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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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| 発行・発表の年月 | 1999/01/01 |
| 形態種別 | 研究論文 |
| 標題 | Magnetoresistance in heavily underdoped YBa<inf>2</inf>Cu<inf>3</inf>O<inf>(6+x)</inf>: Antiferromagnetic correlations and normal-state transport |
| 執筆形態 | その他 |
| 掲載誌名 | Physical Review Letters |
| 巻・号・頁 | 83(7),1419-1422頁 |
| 著者・共著者 | A. N. Lavrov,Yoichi Ando,Kouji Segawa,J. Takeya |
| 概要 | We report on a contrasting behavior of the in-plane and out-of-plane magnetoresistance (MR) in heavily underdoped antiferromagnetic (AF) YBa2Cu3O(6+x) (x<0.37). The out-of-plane MR (I//c) is positive over most of the temperature range and shows a sharp increase, by about two orders of magnitude, upon cooling through the Neel temperature T_N. A contribution associated with the AF correlations is found to dominate the out-of-plane MR behavior for H//c from far above TN, pointing to the key role of spin fluctuations in the out-of-plane transport. In contrast, the transverse in-plane MR (I//a(b);H//c) appears to be small and smooth through T_N, implying that the development of the AF order has little effect on the in-plane resistivity. © 1999 The American Physical Society. |
| DOI | 10.1103/PhysRevLett.83.1419 |
| ISSN | 0031-9007/1079-7114 |