Quantum Disordering of an Antiferromagnetic Order by Quenched Randomness in an Organic Mott Insulator

Mizuki Urai, Kazuya Miyagawa, Takahiko Sasaki, Hiromi Taniguchi, Kazushi Kanoda

Research output: Contribution to journalArticle

Abstract

The behavior of interacting spins subject to randomness is a longstanding issue and the emergence of exotic quantum states is among intriguing theoretical predictions. We show how a quantum-disordered phase emerges from a classical antiferromagnet by controlled randomness. H1 NMR of a successively x-ray-irradiated organic Mott insulator finds that the magnetic order collapses into a spin-glass-like state, immediately after a slight amount of disorder centers are created, and evolves to a gapless quantum-disordered state without spin freezing, spin gap, or critical slowing down, as reported by T. Furukawa et al. [Phys. Rev. Lett. 115, 077001 (2015)]PRLTAO0031-900710.1103/PhysRevLett.115.077001 through sequential reductions in the spin freezing temperature and moment.

Original languageEnglish
Article number117204
JournalPhysical review letters
Volume124
Issue number11
DOIs
Publication statusPublished - 2020 Mar 20

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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