.*; Kleiber,M.*; Ravlic,R.*; Nie,X.; Blügel,S.; Wiesendanger,R.*
Spin-polarisierte Rastertunnelmikroskopie
DPG-Frühjahrstagung
Hamburg: 26.03.2001 - 30.03.2001

Buchmeier,M.; Kuanr,B.; Gareev,R. R.; Bürgler,D. E.; Grünberg,P.
Studies of strongly coupled epitaxial Fe(001)/Al/Fe trilayers by brillouin light scattering
DPG-Frühjahrstagung
Regensburg: 11.03.2002

Bürgler,D.E.
Interlayer coupling in Fe/Fe-(1-x)Si-x/Fe(001) structures
ICMFS 2002
Kyoto, Japan: 08.03.2002

Förster,F.; Bihlmayer,G.; Blügel,S.
Structure and magnetism of thin Fe films on Cu(100)
Symposium on Surface Science
St. Christoph: 03.03.2002 - 09.03.2002

Förster,F.; Bihlmayer,G.; Blügel,S.
Structure and magnetism of thin Fe films on Cu(100)
Symposium on Surface Science 2002
St. Christoph am Arlberg: 03.03.2002 - 09.03.2002

Gareev,R. R.; Bürgler,D. E.; Buchmeier,M.; Schreiber,R.; Grünberg,P.
Antiferromagnetic interlayer exchange coupling in MBE-grown Fe/Fe1-xSix/Fe structures
DPG-Frühjahrstagung
Regensburg: 11.03.2002

Grünberg,P.; Bürgler,D.E.; Gareev,R.R.; Buchmeier,M.
Magnetic multilayers : exchange coupling of ferromagnetic films across metallic and semiconducting interlayers
281. WE Heraeus Seminar
Wandlitz: 12.06.2002 - 15.06.2002

Heide,M.; Nie,X.; Bihlmayer,G.; Blügel,S.
Ab initio investigations of Fe/W(110) : magnetic structure of domain-walls
DPG-Frühjahrstagung
Regensburg: 11.03.2002 - 15.03.2002

Neeb,M.; Breuer,C.; Klingeler,R.; Blanchard,A.; Wirth,I.; Bechthold,P. S.; Eberhardt,W.
Tunneling spectroscopy on small endohedral metallofullerenes on HOPG
The Electrochemical Society Centennial Meeting
Philadelphia, USA: 12.05.2002 - 17.05.2002

Neeb,M.; Breuer,C.; Klingeler,R.; Blanchard,A.; Wirth,I.; Bechthold,P. S.; Eberhardt,W.
Tunnelspektroskopie an kleinen metalldotierten Fullerenen auf HOPG
DPG-Frühjahrstagung
Regensburg: 11.03.2002 - 15.03.2002

Neeb,M.; Pontius,N.; Lüttgens,G.; Bechthold,P. S.; Eberhardt,W.
Photoelectron spectroscopy on clusters as new materials
New Opportunities in Ultrafast Science using X-rays : Workshop
Napa, CA: 14.04.2002 - 17.04.2002

Wortmann,D.
Spin-polarized ballistic electron transport through an interface by an embedded Green-function method
ESCM 2002 : Electronic Structure and Computational Magnetism
Washington, DC: 14.07.2002 - 17.07.2002
 


Other talks

Bürgler,D. E.
Zwischenschicht-Kopplung über metallische, amorphe, zusammengesetzte und halbleitende Zwischenschichten
Kolloquium : RWTH Aachen
Aachen: 10.01.2002

Bürgler,D. E.; Grünberg,P.
Structures of thin magnetic films separated by metallic or semiconducting interlayers : growth, structural, magnetic and magnetotransport properties
Seminar : Tohoku University
Sendai, Japan: 12.03.2002

Bürgler,D.E.
Kopplungs- und Transportph‰nomene in magnetischen Nanostrukturen
IFF-Kolloquium : Forschungszentrum Jülich
Jülich: 25.05.2002

Bürgler,D.E.
Magnetische Zwischenschichtkopplung über nicht-metallische Zwischenschichten
SFB-Kolloquium : Universität Bochum
Bochum: 17.10.2002

Bürgler,D.E.; Grünberg,P.
Structures of thin magnetic films separated by metallic or semiconducting interlayers : growth, structural, magnetic and magnetotransport properties
Seminar NTT
Atsugi, Japan: 15.03.2002

