Critical behavior in the low-energy spin fluctuations in high-T-c superconductors
Panagopoulos, C., Tallon, J.L., Rainford, B.D., Xiang, T., Cooper, J.R. and Scott, C.A. (2002) Critical behavior in the low-energy spin fluctuations in high-T-c superconductors. Journal of Superconductivity, 15, (5), 335-338. (doi:10.1023/A:1021061911839).
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Description/Abstract
We study the spin fluctuations of pure and Zn-substituted La2 – x Sr x CuO4 using the muon spin relaxation technique. Superconductivity is found to coexist with low-frequency spin fluctuations over a large region of the superconducting phase diagram. The characteristic temperature of spin fluctuations detected by SR decreases with increasing x and vanishes above a critical doping x c 0.19. This value of x c coincides with the doping at which the normal state pseudogap extrapolates to zero. These results are discussed in terms of a quantum transition that separates the superconducting phase diagram of high-temperature superconductors into two distinct ground states.
| Item Type: | Article |
|---|---|
| ISSNs: | 0896-1107 (print) |
| Related URLs: | |
| Keywords: | spin dynamics, criticality, high-T c cuprates |
| Subjects: | Q Science > QC Physics |
| Divisions: | University Structure - Pre August 2011 > School of Physics and Astronomy |
| Item ID: | 57528 |
| Date Deposited: | 14 Aug 2008 |
| Last Modified: | 16 Aug 2012 02:39 |
| Contributors: | Panagopoulos, C. (Author) Tallon, J.L. (Author) Rainford, B.D. (Author) Xiang, T. (Author) Cooper, J.R. (Author) Scott, C.A. (Author) |
| Date: | 2002 |
| Status: | Published |
| URI: | http://eprints.soton.ac.uk/id/eprint/57528 |
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