Ordering due to quantum fluctuations in Sr2Cu3O4Cl2

Y. J. Kim; A. Aharony; R. J. Birgeneau; F. C. Chou; O. Entin-Wohlman; R. W. Erwin; M. Greven; A. B. Harris; M. A. Kastner; I. Ya Korenblit; Y. S. Lee; G. Shirane

doi:10.1103/PhysRevLett.83.852

Ordering due to quantum fluctuations in Sr₂Cu₃O₄C_l2

Y. J. Kim
, A. Aharony
, R. J. Birgeneau
, F. C. Chou
, O. Entin-Wohlman
, R. W. Erwin
, M. Greven
, A. B. Harris
, M. A. Kastner
, I. Ya Korenblit
, Y. S. Lee
, G. Shirane

School of Physics and Astronomy

Massachusetts Institute of Technology
Harvard University
National Institute of Standards and Technology
Stanford University
University of Pennsylvania
Tel Aviv University
Brookhaven National Laboratory

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

68 Scopus citations

Abstract

Sr₂Cu₃O₄C_l2 has Cu_I and Cu_II subsystems, forming interpenetrating S=1/2 square lattice Heisenberg antiferromagnets. The classical ground state is degenerate, due to frustration of the intersubsystem interactions. Magnetic neutron scattering experiments show that quantum fluctuations cause a two dimensional Ising ordering of the Cu_II’s, lifting the degeneracy, and a dramatic increase of the Cu_I out-of-plane spin-wave gap, unique for order out of disorder. The spin-wave energies are quantitatively predicted by calculations which include quantum fluctuations.

Original language	English
Pages (from-to)	852-855
Number of pages	4
Journal	Physical Review Letters
Volume	83
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevLett.83.852
State	Published - 1 Jan 1999

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10.1103/PhysRevLett.83.852

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title = "Ordering due to quantum fluctuations in Sr2Cu3O4Cl2",

abstract = "Sr2Cu3O4Cl2 has CuI and CuII subsystems, forming interpenetrating S=1/2 square lattice Heisenberg antiferromagnets. The classical ground state is degenerate, due to frustration of the intersubsystem interactions. Magnetic neutron scattering experiments show that quantum fluctuations cause a two dimensional Ising ordering of the CuII{\textquoteright}s, lifting the degeneracy, and a dramatic increase of the CuI out-of-plane spin-wave gap, unique for order out of disorder. The spin-wave energies are quantitatively predicted by calculations which include quantum fluctuations.",

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T1 - Ordering due to quantum fluctuations in Sr2Cu3O4Cl2

AU - Kim, Y. J.

AU - Aharony, A.

AU - Birgeneau, R. J.

AU - Chou, F. C.

AU - Entin-Wohlman, O.

AU - Erwin, R. W.

AU - Greven, M.

AU - Harris, A. B.

AU - Kastner, M. A.

AU - Korenblit, I. Ya

AU - Lee, Y. S.

AU - Shirane, G.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - Sr2Cu3O4Cl2 has CuI and CuII subsystems, forming interpenetrating S=1/2 square lattice Heisenberg antiferromagnets. The classical ground state is degenerate, due to frustration of the intersubsystem interactions. Magnetic neutron scattering experiments show that quantum fluctuations cause a two dimensional Ising ordering of the CuII’s, lifting the degeneracy, and a dramatic increase of the CuI out-of-plane spin-wave gap, unique for order out of disorder. The spin-wave energies are quantitatively predicted by calculations which include quantum fluctuations.

AB - Sr2Cu3O4Cl2 has CuI and CuII subsystems, forming interpenetrating S=1/2 square lattice Heisenberg antiferromagnets. The classical ground state is degenerate, due to frustration of the intersubsystem interactions. Magnetic neutron scattering experiments show that quantum fluctuations cause a two dimensional Ising ordering of the CuII’s, lifting the degeneracy, and a dramatic increase of the CuI out-of-plane spin-wave gap, unique for order out of disorder. The spin-wave energies are quantitatively predicted by calculations which include quantum fluctuations.

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SP - 852

EP - 855

JO - Physical Review Letters

JF - Physical Review Letters

IS - 4

ER -

Ordering due to quantum fluctuations in Sr₂Cu₃O₄C_l2

Abstract

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