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12 papers · 1 filter
Parametric quantum spin pump
Wei Zheng, Junling Wu, Baigeng Wang +3
We investigate a non-adiabatic parametric quantum pump consists of a nonmagnetic scattering region connected by two ferromagnetic leads. The presence of ferromagnetic leads allows…
Unitary limit and quantum interference effect in disordered two-dimensional crystals with nearly half-filled bands
Y. H. Yang, D. Y. Xing, Y. G. Wang +1
Based on the self-consistent -matrix approximation, the quantum interference (QI) effect is studied with the diagrammatic technique in weakly-disordered two-dimensional crystals…
Test for Pairing Symmetry Based on Spin Fluctuations in Organic Superconductors -(BEDT-TTF)X
Jian-Xin Li
We propose that the superconducting pairing symmetry of organic superconductors -(BEDT-TTF)X can be determined by measuring the position in momentum space of the incommens…
Quasiparticle Delocalization Induced by Novel Quantum Interference in Disordered d-Wave Superconductors
Y. H. Yang, D. Y. Xing, M. Liu +1
The diagrammatic approach is applied to study quasiparticle transport properties in two-dimensional d-wave superconductors with dilute nonmagnetic impurities both in Born and in un…
Effect of Na doping on flux pinning of YBa1.9Na0.1Cu3O7-d
S. Y. Ding, X. Leng, L. Qiu +4
We have prepared Na-doped YBa2Cu3Oy (YBa1.9Na0.1Cu3Oy +40mol%Y211) (YBNCO) and Na-free YBa2Cu3Oy (YBCO) samples by the Melt-Textured Growth (MTG) method to study the effect of dope…
History effect in inhomogeneous superconductors
Y. Liu, H. Luo, X. Leng +4
A model was proposed to account for a new kind of history effect in the transport measurement of a sample with inhomogeneous flux pinning coupled with flux creep. The inhomogeneity…