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Linear temperature term of heat capacity in insulating and superconducting La-Ba-Cu-O systems
| 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)
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Submitter: 熊谷 健一
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