Research output: Contribution to journal › Article › peer-review
Coexistence of magnetic states and metamagnetism in the Bi2-xCrxSe3 topological insulators. / Khachatryan, A.Sh.; Charnaya, E.V.; Shevchenko, E.V.; Likholetova, M.V.; Lee, Min Kai; Chang, L.J.; Naumov, S.V.; Domozhirova, A.N.; Marchenkov, V.V.
In: Europhysics Letters, Vol. 134, No. 4, 47002, 05.2021.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Coexistence of magnetic states and metamagnetism in the Bi2-xCrxSe3 topological insulators
AU - Khachatryan, A.Sh.
AU - Charnaya, E.V.
AU - Shevchenko, E.V.
AU - Likholetova, M.V.
AU - Lee, Min Kai
AU - Chang, L.J.
AU - Naumov, S.V.
AU - Domozhirova, A.N.
AU - Marchenkov, V.V.
N1 - Publisher Copyright: Copyright © 2021 EPLA.
PY - 2021/5
Y1 - 2021/5
N2 - The dichalcogenide Bi2Te3 and Bi2Se3 crystals belong to the 3D topological insulator family. Doping the crystals with magnetic ions can break the time-reversal symmetry and open an energy gap at surface Dirac points. This provides the opportunity of manipulating the surface transport and observing the anomalous quantum Hall effect. We studied magnetic properties of three single-crystalline Bi2-xCrxSe3 samples with x = 0.01, 0.03, and 0.06 within a temperature range from 2 to 300 K. The dc magnetization revealed the coexistence of antiferromagnetic and ferromagnetic ordering and paramagnetism. Their significance depends on the chromium content. The ferromagnetic phase transition was suppressed by high enough magnetic field. The antiferromagnetic transition near 80 K did not shift visibly up to 50 kOe. The Curie-Weiss law approximation gave the effective magnetic moment μ eff close to 4.9 μB, which corresponds to divalent chromium ions. Metamagnetic phenomena were found for crystals with x = 0.03 and 0.06.
AB - The dichalcogenide Bi2Te3 and Bi2Se3 crystals belong to the 3D topological insulator family. Doping the crystals with magnetic ions can break the time-reversal symmetry and open an energy gap at surface Dirac points. This provides the opportunity of manipulating the surface transport and observing the anomalous quantum Hall effect. We studied magnetic properties of three single-crystalline Bi2-xCrxSe3 samples with x = 0.01, 0.03, and 0.06 within a temperature range from 2 to 300 K. The dc magnetization revealed the coexistence of antiferromagnetic and ferromagnetic ordering and paramagnetism. Their significance depends on the chromium content. The ferromagnetic phase transition was suppressed by high enough magnetic field. The antiferromagnetic transition near 80 K did not shift visibly up to 50 kOe. The Curie-Weiss law approximation gave the effective magnetic moment μ eff close to 4.9 μB, which corresponds to divalent chromium ions. Metamagnetic phenomena were found for crystals with x = 0.03 and 0.06.
KW - SINGLE DIRAC CONE
KW - DOPED BI2SE3
KW - TRANSITION
UR - http://www.scopus.com/inward/record.url?scp=85112150435&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/3f9eb125-69e5-32d0-9ede-e3f08edda3d1/
U2 - 10.1209/0295-5075/134/47002
DO - 10.1209/0295-5075/134/47002
M3 - Article
VL - 134
JO - Lettere Al Nuovo Cimento
JF - Lettere Al Nuovo Cimento
SN - 0295-5075
IS - 4
M1 - 47002
ER -
ID: 88235758