Spin Vortex Crystal Order in Organic Triangular Lattice Compound

Kira Riedl, Elena Gati, David Zielke, Steffi Hartmann, Oleg M. Vyaselev, Nataliya D. Kushch, Harald O. Jeschke, Michael Lang, Roser Valentí, Mark V. Kartsovnik, Stephen M. Winter

Research output: Contribution to journalArticlepeer-review

Abstract

Organic salts represent an ideal experimental playground for studying the interplay between magnetic and charge degrees of freedom, which has culminated in the discovery of several spin-liquid candidates such as (). Recent theoretical studies indicate the possibility of chiral spin liquids stabilized by ring exchange, but the parent states with chiral magnetic order have not been observed in this material family. In this Letter, we discuss the properties of the recently synthesized (). Based on analysis of specific heat, magnetic torque, and NMR measurements combined with ab initio calculations, we identify a spin-vortex crystal order. These observations definitively confirm the importance of ring exchange in these materials and support the proposed chiral spin-liquid scenario for triangular lattice organics.

Original languageEnglish
Article number147204
JournalPhysical Review Letters
Volume127
Issue number14
DOIs
Publication statusPublished - Oct 1 2021

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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