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cond-mat.supr-con2025
Multiple correlation lengths and type-1.5 superconductivity in superconductors due to hidden competition between irreducible representations of nonlocal pairing
Anton Talkachov, Paul Leask, Egor Babaev
A fundamental characteristic of a superconducting state is the coherence length . Multicomponent superconductors, particularly ones breaking multiple symmetries, are characteriz…
cond-mat.supr-con2025
Microscopic theory of strain-controlled split superconducting and time-reversal symmetry-breaking transitions in superconductor
Anton Talkachov, Egor Babaev
We study conditions of the appearance of superconducting states that spontaneously break time-reversal symmetry (BTRS) on a square lattice as a function o…
cond-mat.supr-con2025
Ultrasound response to time-reversal symmetry breaking below the superconducting phase transition
Chris Halcrow, Paul Leask, Egor Babaev
Ultrasound attenuation is a powerful probe of symmetry-breaking phenomena in superconductors. In this work, we develop a framework to model the ultrasound response of multi-compone…