Journal Article

FZJ-2015-06976

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Spin dynamics and spin freezing at ferromagnetic quantum phase transitions

Schmakat, P. (Corresponding author) ; Wagner, M. ; Ritz, R. ; Bauer, A.Extern* ; Brando, M. ; Deppe, M. ; Duncan, W. ; Duvinage, C. ; Franz, C. ; Geibel, C. ; Grosche, F. M. ; Hirschberger, M. ; Hradil, K. ; Meven, M.MLZ*RWTH*FZJ* ; Neubauer, A. ; Schulz, M. ; Senyshyn, A.MLZ*TUM* ; Süllow, S. ; Pedersen, B.MLZ*TUM* ; Böni, P. ; Pfleiderer, C.

2015
Springer Berlin

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Please use a persistent id in citations: doi:10.1140/epjst/e2015-02445-4

Abstract: We report selected experimental results on the spin dynamics and spin freezing at ferromagnetic quantum phase transitions to illustrate some of the most prominent escape routes by which ferromagnetic quantum criticality is avoided in real materials. In the transition metal Heusler compound Fe2TiSn we observe evidence for incipient ferromagnetic quantum criticality. High pressure studies in MnSi reveal empirical evidence for a topological non-Fermiliquidstate without quantum criticality. Single crystals of the hexagonal Laves phase compound Nb1−yFe2+y provide evidence of a ferromagnetic to spin density wave transition as a function of slight compositional changes. Last but not least, neutron depolarisation imaging in CePd1−xRhx underscore evidence taken from the bulk properties of the formation of a Kondo cluster glass.

Keyword(s): Information and Communication (1st) ; Information and Communication (1st) ; Condensed Matter Physics (2nd) ; Magnetism (2nd) ; Crystallography (2nd)

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Contributing Institute(s):

1. JCNS-FRM-II (JCNS (München) ; Jülich Centre for Neutron Science JCNS (München) ; JCNS-FRM-II)
2. Streumethoden (JCNS-2)

Research Program(s):

1. 6G15 - FRM II / MLZ (POF3-6G15) (POF3-6G15)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (POF3-623) (POF3-623)

Experiment(s):

1. ANTARES: Cold neutron radiography and tomography station (SR4a)
2. HEiDi: Single crystal diffractometer on hot source (SR9b)
3. RESI: Thermal neutron single crystal diffractometer (SR8b)
4. SPODI: High resolution powder diffractometer (SR8a)
5. MIRA: Multipurpose instrument (NL6N)
6. PUMA: Thermal three axes spectrometer (SR7)

Appears in the scientific report 2015

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Database coverage:
; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; No Authors Fulltext ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Thomson Reuters Master Journal List ; Web of Science Core Collection

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