TY  - INPR
A1  - Yang, Bowen
A1  - Goh, Yin Min
A1  - Sung, Suk Hyun
A1  - Ye, Gaihua
A1  - Biswas, Sananda
A1  - Kaib, David A. S.
A1  - Dhakal, Ramesh
A1  - Yan, Shaohua
A1  - Li, Chenghe
A1  - Jiang, Shengwei
A1  - Chen, Fangchu
A1  - Lei, Hechang
A1  - He, Rui
A1  - Valentí, Roser
A1  - Winter, Stephen M.
A1  - Hovden, Robert
A1  - Tsen, Adam W.
T1  - Magnetic anisotropy reversal driven by structural symmetry-breaking in monolayer α-RuCl3
T2  - arXiv
N2  - Layered {\alpha}-RuCl3 is a promising material to potentially realize the long-sought Kitaev quantum spin liquid with fractionalized excitations. While evidence of this exotic state has been reported under a modest in-plane magnetic field, such behavior is largely inconsistent with theoretical expectations of Kitaev phases emerging only in out-of-plane fields. These predicted field-induced states have been mostly out of reach due to the strong easy-plane anisotropy of bulk crystals, however. We use a combination of tunneling spectroscopy, magnetotransport, electron diffraction, and ab initio calculations to study the layer-dependent magnons, anisotropy, structure, and exchange coupling in atomically thin samples. Due to structural distortions, the sign of the average off-diagonal exchange changes in monolayer {\alpha}-RuCl3, leading to a reversal of magnetic anisotropy to easy-axis. Our work provides a new avenue to tune the magnetic interactions in {\alpha}-RuCl3 and allows theoretically predicted quantum spin liquid phases for out-of-plane fields to be more experimentally accessible.
Y1  - 2022
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/82456
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-824562
UR  - https://arxiv.org/abs/2210.05733v1
IS  - 2210.05733 Version 1
PB  - arXiv
ER  -