Cramm,S.
Installation and first use of the IFF-IEE beamlines
Beiratstreffen im IFF : Forschungszentrum Jülich
Jülich: 21.03.2002

Damm,T.
Fortschritte Ionenstrahl-Sputteranlage
BMBF-Leitprojekt "Magneto-Elektronik"
Bielefeld: 29.05.2002

Grünberg,P.
Experiments on the relation between GMR and interface roughness and on the interlayer exchange coupling across semiconductors
NTT
Tokyo, Japan: 13.03.2002

Grünberg,P.
Interlayer exchange coupling across metals and insulators
Kolloquium : Universite Paris Sud
Paris, France: 31.10.2002

Grünberg,P.
Magnetische Multilagen
Rundgespräch Schichtsysteme
Bad Honnef: 14.02.2002

Grünberg,P.; Bürgler,D.E.
Experiments on the relation between GMR and interface roughness and on the interlayer exchange coupling across semiconductors
Institute for Materials Research
Sendai, Japan: 11.03.2002

Neeb,M.; Pontius,N.; Lüttgens,G.; Bechthold,P. S.; Eberhardt,W.
Time-resolved photoelectron spectroscopy on clusters
BESSY FEL Workshop
Berlin: 04.12.2002
 


Posters

Breidbach,M.; Olligs,D.; Bürgler,D.E.; Schreiber,R.; Grünberg,P.
Roughness-induced enhancement of giant magnetoresistance in epitaxial Fe/Cr/Fe(001) trilayers
HGF-Workshop 'Kondensierte Materie' : Forschungszentrum Jülich
Jülich: 06.11.2002

Buchmeier,M.; Kuanr,B. K.; Dassow,H.; Bürgler,D. E.; Grünberg,P.
Studies of strongly coupled epitaxial Fe(001)/Al/Fe trilayers by brillouin light scattering
3-Königs-Treffen : WE-Heraeus 2002
07.01.2002 - 09.01.2002

Buchmeier,M.; Kuanr,B.K.; Schreiber,R.; Bürgler,D.E.; Grünberg,P.
Studies of strongly coupled epitaxial Fe(001)/Al/Fe trilayers by Brillouin Light Scattering
ICMFS 2002
Kyoto, Japan: 05.03.2002

Buchmeier,M.; Kuanr,B.K.; Schreiber,R.; Bürgler,D.E.; Grünberg,P.
Studies of strongly coupled epitaxial Fe(001)/Al/Fe trilayers by Brillouin Light Scattering
HGF-Workshop 'Kondensierte Materie' : Forschungszentrum Jülich
Jülich: 06.11.2002

Bürgler,D. E.; Gareev,R. R.; Buchmeier,M.; Schreiber,R.; Grünberg,P.
Interlayer exchange coupling across iron-silicide spacers with varying Si content
Gordon Research Conference on Magnetic Nanostructures
Il Ciocco, Italien: 28.04.2002 - 03.05.2002

Cramm,S.
First experiments and tests at beamline Ue56/1
BESSY User Meeting
Berlin: 09.12.2002

Damm,T.; Paul,A.; Bürgler,D.E.; Grünberg,P.; Jia,C*
Ion-beam and magnetron sputtering for the preparation of magnetic multilayers
HGF-Workshop 'Kondensierte Materie' : Forschungszentrum Jülich
Jülich: 06.11.2002

Dassow,H.; Bürgler,D.E.; Grünberg,P.; Steffen,A.*; Lehmann,R.*; van der Hart,A.*
Fabrication of nanocontacts for current induced remagnetization of Fe/Cr/Fe layers
HGF-Workshop 'Kondensierte Materie' : Forschungszentrum Jülich
Jülich: 06.11.2002
I02

Gareev,R. R.; Bürgler,D. E.; Buchmeier,M.; Schreiber,R.; Grünberg,P.
Interlayer exchange coupling in Fe/FeSi/ /Si/FeSi/Fe structures with combined metallic- and insulating-type spacers
MORIS 02 : Magneto Optical Recording International Symposium
05.05.2002 - 08.05.2002

