Observation of magnetic monopoles in spin ice

Hiroaki Kadowaki; Naohiro Doi; Yuji Aoki; Yoshikazu Tabata; Taku J. Sato; Jeffrey W. Lynn; Kazuyuki Matsuhira; Zenji Hiroi

doi:10.1143/JPSJ.78.103706

Observation of magnetic monopoles in spin ice

Hiroaki Kadowaki, Naohiro Doi, Yuji Aoki, Yoshikazu Tabata, Taku J. Sato, Jeffrey W. Lynn, Kazuyuki Matsuhira, Zenji Hiroi

Research output: Contribution to journal › Article › peer-review

128 Citations (Scopus)

Abstract

Excitations from a strongly frustrated system, the kagomé ice state of the spin ice Dy₂Ti₂O₇ under magnetic fields along a [111] direction, have been studied. They are theoretically proposed to be regarded as magnetic monopoles. Neutron scattering measurements of spin correlations show that close to the critical point the monopoles are fluctuating between high- and low-density states, supporting that the magnetic Coulomb force acts between them. Specific heat measurements show that monopole-pair creation obeys an Arrhenius law, indicating that the density of monopoles can be controlled by temperature and magnetic field.

Original language	English
Article number	103706-1
Journal	journal of the physical society of japan
Volume	78
Issue number	10
DOIs	https://doi.org/10.1143/JPSJ.78.103706
Publication status	Published - 2009 Jan 1
Externally published	Yes

Keywords

Kagomé ice
Magnetic monopole
Neutron scattering
Specific heat
Spin ice

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1143/JPSJ.78.103706

Cite this

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title = "Observation of magnetic monopoles in spin ice",

abstract = "Excitations from a strongly frustrated system, the kagom{\'e} ice state of the spin ice Dy2Ti2O7 under magnetic fields along a [111] direction, have been studied. They are theoretically proposed to be regarded as magnetic monopoles. Neutron scattering measurements of spin correlations show that close to the critical point the monopoles are fluctuating between high- and low-density states, supporting that the magnetic Coulomb force acts between them. Specific heat measurements show that monopole-pair creation obeys an Arrhenius law, indicating that the density of monopoles can be controlled by temperature and magnetic field.",

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author = "Hiroaki Kadowaki and Naohiro Doi and Yuji Aoki and Yoshikazu Tabata and Sato, {Taku J.} and Lynn, {Jeffrey W.} and Kazuyuki Matsuhira and Zenji Hiroi",

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T1 - Observation of magnetic monopoles in spin ice

AU - Kadowaki, Hiroaki

AU - Doi, Naohiro

AU - Aoki, Yuji

AU - Tabata, Yoshikazu

AU - Sato, Taku J.

AU - Lynn, Jeffrey W.

AU - Matsuhira, Kazuyuki

AU - Hiroi, Zenji

PY - 2009/1/1

Y1 - 2009/1/1

N2 - Excitations from a strongly frustrated system, the kagomé ice state of the spin ice Dy2Ti2O7 under magnetic fields along a [111] direction, have been studied. They are theoretically proposed to be regarded as magnetic monopoles. Neutron scattering measurements of spin correlations show that close to the critical point the monopoles are fluctuating between high- and low-density states, supporting that the magnetic Coulomb force acts between them. Specific heat measurements show that monopole-pair creation obeys an Arrhenius law, indicating that the density of monopoles can be controlled by temperature and magnetic field.

AB - Excitations from a strongly frustrated system, the kagomé ice state of the spin ice Dy2Ti2O7 under magnetic fields along a [111] direction, have been studied. They are theoretically proposed to be regarded as magnetic monopoles. Neutron scattering measurements of spin correlations show that close to the critical point the monopoles are fluctuating between high- and low-density states, supporting that the magnetic Coulomb force acts between them. Specific heat measurements show that monopole-pair creation obeys an Arrhenius law, indicating that the density of monopoles can be controlled by temperature and magnetic field.

KW - Kagomé ice

KW - Magnetic monopole

KW - Neutron scattering

KW - Specific heat

KW - Spin ice

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Observation of magnetic monopoles in spin ice

Abstract

Keywords

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