Magnetic Gap of Fe-Doped BiSbTe2Se Bulk Single Crystals Detected by Tunneling Spectroscopy and Gate-Controlled Transports
Rikizo Yano
1, 2
,
Taiki Tsuda
2
,
Hiromi Kashiwaya
5
,
Toru Sasagawa
4
,
Alexander A. Golubov
3, 6
,
V. S. Stolyarov
3, 7
,
Satoshi KASHIWAYA
2
1
4
5
Publication type: Journal Article
Publication date: 2021-04-26
scimago Q1
wos Q1
SJR: 1.394
CiteScore: 8.7
Impact factor: 4.6
ISSN: 19487185
PubMed ID:
33900082
Physical and Theoretical Chemistry
General Materials Science
Abstract
Topological insulators with broken time-reversal symmetry and the Fermi level within the magnetic gap at the Dirac cone provides exotic topological magneto-electronic phenomena. Here, we introduce an improved magnetically doped topological insulator, Fe-doped BiSbTe2Se (Fe-BSTS) bulk single crystal, with an ideal Fermi level. Scanning tunneling microscopy and spectroscopy (STM/STS) measurements revealed that the surface state possesses a Dirac cone with the Dirac point just below the Fermi level by 12 meV. The normalized dI/dV spectra suggest a gap opening with Δmag ∼55 meV, resulting in the Fermi level within the opened gap. Ionic-liquid gated-transport measurements also support the Dirac point just below the Fermi level and the presence of the magnetic gap. The chemical potential of the surface state can be fully tuned by ionic-liquid gating, and thus the Fe-doped BSTS provides an ideal platform to investigate exotic quantum topological phenomena.
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12
Total citations:
12
Citations from 2024:
2
(16%)
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Yano R. et al. Magnetic Gap of Fe-Doped BiSbTe2Se Bulk Single Crystals Detected by Tunneling Spectroscopy and Gate-Controlled Transports // Journal of Physical Chemistry Letters. 2021. Vol. 12. No. 17. pp. 4180-4186.
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Yano R., Kudriashov A., Hirose H. T., Tsuda T., Kashiwaya H., Sasagawa T., Golubov A. A., Stolyarov V. S., KASHIWAYA S. Magnetic Gap of Fe-Doped BiSbTe2Se Bulk Single Crystals Detected by Tunneling Spectroscopy and Gate-Controlled Transports // Journal of Physical Chemistry Letters. 2021. Vol. 12. No. 17. pp. 4180-4186.
Cite this
RIS
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TY - JOUR
DO - 10.1021/acs.jpclett.1c00869
UR - https://doi.org/10.1021/acs.jpclett.1c00869
TI - Magnetic Gap of Fe-Doped BiSbTe2Se Bulk Single Crystals Detected by Tunneling Spectroscopy and Gate-Controlled Transports
T2 - Journal of Physical Chemistry Letters
AU - Yano, Rikizo
AU - Kudriashov, Andrei
AU - Hirose, Hishiro T.
AU - Tsuda, Taiki
AU - Kashiwaya, Hiromi
AU - Sasagawa, Toru
AU - Golubov, Alexander A.
AU - Stolyarov, V. S.
AU - KASHIWAYA, Satoshi
PY - 2021
DA - 2021/04/26
PB - American Chemical Society (ACS)
SP - 4180-4186
IS - 17
VL - 12
PMID - 33900082
SN - 1948-7185
ER -
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BibTex (up to 50 authors)
Copy
@article{2021_Yano,
author = {Rikizo Yano and Andrei Kudriashov and Hishiro T. Hirose and Taiki Tsuda and Hiromi Kashiwaya and Toru Sasagawa and Alexander A. Golubov and V. S. Stolyarov and Satoshi KASHIWAYA},
title = {Magnetic Gap of Fe-Doped BiSbTe2Se Bulk Single Crystals Detected by Tunneling Spectroscopy and Gate-Controlled Transports},
journal = {Journal of Physical Chemistry Letters},
year = {2021},
volume = {12},
publisher = {American Chemical Society (ACS)},
month = {apr},
url = {https://doi.org/10.1021/acs.jpclett.1c00869},
number = {17},
pages = {4180--4186},
doi = {10.1021/acs.jpclett.1c00869}
}
Cite this
MLA
Copy
Yano, Rikizo, et al. “Magnetic Gap of Fe-Doped BiSbTe2Se Bulk Single Crystals Detected by Tunneling Spectroscopy and Gate-Controlled Transports.” Journal of Physical Chemistry Letters, vol. 12, no. 17, Apr. 2021, pp. 4180-4186. https://doi.org/10.1021/acs.jpclett.1c00869.