Dimensional Reduction in Quantum Dipolar Antiferromagnets

Publication: Research - peer-reviewJournal article – Annual report year: 2016

Without internal affiliation

DOI

  • Author: Babkevich, P.

    Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland

  • Author: Jeong, Min-Soo

    Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland

  • Author: Matsumoto, Y.

    University of Tokyo, Japan

  • Author: Kovacevic, I.

    Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland

  • Author: Finco, A.

    Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland

  • Author: Toft-Petersen, Rasmus

    Helmholtz–Zentrum Berlin für Materialien und Energie

  • Author: Ritter, Cathrin

    Institut Laue-Langevin, France

  • Author: Månsson, Maria

    Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland

  • Author: Nakatsuji, S.

    University of Tokyo, Japan

  • Author: Rønnow, H. M.

    Ecole Polytechnique Federale de Lausanne (EPFL), Switzerland

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We report ac susceptibility, specific heat, and neutron scattering measurements on a dipolar-coupled antiferromagnet LiYbF4. For the thermal transition, the order-parameter critical exponent is found to be 0.20(1) and the specific-heat critical exponent -0.25(1). The exponents agree with the 2D XY/h4 universality class despite the lack of apparent two-dimensionality in the structure. The order-parameter exponent for the quantum phase transitions is found to be 0.35(1) corresponding to (2 + 1)D. These results are in line with those found for LiErF4 which has the same crystal structure, but largely different TN, crystal field environment and hyperfine interactions. Our results therefore experimentally establish that the dimensional reduction is universal to quantum dipolar antiferromagnets on a distorted diamond lattice.
Original languageEnglish
Article number197202
JournalPhysical Review Letters
Volume116
Issue number19
Number of pages5
ISSN0031-9007
DOIs
StatePublished - 2016
Externally publishedYes

Bibliographical note

© 2016 American Physical Society

CitationsWeb of Science® Times Cited: 4
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