Pressure-induced magnetism and hidden order in URu2Si2

P. Chandra; P. Coleman; J. A. Mydosh

doi:10.1016/S0921-4526(01)01502-2

Pressure-induced magnetism and hidden order in URu₂Si₂

P. Chandra, P. Coleman, J. A. Mydosh

New High Energy Theory Center

Research output: Contribution to journal › Conference article › peer-review

24 Scopus citations

Abstract

We discuss the discovery of pressure-induced antiferromagnetism in URu²Si², in the context of neutron, NMR and μSR results. The identification of a critical pressure separating mean-field and Ising phase transitions leads us to propose that the system lies close to a bicritical point associated with magnetic and (non-magnetic) hidden order. We note that the recent observation of an isotropic, field-independent component in the silicon NMR line-width implies that the hidden order parameter breaks time-reversal invariance. Relying on simple estimates for the observed local fields, we conclude that URu²Si² is a strong candidate for an incommensurate orbital antiferromagnet.

Original language	English (US)
Pages (from-to)	397-400
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	312-313
DOIs	https://doi.org/10.1016/S0921-4526(01)01502-2
State	Published - Mar 2002
Event	International Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States Duration: Aug 6 2002 → Aug 6 2002

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

Keywords

Antiferromagnetism
Hidden order
URuSi

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10.1016/S0921-4526(01)01502-2

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title = "Pressure-induced magnetism and hidden order in URu2Si2",

abstract = "We discuss the discovery of pressure-induced antiferromagnetism in URu2Si2, in the context of neutron, NMR and μSR results. The identification of a critical pressure separating mean-field and Ising phase transitions leads us to propose that the system lies close to a bicritical point associated with magnetic and (non-magnetic) hidden order. We note that the recent observation of an isotropic, field-independent component in the silicon NMR line-width implies that the hidden order parameter breaks time-reversal invariance. Relying on simple estimates for the observed local fields, we conclude that URu2Si2 is a strong candidate for an incommensurate orbital antiferromagnet.",

keywords = "Antiferromagnetism, Hidden order, URuSi",

author = "P. Chandra and P. Coleman and Mydosh, {J. A.}",

note = "Funding Information: We acknowledge discussions with G. Aeppli, O. Bernal, S. Chakravarty, G. Lonzarich and D. Morr. Part of this work was performed at the Aspen Center for Physics (P.C. and P.C.) and at Los Alamos National Laboratory (J.A.M). This project is supported under grant NSF-DMR 9983156 (Coleman).; International Conference on Strongly Correlated Electrons ; Conference date: 06-08-2002 Through 06-08-2002",

year = "2002",

month = mar,

doi = "10.1016/S0921-4526(01)01502-2",

language = "English (US)",

volume = "312-313",

pages = "397--400",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier",

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TY - JOUR

T1 - Pressure-induced magnetism and hidden order in URu2Si2

AU - Chandra, P.

AU - Coleman, P.

AU - Mydosh, J. A.

N1 - Funding Information: We acknowledge discussions with G. Aeppli, O. Bernal, S. Chakravarty, G. Lonzarich and D. Morr. Part of this work was performed at the Aspen Center for Physics (P.C. and P.C.) and at Los Alamos National Laboratory (J.A.M). This project is supported under grant NSF-DMR 9983156 (Coleman).

PY - 2002/3

Y1 - 2002/3

N2 - We discuss the discovery of pressure-induced antiferromagnetism in URu2Si2, in the context of neutron, NMR and μSR results. The identification of a critical pressure separating mean-field and Ising phase transitions leads us to propose that the system lies close to a bicritical point associated with magnetic and (non-magnetic) hidden order. We note that the recent observation of an isotropic, field-independent component in the silicon NMR line-width implies that the hidden order parameter breaks time-reversal invariance. Relying on simple estimates for the observed local fields, we conclude that URu2Si2 is a strong candidate for an incommensurate orbital antiferromagnet.

AB - We discuss the discovery of pressure-induced antiferromagnetism in URu2Si2, in the context of neutron, NMR and μSR results. The identification of a critical pressure separating mean-field and Ising phase transitions leads us to propose that the system lies close to a bicritical point associated with magnetic and (non-magnetic) hidden order. We note that the recent observation of an isotropic, field-independent component in the silicon NMR line-width implies that the hidden order parameter breaks time-reversal invariance. Relying on simple estimates for the observed local fields, we conclude that URu2Si2 is a strong candidate for an incommensurate orbital antiferromagnet.

KW - Antiferromagnetism

KW - Hidden order

KW - URuSi

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DO - 10.1016/S0921-4526(01)01502-2

M3 - Conference article

AN - SCOPUS:19244372746

VL - 312-313

SP - 397

EP - 400

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

T2 - International Conference on Strongly Correlated Electrons

Y2 - 6 August 2002 through 6 August 2002

ER -