Spin Liquid State and Topological Structural Defects in Hexagonal TbInO3

Jaewook Kim, Xueyun Wang, Fei Ting Huang, Yazhong Wang, Xiaochen Fang, Xuan Luo, Y. Li, Meixia Wu, S. Mori, D. Kwok, Eun Deok Mun, V. S. Zapf, Sang Wook Cheong

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

We report the coexistence of ferroelectricity and a spin liquid state in hexagonal TbInO3 with quasi-two-dimensional triangular spin lattice. Geometrical ferroelectricity associated with In trimerization accompanies topological ferroelectric structural defects. Magnetic susceptibility data show in-plane magnetic anisotropy of Tb spins without any long-range order above 1.8 K, and we also confirm no trace of any phase transition down to 0.15 K from a specific heat measurement, which indicates that this system is highly frustrated and may host a spin liquid ground state. By analyzing the Schottky anomaly in the specific heat results, we propose a model where crystal-field levels are different in each Tb sites, and only one of them has a magnetic ground state and forms a unique honeycomb spin lattice. These observations put forward an interesting possibility where spin liquid and ferroelectric behaviors coexist, and the atomically sharp ferroelectric domain walls may host new magnetic edge states or local spin excitations.
Original languageEnglish
JournalPhysical Review X
Volume9
Issue number3
DOIs
StatePublished - Jul 9 2019

Fingerprint

Dive into the research topics of 'Spin Liquid State and Topological Structural Defects in Hexagonal TbInO3'. Together they form a unique fingerprint.

Cite this