2019/12/15 by Mikhail Malakhov, Malakhov, Mikhail, M. V. Avdeev +2 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Magnetic and transport properties of perovskites and related materials #Physics of Superconductivity and Magnetism #Superconductivity (cond-mat.supr-con)
paper · pdf · doi:10.48550/arxiv.1912.07080
openalex publication_date 2019/12/15 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
We investigate the nonequilibrium pair density wave order parameter in a\nsimple microscopic model with the ground state d- wave spatially uniform\nsuperconductivity. After pushing the system out of equilibrium by a short-time\ninduced order parameter, the system can exhibit robust free nondecaying\noscillations of nonuniform superconducting order. In the weak nonequilibrium\nregime, the frequency of these oscillations is about 2\Δ/\ℏ and the\namplitude can be explained qualitatively by features of equilibrium free\nenergy. In case when the system was taken far from equilibrium, it transits to\na non-linear regime where even metastable coexistence of d- wave\nsuperconducting and pair density wave gaps are possible.\n