Physical Review B, volume 97, issue 24, publication number 245407

Signatures of in-plane and out-of-plane magnetization generated by synchrotron radiation in magnetically doped and pristine topological insulators

Rybkina A.A. 1
Sostina D. M. 1
Surnin Yu. A. 1
Kokh Konstantin A. 1, 2, 3
Tereshchenko O. E. 1, 2, 4
Petaccia L. 5
Di Santo G. 5
Skirdkov P.N. 6, 7, 8
Zvezdin Konstantin A. 6, 7, 8
ZVEZDIN A. K. 6, 7, 8
Kimura Akihiko 9
Chulkov E.V. 1, 10, 11, 12
Krasovskii E. E. 10, 11, 13
Publication typeJournal Article
Publication date2018-06-11
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor3.7
ISSN24699950, 24699969, 10980121, 1550235X
Abstract
Quantum mechanics postulates that any measurement influences the state of the investigated system. Here, by means of angle-, spin-, and time-resolved photoemission experiments and ab initio calculations we demonstrate how non-equal depopulation of the Dirac cone (DC) states with opposite momenta in V-doped and pristine topological insulators (TIs) created by a photoexcitation by linearly polarized synchrotron radiation (SR) is followed by the hole-generated uncompensated spin accumulation and the SR-induced magnetization via the spin-torque effect. We show that the photoexcitation of the DC is asymmetric, that it varies with the photon energy, and that it practically does not change during the relaxation. We find a relation between the photoexcitation asymmetry, the generated spin accumulation and the induced spin polarization of the DC and V 3d states. Experimentally the SR-generated in-plane and out-of-plane magnetization is confirmed by the $k_{\parallel}$-shift of the DC position and by the splitting of the states at the Dirac point even above the Curie temperature. Theoretical predictions and estimations of the measurable physical quantities substantiate the experimental results.

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Shikin A. M. et al. Signatures of in-plane and out-of-plane magnetization generated by synchrotron radiation in magnetically doped and pristine topological insulators // Physical Review B. 2018. Vol. 97. No. 24. 245407
GOST all authors (up to 50) Copy
Shikin A. M., Rybkina A., Estyunin D. A., Sostina D. M., Voroshnin V. Y., Klimovskikh I. I., Rybkin A. G., Surnin Y. A., Kokh K. A., Tereshchenko O. E., Petaccia L., Di Santo G., Skirdkov P., Zvezdin K. A., ZVEZDIN A. K., Kimura A., Chulkov E., Krasovskii E. E. Signatures of in-plane and out-of-plane magnetization generated by synchrotron radiation in magnetically doped and pristine topological insulators // Physical Review B. 2018. Vol. 97. No. 24. 245407
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TY - JOUR
DO - 10.1103/PhysRevB.97.245407
UR - https://doi.org/10.1103%2FPhysRevB.97.245407
TI - Signatures of in-plane and out-of-plane magnetization generated by synchrotron radiation in magnetically doped and pristine topological insulators
T2 - Physical Review B
AU - Shikin, Alexander M.
AU - Rybkina, A.A.
AU - Estyunin, Dmitry A.
AU - Sostina, D. M.
AU - Voroshnin, V. Yu.
AU - Klimovskikh, Ilya I.
AU - Rybkin, Artem G.
AU - Surnin, Yu. A.
AU - Kokh, Konstantin A.
AU - Tereshchenko, O. E.
AU - Petaccia, L.
AU - Di Santo, G.
AU - Skirdkov, P.N.
AU - Zvezdin, Konstantin A.
AU - ZVEZDIN, A. K.
AU - Kimura, Akihiko
AU - Chulkov, E.V.
AU - Krasovskii, E. E.
PY - 2018
DA - 2018/06/11 00:00:00
PB - American Physical Society (APS)
IS - 24
VL - 97
SN - 2469-9950
SN - 2469-9969
SN - 1098-0121
SN - 1550-235X
ER -
BibTex
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@article{2018_Shikin,
author = {Alexander M. Shikin and A.A. Rybkina and Dmitry A. Estyunin and D. M. Sostina and V. Yu. Voroshnin and Ilya I. Klimovskikh and Artem G. Rybkin and Yu. A. Surnin and Konstantin A. Kokh and O. E. Tereshchenko and L. Petaccia and G. Di Santo and P.N. Skirdkov and Konstantin A. Zvezdin and A. K. ZVEZDIN and Akihiko Kimura and E.V. Chulkov and E. E. Krasovskii},
title = {Signatures of in-plane and out-of-plane magnetization generated by synchrotron radiation in magnetically doped and pristine topological insulators},
journal = {Physical Review B},
year = {2018},
volume = {97},
publisher = {American Physical Society (APS)},
month = {jun},
url = {https://doi.org/10.1103%2FPhysRevB.97.245407},
number = {24},
doi = {10.1103/PhysRevB.97.245407}
}
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