Spin waves in random spin chains

Xin Wan; Kun Yang; Chenggang Zhou; R. N. Bhatt

doi:10.1063/1.1541640

Spin waves in random spin chains

Xin Wan, Kun Yang, Chenggang Zhou, R. N. Bhatt

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

Abstract

Quantum spin-1/2 Heisenberg ferromagnetic chains with dilute random antiferromagnetic impurity bonds were studied with the modified spin-wave theory (MSW). It was found that the zero-staggered-magnetization constraint keeps the number of spin waves finite at both the high and low temperature limit. The results suggested that the two chemical potentials were equivalent to the two kinds of Lagrangian multipliers in the Schwinger-boson mean-field study of the ferrimagnetic chains.

Original language	English (US)
Pages (from-to)	7390-7392
Number of pages	3
Journal	Journal of Applied Physics
Volume	93
Issue number	10 2
DOIs	https://doi.org/10.1063/1.1541640
State	Published - May 15 2003

All Science Journal Classification (ASJC) codes

General Physics and Astronomy

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10.1063/1.1541640

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title = "Spin waves in random spin chains",

abstract = "Quantum spin-1/2 Heisenberg ferromagnetic chains with dilute random antiferromagnetic impurity bonds were studied with the modified spin-wave theory (MSW). It was found that the zero-staggered-magnetization constraint keeps the number of spin waves finite at both the high and low temperature limit. The results suggested that the two chemical potentials were equivalent to the two kinds of Lagrangian multipliers in the Schwinger-boson mean-field study of the ferrimagnetic chains.",

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AU - Wan, Xin

AU - Yang, Kun

AU - Zhou, Chenggang

AU - Bhatt, R. N.

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N2 - Quantum spin-1/2 Heisenberg ferromagnetic chains with dilute random antiferromagnetic impurity bonds were studied with the modified spin-wave theory (MSW). It was found that the zero-staggered-magnetization constraint keeps the number of spin waves finite at both the high and low temperature limit. The results suggested that the two chemical potentials were equivalent to the two kinds of Lagrangian multipliers in the Schwinger-boson mean-field study of the ferrimagnetic chains.

AB - Quantum spin-1/2 Heisenberg ferromagnetic chains with dilute random antiferromagnetic impurity bonds were studied with the modified spin-wave theory (MSW). It was found that the zero-staggered-magnetization constraint keeps the number of spin waves finite at both the high and low temperature limit. The results suggested that the two chemical potentials were equivalent to the two kinds of Lagrangian multipliers in the Schwinger-boson mean-field study of the ferrimagnetic chains.

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Spin waves in random spin chains

Abstract

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