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Phase Transition in Metallic Spin Glasses

Chakrabarti, Amitabha / Dasgupta, Chandan

Abstract Monte Carlo simulations are used to study the critical behavior of the classical Ruderman-Kittel-Kasuya-Yosida (RKKY) model of metallic spin glass both with and without the presence of weak Dzyaloshinskii-Moriya (DM) anisotropy. Finite-size scaling analyses of the data for equilibrium averages and relaxation times indicate a zero-temperature critical point for the isotropic RKKY model. When the DM interaction is included, the model exhibits a phase transition at a non-zero temperature. The values of the critical exponents at this transition are close to those obtained for the three-dimensional short-range Ising spin glass and in experiments on CuMn.

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Phase Transition in Metallic Spin Glasses

Chakrabarti, Amitabha / Dasgupta, Chandan

Abstract Monte Carlo simulations are used to study the critical behavior of the classical Ruderman-Kittel-Kasuya-Yosida (RKKY) model of metallic spin glass both with and without the presence of weak Dzyaloshinskii-Moriya (DM) anisotropy. Finite-size scaling analyses of the data for equilibrium averages and relaxation times indicate a zero-temperature critical point for the isotropic RKKY model. When the DM interaction is included, the model exhibits a phase transition at a non-zero temperature. The values of the critical exponents at this transition are close to those obtained for the three-dimensional short-range Ising spin glass and in experiments on CuMn.

Phase Transition in Metallic Spin Glasses

Chakrabarti, Amitabha / Dasgupta, Chandan

Abstract Monte Carlo simulations are used to study the critical behavior of the classical Ruderman-Kittel-Kasuya-Yosida (RKKY) model of metallic spin glass both with and without the presence of weak Dzyaloshinskii-Moriya (DM) anisotropy. Finite-size scaling analyses of the data for equilibrium averages and relaxation times indicate a zero-temperature critical point for the isotropic RKKY model. When the DM interaction is included, the model exhibits a phase transition at a non-zero temperature. The values of the critical exponents at this transition are close to those obtained for the three-dimensional short-range Ising spin glass and in experiments on CuMn.

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Title:

Phase Transition in Metallic Spin Glasses

Contributors:

Chakrabarti, Amitabha (author) / Dasgupta, Chandan (author)

Published in:

Condensed Matter Theories ; 9-18

Publication date:

1987-01-01

Size:

10 pages

ISBN:

978-1-4613-0917-8 , 978-1-4612-8244-0

DOI:

https://doi.org/10.1007/978-1-4613-0917-8_2

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Spin Glass , Continuous Phase Transition , Uniform Rotation , Spin Glass Phase , Ising Spin Glass Physics , Condensed Matter Physics , Characterization and Evaluation of Materials

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