Gareev,R.R.; Bürgler,D.E.; Pohlmann,L.; Buchmeier,M.; Schreiber,R.; Grünberg,P.; Cramm,S.; Qin,Y.L.*; Jia,C.L.*; Siegel,M.*; Eisebitte,S.*; Zimina,A.
Magnetic interlayer coupling across non-metallic spacer layers
HGF-Workshop Kondensierte Materie : Forschungszentrum Jülich
Jülich: 06.11.2002

Gareev,R.R.; Pohlmann,L. L.; Stein,S.; Bürgler,D.E.; Grünberg,P.
Tunneling across epitaxial Fe/Si/Fe structures with strong antiferromagnetic coupling
MMM 2002 : 47th Annual Conference on Magnetism & Magnetic Materials
Tampa, Fla.: 11.11.2002 - 15.11.2002

Gareev,R.R.; Pohlmann,L.; Stein,S.; Bürgler,D.E.; Grünberg,P. A.
Tunneling across epitaxial Fe/Si/Fe structures with strong antiferromagnetic coupling
47th Annual Conference on Magnetism & Magnetic Materials
Tampa, Florida: 11.11.2002 - 15.11.2002

Heide,M.; Bihlmayer,G.; Blügel,S.
Magnetic structure of domain walls in ultrathin Fe films on the W(110) surface
DPG-Frühjahrstagung
11.03.2002 - 15.03.2002

Heide,M.; Heinze,S.*; Nie,X.; Bihlmayer,G.; Blügel,S.
Ab initio investigation of Fe/W(110) : magnetism, domain-walls, STM-images
3-Königs-Treffen : WE-Heraeus 2002
07.01.2002 - 09.01.2002

Heide,M.; Heinze,S.*; Nie,X.; Bihlmayer,G.; Blügel,S.
Ab initio investigations of Fe/W(110) : magnetism, domain-walls, STM-images 269
WE-Heraeus Seminar on Magnetism on the Sub-Micrometer Scale : Interactions and Microscopy
Bad Honnef: 07.01.2002 - 09.01.2002

Heide,M.; Nie,X.; Bihlmayer,G.; Blügel,S.
Ab initio investigations of Fe/W(110) : magnetic structure of Domain-Walls
WE Heraeus Seminar
Berlin: 11.06.2002 - 15.06.2002

Heide,M.; Nie,X.; Bihlmayer,G.; Blügel,S.
Ab initio investigations of Fe/W(110) : magnetic structure of domain-walls
2nd Annual Meeting of the RTN (Computational Magnetoelectronics)
Oleron Island, France: 05.10.2002 - 09.10.2002

Blügel,S.
Ab initio investigations of Fe/W(110) : magnetic structure of domain-walls 281
WE-Heraeus Seminar on Spin-Orbit Interaction and Local Structure
Wandlitz: 12.06.2002 - 15.06.2002

Paul,A.; Damm,T.; Bürgler,D.E.; Stein,S.; Kohlstedt,H.; Grünberg,P.
Correlation of magnetotransport and structure evolution in sputtered Co/Cu multilayers
HGF-Workshop Kondensierte Materie : Forschungszentrum Jülich
Jülich: 06.11.2002

Wortmann,D.; Bihlmayer,G.; Blügel,S.
A transfer matrix method for ballistic transport : MgO/Fe (001)
19th General Conference of the EPS Condensed Matter Division
Brighton: 07.04.2002 - 11.04.2002

Wortmann,D.; Ishida,H.*; Blügel,S.
A transfer matrix method for ballistic transport : MgO/Fe(001)
Physical Society Meeting of the European Physical Society CMD19CMMP
Brighton, UK: 07.04.2002 - 11.04.2002

Wortmann,D.; Ishida,H.*; Blügel,S.
An embedded Green-function approach to the ballistic electron transport through an interface
RTN Magnetoelectronics Mid-Term Meeting
Oleron, France: 05.10.2002 - 09.10.2002

Wortmann,D.; Ishida,S.*; Blügel,S.
An embedded Green function approach to the ballistic electron transport through an interface
Trends in Nanotechnology Conference
Santiago de Compostela, Spain: 09.09.2002 - 13.09.2002
 
Pd.D. Theses

Zilkens, C.
Gestufte Oberflächen und Quasieindimensionale Strukturen Photoemission and 3d Metallen auf W(110)
2002
Köln, Univ., Diss., 2002

 


 

unten

© Forschungszentrum JülichOnline 2003
Alle Rechte vorbehalten