Critical microwave-conductivity fluctuations across the phase diagram of superconducting La$_{2-x}$Sr$_x$CuO$_4$ thin films
| dc.creator | Kitano, Haruhisa | |
| dc.creator | Ohashi, Takeyoshi | |
| dc.creator | Maeda, Atsutaka | |
| dc.creator | Tsukada, Ichiro | |
| dc.date | 2006-01-12 | |
| dc.date.accessioned | 2026-07-07T06:57:30Z | |
| dc.date.available | 2026-07-07T06:57:30Z | |
| dc.description | We report a systematic study of the dynamic microwave conductivity near $T_c$ for La$_{2-x}$Sr$_x$CuO$_4$ (LSCO) thin films with $x$=0.07 to 0.16. The strong frequency dependence of the phase stiffness together with scaling analysis of the ac fluctuating conductivity of superconductivity provide direct evidence for the 2D-XY behavior of nearly decoupled CuO$_2$ planes in underdoped LSCO ($x$=0.07 and 0.12). On the other hand, the critical exponents for slightly overdoped LSCO ($x$=0.16) were found to agree with those for the relaxational 3D-XY model, indicating that the universality class in LSCO is changed by hole doping. The implication of these results for the phase diagram of high-$T_c$ cuprates is discussed. | |
| dc.description | 4pages, 4 figures | |
| dc.identifier | https://arxiv.org/abs/cond-mat/0601243 | |
| dc.identifier | http://arxiv.org/abs/cond-mat/0601243 | |
| dc.identifier | Phys. Rev. B vol.73, 092504 (2006). | |
| dc.identifier | doi:10.1103/PhysRevB.73.092504 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/106989 | |
| dc.subject | Superconductivity | |
| dc.title | Critical microwave-conductivity fluctuations across the phase diagram of superconducting La$_{2-x}$Sr$_x$CuO$_4$ thin films | |
| dc.type | text |