Quantum spin glass in anisotropic dipolar systems

M. Schechter; P. C.E. Stamp; N. Laflorencie

doi:10.1088/0953-8984/19/14/145218

Quantum spin glass in anisotropic dipolar systems

M. Schechter, P. C.E. Stamp, N. Laflorencie

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

10 Scopus citations

Abstract

The spin-glass phase in the LiHo_xY_1-xF₄ compound is considered. At zero transverse field this system is well described by the classical Ising model. At finite transverse field deviations from the transverse field quantum Ising model are significant, and one must take properly into account the hyperfine interactions, the off-diagonal terms in the dipolar interactions, and details of the full J ≤ 8 spin Hamiltonian to obtain the correct physical picture. In particular, the system is not a spin glass at finite transverse fields and does not show quantum criticality.

Original language	English
Article number	145218
Journal	Journal of Physics Condensed Matter
Volume	19
Issue number	14
DOIs	https://doi.org/10.1088/0953-8984/19/14/145218
State	Published - 11 Apr 2007
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics

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title = "Quantum spin glass in anisotropic dipolar systems",

abstract = "The spin-glass phase in the LiHoxY1-xF4 compound is considered. At zero transverse field this system is well described by the classical Ising model. At finite transverse field deviations from the transverse field quantum Ising model are significant, and one must take properly into account the hyperfine interactions, the off-diagonal terms in the dipolar interactions, and details of the full J ≤ 8 spin Hamiltonian to obtain the correct physical picture. In particular, the system is not a spin glass at finite transverse fields and does not show quantum criticality.",

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N2 - The spin-glass phase in the LiHoxY1-xF4 compound is considered. At zero transverse field this system is well described by the classical Ising model. At finite transverse field deviations from the transverse field quantum Ising model are significant, and one must take properly into account the hyperfine interactions, the off-diagonal terms in the dipolar interactions, and details of the full J ≤ 8 spin Hamiltonian to obtain the correct physical picture. In particular, the system is not a spin glass at finite transverse fields and does not show quantum criticality.

AB - The spin-glass phase in the LiHoxY1-xF4 compound is considered. At zero transverse field this system is well described by the classical Ising model. At finite transverse field deviations from the transverse field quantum Ising model are significant, and one must take properly into account the hyperfine interactions, the off-diagonal terms in the dipolar interactions, and details of the full J ≤ 8 spin Hamiltonian to obtain the correct physical picture. In particular, the system is not a spin glass at finite transverse fields and does not show quantum criticality.

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Quantum spin glass in anisotropic dipolar systems

Abstract

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