Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-10386
Strässle, S; Roos, J; Mali, M; Keller, H; Ohno, T (2008). Lack of Evidence for Orbital-Current Effects in the High-Temperature Y2Ba4Cu7O15-δ Superconductor using ^89Y Nuclear Magnetic Resonance. Physical Review Letters, 101(23):237001.
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| Accepted Version 1141Kb |
Abstract
We have performed NMR measurements at the Y site on a c-axis-oriented powder sample of the cuprate superconductor Y2Ba4Cu7O15-delta to search for the possible orbital-current phase. The temperature dependence of the Y linewidth and relaxation behavior in the normal-conducting phase were studied down to 100 K. These measurements give upper limits for a static magnetic field and the amplitude of a fluctuating magnetic field at the Y site of <~0.15 and <~0.7 mT, respectively. These values provide significant constraints on possible static or quasistatic orbital currents.
| Item Type: | Journal Article, refereed, original work |
|---|---|
| Communities & Collections: | 07 Faculty of Science > Physics Institute |
| DDC: | 530 Physics |
| Language: | English |
| Date: | 05 December 2008 |
| Deposited On: | 10 Feb 2009 13:49 |
| Last Modified: | 23 Nov 2012 14:29 |
| Publisher: | American Physical Society |
| ISSN: | 0031-9007 |
| Publisher DOI: | 10.1103/PhysRevLett.101.237001 |
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