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Magnetic order in the S=1/2 two-dimensional molecular antiferromagnet copper pyrazine perchlorate Cu(Pz)2(ClO4)2

Abstract:

We present an investigation of magnetic ordering in the two-dimensional S=1/2 quantum magnet Cu(Pz)2(ClO4)2 using specific heat and zero-field muon-spin relaxation (μ+SR). The magnetic contribution to the specific heat is consistent with an exchange strength of 17.7(3) K. We find unambiguous evidence for a transition to a state of three-dimensional long-range order below a critical temperature TN=4.21(1) K using μ+SR even though there is no feature in the specific heat at that temperature. Th...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Publisher's version

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Publisher copy:
10.1103/PhysRevB.75.094421

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Institution:
University of Oxford
Department:
Mathematical,Physical & Life Sciences Division - Physics
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Institution:
University of Oxford
Department:
Mathematical,Physical & Life Sciences Division - Physics
More by this author
Institution:
University of Oxford
Department:
Mathematical,Physical & Life Sciences Division - Physics
More by this author
Institution:
University of Oxford
Department:
Mathematical,Physical & Life Sciences Division - Physics
More by this author
Institution:
ISIS Facility, Rutherford Appleton Laboratory, Chilton, Oxfordshire, UK
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Funding agency for:
T. Lancaster
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Funding agency for:
F. A. Chaves
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Funding agency for:
F. A. Chaves
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Funding agency for:
F. A. Chaves
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Funding agency for:
S. Soriano
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Publisher:
American Physical Society Publisher's website
Journal:
Physical Review B Journal website
Volume:
75
Issue:
9
Pages:
Article: 094421
Publication date:
2007-03-05
DOI:
EISSN:
1550-235x
ISSN:
1098-0211
URN:
uuid:5ee1e0b3-8917-4bf1-b7cb-7012631b7f3a
Local pid:
ora:1412

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