Coexistence of magnetic states and metamagnetism in the Bi2-x CrxSe3topological insulators

A. Sh. Khachatryan; E. V. Charnaya; E. V. Shevchenko; M. V. Likholetova; M. K. Lee; L. J. Chang; S. V. Naumov; A. N. Domozhirova; V. V. Marchenkov

doi:10.1209/0295-5075/134/47002

All issues

Volume 134 / No 4 (June 2021)

EPL, 134 4 (2021) 47002

Abstract

Issue		EPL Volume 134, Number 4, June 2021


Article Number		47002
Number of page(s)		6
Section		Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties
DOI		https://doi.org/10.1209/0295-5075/134/47002
Published online		26 July 2021

EPL, 134 (2021) 47002

Coexistence of magnetic states and metamagnetism in the Bi_2-x Cr_xSe₃topological insulators

A. Sh. Khachatryan¹^(a), E. V. Charnaya¹, E. V. Shevchenko¹, M. V. Likholetova¹, M. K. Lee², L. J. Chang², S. V. Naumov³, A. N. Domozhirova³ and V. V. Marchenkov³^,4

¹ St. Petersburg State University - St. Petersburg, 198504, Russia
² National Cheng Kung University - Tainan, 70101, Taiwan
³ M.N. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences Yekaterinburg, 620108, Russia
⁴ Ural Federal University - Yekaterinburg, 620002, Russia

^(a) maizr@yandex.ru (corresponding author)

Received: 31 December 2020
Accepted: 6 April 2021

Abstract

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 Bi $_{2-x}$ Cr_xSe₃ 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 $\mu_{\textit{eff}}$ close to $4.9\;{\mu_{B}}$ , which corresponds to divalent chromium ions. Metamagnetic phenomena were found for crystals with $x=0.03$ and 0.06.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.