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87 papers · 1 filter
Robustness of the Kohn-Luttinger mechanism against symmetry breaking
Amir Dalal, Jonathan Ruhman, Vladyslav Kozii
We investigate how strongly broken spatial symmetries affect the Kohn--Luttinger (KL) mechanism, in which superconductivity emerges purely from repulsive interactions. While the or…
Freestanding single-crystal superconducting electron-doped cuprate membrane
Shay Sandik, Bat-Chen Elshalem, Amram Azulay +4
Thin films of cuprate superconductors are easier to control in terms of doping as compared to bulk samples. However, they require specific substrates to facilitate epitaxial growth…
Misfit layer superconductors, tuneable bulk heterostructures with strong 2D effects
Tomas Samuely, Martin Gmitra, Tristan Cren +2
Atomically thin layered materials are systems with zero limit bulk-to-surface ratio. Their physical properties are determined by two-dimensionality and strongly affected by interfa…
Nernst Sign-Reversal in the Hexatic Vortex Phase of Weakly Disordered a-MoGe Thin Films
Y. Wu, A. Roy, S. Dutta +3
The hexatic phase is an intermediate stage in the melting process of a 2D crystal due to topological defects. Recently, this exotic phase was experimentally identified in the vorte…
The field theory of a superconductor with repulsion
Amir Dalal, Jonathan Ruhman, Vladyslav Kozii
A superconductor emerges as a condensate of electron pairs, which bind despite their strong Coulomb repulsion. Eliashberg's theory elucidates the mechanisms enabling them to overco…
Proximitized insulators from disordered superconductors
Moshe Haim, David Dentelski, Aviad Frydman
We present an experimental study of bilayers of a disordered Ag metal layer close to the metal-insulator transition and an Indium Oxide film which is on the insulating side of the…