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Title: Many-body localization from random magnetic anisotropy

Journal Article · · Physical Review Research

One of the main difficulties of observing many-body localization in natural solid-state materials is creating strong enough disorder. A strong random local magnetic field is difficult to achieve in a solid state material. We propose exploiting large random magnetic anisotropy, either in magnitude or direction, which can be realized in organometallic quantum magnets. We present the phase diagram of an S = 1 Heisenberg chain in terms of both a random magnetic anisotropy and a random magnetic field. The many-body localization phase emerges with sufficiently large anisotropy under very small random fields. We propose candidate materials of doped single-chain organometallic quantum magnets for realizing many-body localization, where either orientation disorder or substitution of metal ions can create large random magnetic anisotropy required in our prediction.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Molecular Magnetic Quantum Materials (M2QM); Univ. of Florida, Gainesville, FL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019330; FG02-02ER45995
OSTI ID:
1579780
Alternate ID(s):
OSTI ID: 1601991
Journal Information:
Physical Review Research, Vol. 1, Issue 3; ISSN 2643-1564
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

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Single-Molecule Magnets
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  • Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol. 343, Issue 1 https://doi.org/10.1080/10587250008023497
journal May 2000
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Diagonalization and Many-Body Localization for a Disordered Quantum Spin Chain text January 2016
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Shift-invert diagonalization of large many-body localizing spin chains text January 2018
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Localization of interacting fermions at high temperature text January 2006
Chaos and Quantum Thermalization text January 1994
Will spin-relaxation times in molecular magnets permit quantum information processing? text January 2006

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