Kaul, S. N. ; Kumar, S. ; Rodriguez Fernandez, J. ; Fernandez Barquin, L. (2006) Unconventional superconductivity in LaAg1-xMnx: relevance of spin-fluctuation-mediated pairing Europhysics Letters, 74 (1). pp. 138-144. ISSN 0295-5075
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Official URL: http://iopscience.iop.org/0295-5075/74/1/138
Related URL: http://dx.doi.org/10.1209/epl/i2005-10491-5
Abstract
We provide experimental evidence for unconventional superconductivity in a newly synthesized three-dimensional nearly antiferromagnetic metal, LaAg1-xMnx, and report results that indicate that the antiferromagnetic spin-fluctuation-mediated pairing may have a direct bearing on this phenomenon. Compared to the heavy-fermion systems, the superconducting transition temperature is nearly 10 times higher, superconductivity is robust against impurities and the specific-heat anomaly associated with the superconducting transition is extremely weak, or even absent. Our results are consistent with certain previously reported theoretical criteria for observing antiferromagnetic spin-fluctuation-mediated superconductivity at elevated temperatures.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to EDP Sciences. |
| ID Code: | 29850 |
| Deposited On: | 23 Dec 2010 04:18 |
| Last Modified: | 06 Jun 2011 09:15 |
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