Title:	Spin-resolved electronic structure of ferroelectric alpha-GeTe and multiferroic Ge1-xMnxTe
Authors:	Krempaský, Juraj Fanciulli, Mauro Pilet, Nicolas Minár, Jan Khan, Wilayat Muntwiler, Matthias Bertran, François Muff, Stefan Weber, Andrew P. Strocov, Vladimir N. Volobuiev, Valentine V. Springholz, Gunther Dil, Jan Hugo
Citation:	KREMPASKÝ, J., FANCIULLI, M., PILET, N., MINÁR, J., KHAN, W., MUNTWILER, M., BERTRAN, F., MUFF, S., WEBER, A. P., STROCOV, V. N., VOLOBUIEV, V. V., SPRINGHOLZ, G., DIL, J. H. Spin-resolved electronic structure of ferroelectric alpha-GeTe and multiferroic Ge1-xMnxTe. Journal of physics and chemistry of solids, 2019, roč. 128, č. MAY 2019, s. 237-244. ISSN 0022-3697.
Issue Date:	2019
Publisher:	Elsevier
Document type:	článek article
URI:	2-s2.0-85034853840 http://hdl.handle.net/11025/39565
ISSN:	0022-3697
Keywords in different language:	surface
Abstract in different language:	Germanium telluride features special spin-electric effects originating from spin-orbit coupling and symmetry breaking by the ferroelectric lattice polarization, which opens up many prospectives for electrically tunable and switchable spin electronic devices. By Mn doping of the alpha-GeTe host lattice, the system becomes a multiferroic semiconductor possessing magnetoelectric properties in which the electric polarization, magnetization and spin texture are coupled to each other. Employing spin- and angle-resolved photoemission spectroscopy in bulk- and surface-sensitive energy ranges and by varying dipole transition matrix elements, we disentangle the bulk, surface and surface-resonance states of the electronic structure and determine the spin textures for selected parameters. From our results we derive a comprehensive model of the a-GeTe surface electronic structure which fits to experimental data and first principle theoretical predictions and we discuss the unconventional evolution of the Rashba-type spin splitting upon manipulation by external B- and E-fields.
Rights:	© Elsevier
Appears in Collections:	Články / Articles (RAM) OBD

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