4 papers
The tunneling spectra and superconducting gaps observed by using scanning tunneling microscope near the grain-boundary of FeSe0.3Te0.7 films
K. C. Lin, Y. S. Li, Y. T. Shen +2
We used STM to study the tunneling spectra of FeSe0.3Te0.7 films with two orientations of ab-planes and the connection ramp between them. We have discovered that, using pulse laser…
Conductance spectrum and superconducting gap structures observed in c-axis FeSe0.3Te0.7/Au junctions
Y. T. Shen, Y. S. Li, K. C. Lin +2
The electric transport properties of superconducting FeSe0.3Te0.7/Au c-axis (S/N) junctions, fabricated by using Pulsed Laser Deposition technique, have been investigated in the te…
Zero-bias conductance peak observed in Au/FeSe0.3Te0.7 ramp-type junctions and its implication on the superconducting order parameter
Y. S. Li, J. Y. Luo, M. J. Wang +3
Based upon the currently predominant theory of Fe-based superconductors, the order parameter symmetry is the nodaless s\pm-wave. Andreev conductance involving normal metals and suc…
Two-magnon Raman scattering in AFeSe systems: competition between superconductivity and antiferromagnetic order
A. M. Zhang, J. H. Xiao, Y. S. Li +6
We have performed Raman-scattering measurements on high-quality single crystals of AFeSe superconductors of several compositions. We find a broad, asymmetric pe…