TY  - JOUR
AU  - Fujii, Jun
AU  - Ghosh, Barun
AU  - Vobornik, Ivana
AU  - Bari Sarkar, Anan
AU  - Mondal, Debashis
AU  - Kuo, Chia-Nung
AU  - Bocquet, François C.
AU  - Zhang, Lixue
AU  - Boukhvalov, Danil W.
AU  - Lue, Chin Shan
AU  - Agarwal, Amit
AU  - Politano, Antonio
TI  - Mitrofanovite Pt 3 Te 4 : A Topological Metal with Termination-Dependent Surface Band Structure and Strong Spin Polarization
JO  - ACS nano
VL  - 15
IS  - 9
SN  - 1936-086X
CY  - Washington, DC
PB  - Soc.
M1  - FZJ-2021-03383
SP  - 14786–14793
PY  - 2021
AB  - Due to their peculiar quasiparticle excitations, topological metals have high potential for applications in the fields of spintronics, catalysis, and superconductivity. Here, by combining spin- and angle-resolved photoemission spectroscopy, scanning tunneling microscopy/spectroscopy, and density functional theory, we discover surface-termination-dependent topological electronic states in the recently discovered mitrofanovite Pt3Te4. Mitrofanovite crystal is formed by alternating, van der Waals bound layers of Pt2Te2 and PtTe2. Our results demonstrate that mitrofanovite is a topological metal with termination-dependent (i) electronic band structure and (ii) spin texture. Despite their distinct electronic character, both surface terminations are characterized by electronic states exhibiting strong spin polarization with a node at the Γ point and sign reversal across the Γ point, indicating their topological nature and the possibility of realizing two distinct electronic configurations (both of them with topological features) on the surface of the same material.
LB  - PUB:(DE-HGF)16
C6  - 34472336
UR  - <Go to ISI:>//WOS:000703553600074
DO  - DOI:10.1021/acsnano.1c04766
UR  - https://juser.fz-juelich.de/record/894769
ER  -