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Linear temperature term of heat capacity in insulating and superconducting La-Ba-Cu-O systems

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Title: Linear temperature term of heat capacity in insulating and superconducting La-Ba-Cu-O systems
Authors: Kumagai, K.1 Browse this author →KAKEN DB
Nakamichi, Y. Browse this author
Watanabe, I. Browse this author
Nakamura, Y. Browse this author
Nakajima, H. Browse this author
Wada, N. Browse this author
Lederer, P. Browse this author
Authors(alt): 熊谷, 健一1
Issue Date: Feb-1988
Publisher: American Physical Society
Journal Title: PHYSICAL REVIEW LETTERS
Volume: 60
Issue: 8
Start Page: 724
End Page: 727
Publisher DOI: 10.1103/PhysRevLett.60.724
Abstract: The heat capacity of La2-xBaxCuO4 was investigated between 0.8 and 10 K. The linear temperature term γT of the heat capacity is absent in the antiferromagnetic-ordered region of x≤0.02. γ increases abruptly from x=0.02 to x=0.04 where the system is still insulating at low temperature, and seems to saturate at the order of 5 mJ/mol K2 in the superconducting region of x≥0.05. The correlation between magnetic order and vanishing γT term and the existence of a finite γT term for Ba doping give support to the resonating-valence-bond picture.
Rights: Copyright © 1988 American Physical Society
Relation: http://www.aps.org/
Type: article
URI: http://hdl.handle.net/2115/5894
Appears in Collections:理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 熊谷 健一

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