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9 papers · 2 filters
Hund interaction, spin-orbit coupling and the mechanism of superconductivity in strongly hole-doped iron pnictides
Oskar Vafek, Andrey V. Chubukov
We present a novel mechanism of s-wave pairing in Fe-based superconductors. The mechanism involves holes near dxz/dyz pockets only and is applicable primarily to strongly hole dope…
Intrinsic and extrinsic pinning in NdFeAs(O,F): vortex trapping and lock-in by the layered structure
C. Tarantini, K. Iida, J. Haenisch +10
The Fe-based superconductors (FBS) present a large variety of compounds whose properties are affected to different extents by their crystal structures. Amongst them, the F…
Thermodynamic Anomaly Above the Superconducting Critical Temperature in the Quasi One-Dimensional Superconductor TaPdTe
T. Helm, F. Flicker, R. Kealhofer +9
We study the intrinsic transport anisotropy and fermiology of the quasi one-dimensional superconductor TaPdTe. Below K we detect a thermodynamic phase trans…
Back to mechanisms of superconductivity in low-doped strontium titanate
Lev P. Gor'kov
We have analyzed two mechanisms proposed recently for superconductivity in doped SrTiO3 - the plasmon-mediated pairing and the potential of an instantaneous attraction between two…
Observation of electronic bound states in charge-ordered YBaCuO
R. Zhou, M. Hirata, T. Wu +11
Observing how electronic states in solids react to a local symmetry breaking provides insight into their microscopic nature. A striking example is the formation of bound states whe…
Displacement and annihilation of Dirac gap-nodes in d-wave iron-based superconductors
Andrey V. Chubukov, Oskar Vafek, Rafael M. Fernandes
Several experimental and theoretical arguments have been made in favor of a wave symmetry for the superconducting state in some Fe-based materials. It is a common belief that a…