Theory of magneto-elastic properties of interacting multipoles

N. Fukushima; T. Kuromaru; H. Kusunose; Y. Kuramoto

doi:10.1016/S0921-4526(99)00886-8

Theory of magneto-elastic properties of interacting multipoles

N. Fukushima, T. Kuromaru, H. Kusunose, Y. Kuramoto

SCI - Physics

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

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Abstract

Anomalous magneto-elastic property of interacting multipoles is investigated with account of fluctuation effects. We use two complementary methods both of which deal with fluctuation effects beyond the mean-field theory. One is to take the two-site model which has a multipolar coupling between them and to solve the model exactly. The other approach is to take the effective medium theory for the lattice system. It takes into account fluctuations up to O(1/z_n) around the mean-field theory where z_n is the number of interacting neighbors. In the latter approach, it is found that some components of the local strain susceptibility increase as the fluctuation is suppressed by a magnetic field. This leads to increase of corresponding uniform strain susceptibility, and softening of the corresponding elastic constant.

Original language	English
Pages (from-to)	538-539
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	281-282
DOIs	https://doi.org/10.1016/S0921-4526(99)00886-8
Publication status	Published - 2000 Jun 1
Event	Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) - Nagano, Jpn Duration: 1999 Aug 24 → 1999 Aug 28

ASJC Scopus subject areas

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

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10.1016/S0921-4526(99)00886-8

Cite this

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title = "Theory of magneto-elastic properties of interacting multipoles",

abstract = "Anomalous magneto-elastic property of interacting multipoles is investigated with account of fluctuation effects. We use two complementary methods both of which deal with fluctuation effects beyond the mean-field theory. One is to take the two-site model which has a multipolar coupling between them and to solve the model exactly. The other approach is to take the effective medium theory for the lattice system. It takes into account fluctuations up to O(1/zn) around the mean-field theory where zn is the number of interacting neighbors. In the latter approach, it is found that some components of the local strain susceptibility increase as the fluctuation is suppressed by a magnetic field. This leads to increase of corresponding uniform strain susceptibility, and softening of the corresponding elastic constant.",

author = "N. Fukushima and T. Kuromaru and H. Kusunose and Y. Kuramoto",

note = "Funding Information: N.F. acknowledges the support of the Japan Society for the Promotion of Science. ; Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99) ; Conference date: 24-08-1999 Through 28-08-1999",

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doi = "10.1016/S0921-4526(99)00886-8",

language = "English",

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pages = "538--539",

journal = "Physica B: Condensed Matter",

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TY - JOUR

T1 - Theory of magneto-elastic properties of interacting multipoles

AU - Fukushima, N.

AU - Kuromaru, T.

AU - Kusunose, H.

AU - Kuramoto, Y.

N1 - Funding Information: N.F. acknowledges the support of the Japan Society for the Promotion of Science.

PY - 2000/6/1

Y1 - 2000/6/1

N2 - Anomalous magneto-elastic property of interacting multipoles is investigated with account of fluctuation effects. We use two complementary methods both of which deal with fluctuation effects beyond the mean-field theory. One is to take the two-site model which has a multipolar coupling between them and to solve the model exactly. The other approach is to take the effective medium theory for the lattice system. It takes into account fluctuations up to O(1/zn) around the mean-field theory where zn is the number of interacting neighbors. In the latter approach, it is found that some components of the local strain susceptibility increase as the fluctuation is suppressed by a magnetic field. This leads to increase of corresponding uniform strain susceptibility, and softening of the corresponding elastic constant.

AB - Anomalous magneto-elastic property of interacting multipoles is investigated with account of fluctuation effects. We use two complementary methods both of which deal with fluctuation effects beyond the mean-field theory. One is to take the two-site model which has a multipolar coupling between them and to solve the model exactly. The other approach is to take the effective medium theory for the lattice system. It takes into account fluctuations up to O(1/zn) around the mean-field theory where zn is the number of interacting neighbors. In the latter approach, it is found that some components of the local strain susceptibility increase as the fluctuation is suppressed by a magnetic field. This leads to increase of corresponding uniform strain susceptibility, and softening of the corresponding elastic constant.

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U2 - 10.1016/S0921-4526(99)00886-8

DO - 10.1016/S0921-4526(99)00886-8

M3 - Conference article

AN - SCOPUS:0033901073

VL - 281-282

SP - 538

EP - 539

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

SN - 0921-4526

T2 - Yamada Conference LI - The International Conference on Strongly Correlated Electron Systems (SCES '99)

Y2 - 24 August 1999 through 28 August 1999

ER -

Theory of magneto-elastic properties of interacting multipoles

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