Reaching the unreachable: critical scaling at the superconducting transition
- Authors
- Salamon, M.B.; 이원춘; Ghiron, K; Shi, J.; Overend, N; Howson, M.A.
- Issue Date
- Nov-1993
- Publisher
- Elsevier BV
- Citation
- Physica A: Statistical Mechanics and its Applications, v.200, no.1-4, pp 365 - 373
- Pages
- 9
- Journal Title
- Physica A: Statistical Mechanics and its Applications
- Volume
- 200
- Number
- 1-4
- Start Page
- 365
- End Page
- 373
- URI
- https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/151013
- DOI
- 10.1016/0378-4371(93)90536-D
- ISSN
- 0378-4371
- Abstract
- The large coherence length of conventional superconductors causes the critical region near Tc to be unobservably small, leading to the impression that mean-field theory can adequately explain properties near the transition. The high-temperature superconductors, however, have such strongly type-II character that the critical, or at least an intermediate critical, region is experimentally accessible. We demonstrate the applicability of XY-like critical scaling to magnetization, heat capacity and conductivity data and through the fitting parameters, make contact with a strong-coupling calculation of the critical temperature. Further, the scaled conductivity data show clear evidence for a thermodynamic transition along the freezing line Hm(T)∝(1 − T/Tc)43.
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