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セガワ コウジ
SEGAWA KOJI
瀬川 耕司 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2005/09 |
| 形態種別 | 研究論文 |
| 標題 | Low-temperature nodal-quasiparticle transport in lightly doped YBa2Cu3Oy near the edge of the superconducting doping regime |
| 執筆形態 | その他 |
| 掲載誌名 | PHYSICAL REVIEW B |
| 出版社・発行元 | AMER PHYSICAL SOC |
| 巻・号・頁 | 72(10) |
| 著者・共著者 | XF Sun,K Segawa,Y Ando |
| 概要 | In-plane transport properties of nonsuperconducting YBa2Cu3Oy (y=6.35) are measured using high-quality untwinned single crystals. We find that both the a- and b-axis resistivities show ln(1/T) divergence down to 80 mK, and accordingly the thermal conductivity data indicate that the nodal quasiparticles are progressively localized with lowering temperature. Hence, both the charge and heat transport data do not support the existence of a "thermal metal" in nonsuperconducting YBa2Cu3Oy, as opposed to a recent report by Sutherland [Phys. Rev. Lett. 94, 147004 (2005)]. Besides, the present data demonstrate that the peculiar ln(1/T) resistivity divergence of cuprate is not a property associated with high magnetic fields. |
| DOI | 10.1103/PhysRevB.72.100502 |
| ISSN | 1098-0121 |
| PermalinkURL | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=29644437753&origin=inward |