Abstract：The nature of the pseudogap state and its relation to the d-wave superconductivity in high-Tc superconductors is still an open issue. The vortex-like excitations detected by the Nernst effect measurements exist in a certain temperature range above superconducting transition temperature Tc, which strongly support that the pseudogap phase is characterized by finite pairing amplitude with strong phase fluctuations and imply that the phase transition at Tc is driven by the loss of long-range phase coherence. We first briefly introduce the electronic phase diagram and pseudogap state of high-Tc superconductors, and then review the results of Nernst effect for different high-Tc superconductors. Related theoretical models are also discussed.
出版日期: 2006-09-05
引用本文:
. The vortex-like excitations detected by Nernst signals in high-Tc superconductors[J]. Frontiers of Physics in China - Selected Publications from Chinese Universities, 2006, 1(3): 344-350.
XU Zhu-an, SHEN Jing-qin, ZHU Zeng-wei. The vortex-like excitations detected by Nernst signals in high-Tc superconductors. Front. Phys. , 2006, 1(3): 344-350.
