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Title: Possible spin singlet quadrumerization in Pb(2)Re(2)O(7-δ).
Authors: Michioka, C  kyouindb  KAKEN_id
Kataoka, Y
Ohta, H
Yoshimura, K  kyouindb  KAKEN_id
Author's alias: 道岡, 千城
Issue Date: 9-Nov-2011
Publisher: IOP Publishing
Journal title: Journal of physics. Condensed matter
Volume: 23
Issue: 44
Thesis number: 445602
Abstract: A single crystal of pyrochlore Pb(2)Re(2)O(6.75) was prepared by hydrothermal synthesis, and its magnetic and transport properties were investigated. Pb(2)Re(2)O(6.75) shows the metallic conduction with an anomalous second-order structural phase transition at T(s)=294 K, in which the magnetization and the structure change similarly to that at 200 K of the superconductor Cd(2)Re(2)O(7). A three-dimensional Ising-like order parameter probed by the atomic displacement suggests that an unconventional spin singlet state is possibly realized in the ground state of Pb(2)Re(2)O(6.75), in which four spins make a quadrumer in order to remove the spin frustration of the pyrochlore lattice.
Rights: © IOP Publishing 2011
This is not the published version. Please cite only the published version. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。
DOI(Published Version): 10.1088/0953-8984/23/44/445602
PubMed ID: 22005040
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