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Title: Low-temperature thermal conductivity of antiferromagnetic S = 1/2 chain material CuCl{sub 2}·2((CH{sub 3}){sub 2}SO)

We study the heat transport of S = 1/2 chain compound CuCl{sub 2}·2((CH{sub 3}){sub 2}SO) along the b axis (vertical to the chain direction) at very low temperatures. The zero-field thermal conductivity (κ) shows a distinct kink at about 0.9 K, which is related to the long-range antiferromagnetic (AF) transition. With applying magnetic field along the c axis, κ(H) curves also show distinct changes at the phase boundaries between the AF and the high-field disordered states. These results indicate a strong spin-phonon interaction and the magnetic excitations play a role in the b-axis heat transport as phonon scatterers.
Authors:
; ; ; ;  [1] ;  [2] ;  [3]
  1. Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  2. Department of Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  3. School of Physical Sciences, University of Science and Technology of China, Hefei, Anhui 230026 (China)
Publication Date:
OSTI Identifier:
22273935
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETIC MATERIALS; ANTIFERROMAGNETISM; DMSO; ELECTRON-PHONON COUPLING; EXCITATION; HEAT TRANSFER; MAGNETIC FIELDS; PHONONS; SPIN; TEMPERATURE DEPENDENCE; THERMAL CONDUCTIVITY