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

A. M. Shikin, A. A. Rybkina, D. A. Estiunin, D. M. Sostina, V. Yu Voroshnin, I. I. Klimovskikh, A. G. Rybkin, Yu A. Surnin, K. A. Kokh, O. E. Tereshchenko, L. Petaccia, G. Di Santo, P. N. Skirdkov, A. K. Zvezdin, A. K. Zvezdin, A. Kimura, E. V. Chulkov, E. E. Krasovskii

Research output

1 Citation (Scopus)

Abstract

Possibility of in-plane and out-of-plane magnetization generated by synchrotron radiation (SR) in magnetically doped and pristine topological insulators (TIs) is demonstrated and studied by angle-resolved photoemission spectroscopy. We show experimentally and by ab initio calculations how nonequal depopulation of the Dirac cone (DC) states with opposite momenta in V-doped and pristine TIs generated by linearly polarized SR leads to the hole-generated uncompensated spin accumulation followed by the SR-induced magnetization via spin-torque effect. Moreover, the photoexcitation of the DC is asymmetric, and it varies with the photon energy. We find a relation between the photoexcitation asymmetry, the generated spin accumulation, and the induced in-plane and out-of-plane magnetic field. Experimentally the SR-generated in-plane and out-of-plane magnetization is confirmed by the k shift of the DC position and by the gap opening at the Dirac point even above the Curie temperature. Theoretical predictions and estimations of the measurable physical quantities substantiate the experimental results.

Original languageEnglish
Article number245407
JournalPhysical Review B
Volume97
Issue number24
DOIs
Publication statusPublished - 11 Jun 2018

Fingerprint

Synchrotron radiation
Magnetization
synchrotron radiation
signatures
insulators
Cones
magnetization
cones
Photoexcitation
photoexcitation
Photoelectron spectroscopy
Curie temperature
torque
Momentum
photoelectric emission
Torque
Photons
asymmetry
Magnetic fields
momentum

Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

@article{3a5bcb5d79f340a4baf7a170d404fa7b,
title = "Signatures of in-plane and out-of-plane magnetization generated by synchrotron radiation in magnetically doped and pristine topological insulators",
abstract = "Possibility of in-plane and out-of-plane magnetization generated by synchrotron radiation (SR) in magnetically doped and pristine topological insulators (TIs) is demonstrated and studied by angle-resolved photoemission spectroscopy. We show experimentally and by ab initio calculations how nonequal depopulation of the Dirac cone (DC) states with opposite momenta in V-doped and pristine TIs generated by linearly polarized SR leads to the hole-generated uncompensated spin accumulation followed by the SR-induced magnetization via spin-torque effect. Moreover, the photoexcitation of the DC is asymmetric, and it varies with the photon energy. We find a relation between the photoexcitation asymmetry, the generated spin accumulation, and the induced in-plane and out-of-plane magnetic field. Experimentally the SR-generated in-plane and out-of-plane magnetization is confirmed by the k shift of the DC position and by the gap opening at the Dirac point even above the Curie temperature. Theoretical predictions and estimations of the measurable physical quantities substantiate the experimental results.",
author = "Shikin, {A. M.} and Rybkina, {A. A.} and Estiunin, {D. A.} and Sostina, {D. M.} and Voroshnin, {V. Yu} and Klimovskikh, {I. I.} and Rybkin, {A. G.} and Surnin, {Yu A.} and Kokh, {K. A.} and Tereshchenko, {O. E.} and L. Petaccia and {Di Santo}, G. and Skirdkov, {P. N.} and Zvezdin, {A. K.} and Zvezdin, {A. K.} and A. Kimura and Chulkov, {E. V.} and Krasovskii, {E. E.}",
year = "2018",
month = "6",
day = "11",
doi = "10.1103/PhysRevB.97.245407",
language = "English",
volume = "97",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "24",

}

Signatures of in-plane and out-of-plane magnetization generated by synchrotron radiation in magnetically doped and pristine topological insulators. / Shikin, A. M.; Rybkina, A. A.; Estiunin, D. A.; Sostina, D. M.; Voroshnin, V. Yu; Klimovskikh, I. I.; Rybkin, A. G.; Surnin, Yu A.; Kokh, K. A.; Tereshchenko, O. E.; Petaccia, L.; Di Santo, G.; Skirdkov, P. N.; Zvezdin, A. K.; Zvezdin, A. K.; Kimura, A.; Chulkov, E. V.; Krasovskii, E. E.

In: Physical Review B, Vol. 97, No. 24, 245407, 11.06.2018.

Research output

TY - JOUR

T1 - Signatures of in-plane and out-of-plane magnetization generated by synchrotron radiation in magnetically doped and pristine topological insulators

AU - Shikin, A. M.

AU - Rybkina, A. A.

AU - Estiunin, D. A.

AU - Sostina, D. M.

AU - Voroshnin, V. Yu

AU - Klimovskikh, I. I.

AU - Rybkin, A. G.

AU - Surnin, Yu A.

AU - Kokh, K. A.

AU - Tereshchenko, O. E.

AU - Petaccia, L.

AU - Di Santo, G.

AU - Skirdkov, P. N.

AU - Zvezdin, A. K.

AU - Zvezdin, A. K.

AU - Kimura, A.

AU - Chulkov, E. V.

AU - Krasovskii, E. E.

PY - 2018/6/11

Y1 - 2018/6/11

N2 - Possibility of in-plane and out-of-plane magnetization generated by synchrotron radiation (SR) in magnetically doped and pristine topological insulators (TIs) is demonstrated and studied by angle-resolved photoemission spectroscopy. We show experimentally and by ab initio calculations how nonequal depopulation of the Dirac cone (DC) states with opposite momenta in V-doped and pristine TIs generated by linearly polarized SR leads to the hole-generated uncompensated spin accumulation followed by the SR-induced magnetization via spin-torque effect. Moreover, the photoexcitation of the DC is asymmetric, and it varies with the photon energy. We find a relation between the photoexcitation asymmetry, the generated spin accumulation, and the induced in-plane and out-of-plane magnetic field. Experimentally the SR-generated in-plane and out-of-plane magnetization is confirmed by the k shift of the DC position and by the gap opening at the Dirac point even above the Curie temperature. Theoretical predictions and estimations of the measurable physical quantities substantiate the experimental results.

AB - Possibility of in-plane and out-of-plane magnetization generated by synchrotron radiation (SR) in magnetically doped and pristine topological insulators (TIs) is demonstrated and studied by angle-resolved photoemission spectroscopy. We show experimentally and by ab initio calculations how nonequal depopulation of the Dirac cone (DC) states with opposite momenta in V-doped and pristine TIs generated by linearly polarized SR leads to the hole-generated uncompensated spin accumulation followed by the SR-induced magnetization via spin-torque effect. Moreover, the photoexcitation of the DC is asymmetric, and it varies with the photon energy. We find a relation between the photoexcitation asymmetry, the generated spin accumulation, and the induced in-plane and out-of-plane magnetic field. Experimentally the SR-generated in-plane and out-of-plane magnetization is confirmed by the k shift of the DC position and by the gap opening at the Dirac point even above the Curie temperature. Theoretical predictions and estimations of the measurable physical quantities substantiate the experimental results.

UR - http://www.scopus.com/inward/record.url?scp=85048456503&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.97.245407

DO - 10.1103/PhysRevB.97.245407

M3 - Article

AN - SCOPUS:85048456503

VL - 97

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 24

M1 - 245407

ER -