000972158 001__ 972158
000972158 005__ 20230210201822.0
000972158 037__ $$aFZJ-2023-01102
000972158 041__ $$aEnglish
000972158 1001_ $$0P:(DE-Juel1)143949$$aSchnedler, Michael$$b0$$eCorresponding author
000972158 1112_ $$a48th Conference on the Physics and Chemistry of Surfaces and Interfaces$$cLos Angeles$$d2023-01-15 - 2023-01-19$$gPCSI 48$$wUSA
000972158 245__ $$aSurface Calibrated Electron Holography: Anomalous Strain Relaxation and Minimization of Polarization Changes at III-Nitride Hetero-Interfaces
000972158 260__ $$c2023
000972158 3367_ $$033$$2EndNote$$aConference Paper
000972158 3367_ $$2DataCite$$aOther
000972158 3367_ $$2BibTeX$$aINPROCEEDINGS
000972158 3367_ $$2DRIVER$$aconferenceObject
000972158 3367_ $$2ORCID$$aLECTURE_SPEECH
000972158 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1676026502_25060$$xPlenary/Keynote
000972158 520__ $$aPolarization and electron affinity changes at Al0.06Ga0.94N/GaN and In0.05Ga0.95N/ Al0.06Ga0.94N interfaces are quantified by off-axis electron holography (EH) in transmission electron microscopy (TEM), in conjunction with scanning tunneling microscopy and spectroscopy, as well as self-consistent simulations of the electrostatic potential and electron phase maps. The central problem of quantitative EH is that at the surfaces of the thin TEM lamellae a defect-induced pinning occurs, which alters the phase contrast. Therefore, we calibrated the electron optical phase maps using a delta-doped layer at the GaN buffer/substrate interface by determining the energy of the pinning level at the surface to 0.69 eV above the VBM (consistent with pinning by nitrogen vacancies). The such calibrated EH provides quantification of the key interface properties: The biaxially relaxed In0.05Ga0.95N/ Al0.06Ga0.94N interface exhibits polarization and electron affinity changes as theoretically expected. However, at the Al0.06Ga0.94N/GaN interface anomalous lattice relaxations and vanishing polarization and electron affinity changes occur, whose underlying physical origin is anticipated to be total energy minimization by the minimization of Coulomb interactions between the polarization-induced interface charges.
000972158 536__ $$0G:(DE-HGF)POF4-5351$$a5351 - Platform for Correlative, In Situ and Operando Characterization (POF4-535)$$cPOF4-535$$fPOF IV$$x0
000972158 7001_ $$0P:(DE-Juel1)171441$$aWang, Yuhan$$b1
000972158 7001_ $$0P:(DE-Juel1)173944$$aLan, Qianqian$$b2
000972158 7001_ $$0P:(DE-Juel1)165965$$aZheng, Fengshan$$b3
000972158 7001_ $$0P:(DE-Juel1)176471$$aFreter, Lars$$b4
000972158 7001_ $$0P:(DE-Juel1)180451$$aLu, Yan$$b5$$ufzj
000972158 7001_ $$0P:(DE-Juel1)133840$$aBreuer, Uwe$$b6
000972158 7001_ $$0P:(DE-HGF)0$$aEisele, Holger$$b7
000972158 7001_ $$0P:(DE-HGF)0$$aCarlin, J.$$b8
000972158 7001_ $$0P:(DE-HGF)0$$aButté, J.$$b9
000972158 7001_ $$0P:(DE-HGF)0$$aGrandjean, N.$$b10
000972158 7001_ $$0P:(DE-Juel1)144121$$aDunin-Borkowski, Rafal$$b11
000972158 7001_ $$0P:(DE-Juel1)130627$$aEbert, Philipp$$b12
000972158 909CO $$ooai:juser.fz-juelich.de:972158$$pVDB
000972158 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)143949$$aForschungszentrum Jülich$$b0$$kFZJ
000972158 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)173944$$aForschungszentrum Jülich$$b2$$kFZJ
000972158 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)165965$$aForschungszentrum Jülich$$b3$$kFZJ
000972158 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)176471$$aForschungszentrum Jülich$$b4$$kFZJ
000972158 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)180451$$aForschungszentrum Jülich$$b5$$kFZJ
000972158 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a Otto-von-Guericke-Universität Magdeburg$$b7
000972158 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a École Polytechnique Fédérale de Lausanne$$b8
000972158 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a École Polytechnique Fédérale de Lausanne$$b9
000972158 9101_ $$0I:(DE-HGF)0$$6P:(DE-HGF)0$$a École Polytechnique Fédérale de Lausanne$$b10
000972158 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)144121$$aForschungszentrum Jülich$$b11$$kFZJ
000972158 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130627$$aForschungszentrum Jülich$$b12$$kFZJ
000972158 9131_ $$0G:(DE-HGF)POF4-535$$1G:(DE-HGF)POF4-530$$2G:(DE-HGF)POF4-500$$3G:(DE-HGF)POF4$$4G:(DE-HGF)POF$$9G:(DE-HGF)POF4-5351$$aDE-HGF$$bKey Technologies$$lMaterials Systems Engineering$$vMaterials Information Discovery$$x0
000972158 9141_ $$y2023
000972158 920__ $$lyes
000972158 9201_ $$0I:(DE-Juel1)ER-C-1-20170209$$kER-C-1$$lPhysik Nanoskaliger Systeme$$x0
000972158 980__ $$aconf
000972158 980__ $$aVDB
000972158 980__ $$aI:(DE-Juel1)ER-C-1-20170209
000972158 980__ $$aUNRESTRICTED