Open Access
Physical Review Research, volume 5, issue 2, publication number 023120
Lifshitz transition in titanium carbide driven by a graphene overlayer
Krivenkov M.
1
,
Marchenko Dmitry
1
,
Golias E
2
,
Sajedi M.
1
,
Sánchez-Barriga J.
1, 3
,
Fedorov A. V.
1, 4, 5
,
Yashina Lada V.
1
,
RADER O.
1
,
1
Helmholtz-Zentrum Berlin für Materialien und Energie, BESSY II, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
|
3
IMDEA Nanoscience, C/ Faraday 9, Campus de Cantoblanco, 28049 Madrid, Spain
|
5
Joint Lab Functional Quantum Materials at BESSY II, Albert-Einstein-Strasse 15, 12489 Berlin, Germany
|
Publication type: Journal Article
Publication date: 2023-05-25
Journal:
Physical Review Research
Quartile SCImago
Q1
Quartile WOS
—
Impact factor: 3.9
ISSN: 26431564
General Physics and Astronomy
Abstract
Two-dimensional (2D) Dirac materials are electronically and structurally very sensitive to proximity effects. We demonstrate, however, the opposite effect: that the deposition of a monolayer 2D material could exercise a substantial influence on the substrate electronic structure. Here we investigate TiC(111) and show that a graphene overlayer produces a proximity effect, changing the Fermi surface topology of the TiC from six electron pockets to one hole pocket on the depth of several atomic layers inside the substrate. In addition, the graphene electronic structure undergoes an extreme modification as well. While the Dirac cone remains gapless, it experiences an energy shift of 1.0 eV beyond what was recently achieved for the Lifshitz transition of overdoped graphene. Due to this shift, the antibonding ${\ensuremath{\pi}}^{*}$ band at the $\overline{\mathrm{M}}$ point becomes occupied and observable by photoemission.
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Krivenkov M. et al. Lifshitz transition in titanium carbide driven by a graphene overlayer // Physical Review Research. 2023. Vol. 5. No. 2. 023120
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Krivenkov M., Marchenko D., Golias E., Sajedi M., Frolov A. S., Sánchez-Barriga J., Fedorov A. V., Yashina L. V., RADER O., Varykhalov A. Lifshitz transition in titanium carbide driven by a graphene overlayer // Physical Review Research. 2023. Vol. 5. No. 2. 023120
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TY - JOUR
DO - 10.1103/physrevresearch.5.023120
UR - https://doi.org/10.1103%2Fphysrevresearch.5.023120
TI - Lifshitz transition in titanium carbide driven by a graphene overlayer
T2 - Physical Review Research
AU - Krivenkov, M.
AU - Marchenko, Dmitry
AU - Golias, E
AU - Sajedi, M.
AU - Frolov, Alexander S
AU - Sánchez-Barriga, J.
AU - Fedorov, A. V.
AU - Yashina, Lada V.
AU - RADER, O.
AU - Varykhalov, Andrei
PY - 2023
DA - 2023/05/25 00:00:00
PB - American Physical Society (APS)
IS - 2
VL - 5
SN - 2643-1564
ER -
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@article{2023_Krivenkov,
author = {M. Krivenkov and Dmitry Marchenko and E Golias and M. Sajedi and Alexander S Frolov and J. Sánchez-Barriga and A. V. Fedorov and Lada V. Yashina and O. RADER and Andrei Varykhalov},
title = {Lifshitz transition in titanium carbide driven by a graphene overlayer},
journal = {Physical Review Research},
year = {2023},
volume = {5},
publisher = {American Physical Society (APS)},
month = {may},
url = {https://doi.org/10.1103%2Fphysrevresearch.5.023120},
number = {2},
doi = {10.1103/physrevresearch.5.023120}
}