most citedSupercurrent from the imaginary part of the Andreev levels in non-Hermitian Josephson junctions

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cond-mat.str-el2026

Sound attenuation and velocity shift in antiferromagnetic spin-1/2 chains

Edmond Orignac, Emeric Caprani, Roberta Citro

We investigate ultrasound attenuation and sound velocity shift in antiferromagnetic spin-1/2 XXZ chains in magnetic field. We relate the sound velocity shift to derivatives of the…

cond-mat.str-el2026

Superconductivity in the repulsive Hubbard model on different geometries induced by density-assisted hopping

Franco T. Lisandrini, Edmond Orignac, Roberta Citro +2

We study the effect of density-assisted hopping on different dimerized lattice geometries, such as bilayers and ladder structures. We show analytically that the density-assisted ho…