Spin-orbital mixing in the topological ladder of the two-dimensional metal PtTe2
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23640%2F25%3A43976800" target="_blank" >RIV/49777513:23640/25:43976800 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/prb/abstract/10.1103/vcgr-qjyy" target="_blank" >https://journals.aps.org/prb/abstract/10.1103/vcgr-qjyy</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/vcgr-qjyy" target="_blank" >10.1103/vcgr-qjyy</a>
Alternative languages
Result language
angličtina
Original language name
Spin-orbital mixing in the topological ladder of the two-dimensional metal PtTe2
Original language description
We visualize the topological ladder and band inversions in PtTe2 using spin-polarized photoemission spectroscopy augmented by three-dimensional momentum imaging. This approach enables the detection of spin polarization in dispersive bands and provides access to topological properties beyond the reach of conventional methods. Extensive mapping of spin-momentum space reveals distinct topological surface states, including a surface Dirac cone at a binding energy ??∼2.3eV and additional states at ??∼1.6eV, ??∼1.0eV, and near the Fermi level. The electronic structure analysis demonstrates strong hybridization between Pt and Te atomic orbitals, confirming the nontrivial topology of these surface states. Furthermore, by comparison to one-step model photoemission calculations, we identify a robust correlation between the initial-state and measured spin polarizations while revealing asymmetries in specific experimental spin textures. These asymmetries, absent in the initial states due to symmetry constraints, arise from the breaking of time-reversal symmetry during the photoemission process, emphasizing the crucial influence of symmetries on experimental signatures of topology. A phase analysis of ladder states in real space suggests a route to probe them using photoemission, paving the way towards spectroscopic access to the quantum geometric tensor.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/EH22_008%2F0004572" target="_blank" >EH22_008/0004572: Quantum materials for applications in sustainable technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review B
ISSN
2469-9950
e-ISSN
2469-9969
Volume of the periodical
112
Issue of the periodical within the volume
15
Country of publishing house
US - UNITED STATES
Number of pages
7
Pages from-to
nestránkováno
UT code for WoS article
001605197900015
EID of the result in the Scopus database
2-s2.0-105020567330