@article{64aed80a63f6431dbf541d31b1f47a7f,
title = "Slow electron-phonon relaxation controls the dynamics of the superconducting resistive transition",
abstract = "We investigate the temporal and spatial scales of resistance fluctuations (R fluctuations) at the superconducting resistive transition accessed through voltage fluctuation measurements in thin epitaxial TiN films. This material is characterized by slow electron-phonon relaxation, which puts it far beyond the applicability range of the textbook scenario of superconducting fluctuations. The measured Lorentzian spectrum of the R fluctuations identifies their correlation time, which is nearly constant across the transition region and has no relation to the conventional Ginzburg-Landau timescale. Instead, the correlation time coincides with the energy relaxation time determined by a combination of the electron-phonon relaxation and the relaxation via diffusion into reservoirs. Our data are quantitatively consistent with the model of spontaneous temperature fluctuations and highlight the lack of understanding of the resistive transition in materials with slow electron-phonon relaxation.",
author = "Baeva, {E. M.} and Kolbatova, {A. I.} and Titova, {N. A.} and S. Saha and A. Boltasseva and S. Bogdanov and Shalaev, {V. M.} and Semenov, {A. V.} and A. Levchenko and Goltsman, {G. N.} and Khrapai, {V. S.}",
note = "We are grateful to I. Burmistrov, A. Denisov, M. Feigelman, I. Gornyi, F. Jaekel, E. K\u00F6nig, D. McCammon, R. McDermott, A. Melnikov, D. Shovkun, A. Shuvaev, and E. Tikhonov for fruitful discussions. This study was conducted as a part of strategic project \u201CDigital Transformation: Technologies, Effectiveness, Efficiency\u201D of Higher School of Economics development programme granted by Ministry of Science and Higher Education of Russia \u201CPriority-2030\u201D grant as a part of \u201CScience and Universities\u201D national project and the Basic Research Program of the HSE University (transport measurements). The work was partially funded by the Ministry of Science and Higher Education of the Russian Federation FSME-2022-0008 (chip fabrication). The work at the UW-Madison was supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES) under Award No. DESC0020313 (A.L.).",
year = "2024",
month = sep,
day = "1",
doi = "10.1103/PhysRevB.110.104519",
language = "English (US)",
volume = "110",
journal = "Physical Review B",
issn = "2469-9950",
publisher = "American Physical Society",
number = "10",
}