Energy surface and transition rates in a hexagonal element of spin ice

S. Y. Liashko; V. M. Uzdin; H. Jónsson

doi:10.1088/1742-6596/903/1/012006

Energy surface and transition rates in a hexagonal element of spin ice

S. Y. Liashko, V. M. Uzdin, H. Jónsson

Faculty of Physical Sciences

University of Iceland

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

Abstract

The energy surface of a hexagonal element of Kagome spin ice consisting of six prolate magnetic islands is investigated as a function of applied magnetic field. Minimum energy paths for magnetic reversals are determined to estimate energy barriers and the transition rates estimated using harmonic transition state theory for magnetic systems. The overall transition rate between equivalent ground states is calculated using the stationary state approximation including all possible transition paths. The calculated transition rates are in close agreement with reported experimental measurements taken in the absence of an applied field. Predictions are made for the change in the energy landscape and transition rates as a magnetic field is applied.

Original language	English
Article number	012006
Journal	Journal of Physics: Conference Series
Volume	903
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/903/1/012006
Publication status	Published - 28 Oct 2017
Event	8th Joint European Magnetic Symposia, JEMS 2016 - Glasgow, United Kingdom Duration: 21 Aug 2016 → 26 Aug 2016

Bibliographical note

Funding Information: This work was financially supported by Government of Russian Federation, Grant 074-U01, RFBR grant №14-02-00102 and the Icelandic Research Fund. Publisher Copyright: © 2016 Published under licence by IOP Publishing Ltd.

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10.1088/1742-6596/903/1/012006

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title = "Energy surface and transition rates in a hexagonal element of spin ice",

abstract = "The energy surface of a hexagonal element of Kagome spin ice consisting of six prolate magnetic islands is investigated as a function of applied magnetic field. Minimum energy paths for magnetic reversals are determined to estimate energy barriers and the transition rates estimated using harmonic transition state theory for magnetic systems. The overall transition rate between equivalent ground states is calculated using the stationary state approximation including all possible transition paths. The calculated transition rates are in close agreement with reported experimental measurements taken in the absence of an applied field. Predictions are made for the change in the energy landscape and transition rates as a magnetic field is applied.",

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T1 - Energy surface and transition rates in a hexagonal element of spin ice

AU - Liashko, S. Y.

AU - Uzdin, V. M.

AU - Jónsson, H.

N1 - Funding Information: This work was financially supported by Government of Russian Federation, Grant 074-U01, RFBR grant №14-02-00102 and the Icelandic Research Fund. Publisher Copyright: © 2016 Published under licence by IOP Publishing Ltd.

PY - 2017/10/28

Y1 - 2017/10/28

N2 - The energy surface of a hexagonal element of Kagome spin ice consisting of six prolate magnetic islands is investigated as a function of applied magnetic field. Minimum energy paths for magnetic reversals are determined to estimate energy barriers and the transition rates estimated using harmonic transition state theory for magnetic systems. The overall transition rate between equivalent ground states is calculated using the stationary state approximation including all possible transition paths. The calculated transition rates are in close agreement with reported experimental measurements taken in the absence of an applied field. Predictions are made for the change in the energy landscape and transition rates as a magnetic field is applied.

AB - The energy surface of a hexagonal element of Kagome spin ice consisting of six prolate magnetic islands is investigated as a function of applied magnetic field. Minimum energy paths for magnetic reversals are determined to estimate energy barriers and the transition rates estimated using harmonic transition state theory for magnetic systems. The overall transition rate between equivalent ground states is calculated using the stationary state approximation including all possible transition paths. The calculated transition rates are in close agreement with reported experimental measurements taken in the absence of an applied field. Predictions are made for the change in the energy landscape and transition rates as a magnetic field is applied.

UR - https://www.scopus.com/pages/publications/85034272276

U2 - 10.1088/1742-6596/903/1/012006

DO - 10.1088/1742-6596/903/1/012006

M3 - Conference article

SN - 1742-6588

VL - 903

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012006

T2 - 8th Joint European Magnetic Symposia, JEMS 2016

Y2 - 21 August 2016 through 26 August 2016

ER -

Energy surface and transition rates in a hexagonal element of spin ice

Abstract

Bibliographical note

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