Mass of Abrikosov vortex in high-temperature superconductor YBa.sub.2./sub.Cu.sub.3./sub.O.sub.7-δ./sub

0547802 - FZÚ 2022 RIV GB eng J - Článek v odborném periodiku
Tesař, Roman - Šindler, Michal - Kadlec, Christelle - Lipavský, P. - Skrbek, L. - Koláček, Jan
Mass of Abrikosov vortex in high-temperature superconductor YBa₂Cu₃O_7-δ
Scientific Reports. Roč. 11, Nov. (2021), č. článku 21708. ISSN 2045-2322. E-ISSN 2045-2322
Grant CEP: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GA21-11089S
Grant ostatní: OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institucionální podpora: RVO:68378271
Klíčová slova: Abrikosov vortex * high-temperature superconductors * terahertz spectroscopy * magnetic circular dichroism
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 4.997, rok: 2021
Způsob publikování: Open access

For more than four decades, the mass of Abrikosov vortices defied experimental observations. We demonstrate a method of its detection in high-temperature superconductors. Similar to electrons, fluxons circulate in the direction given by the magnetic field, causing circular dichroism. We report the magneto-transmittance of a nearly optimally doped thin YBa2Cu3O7-δ film, measured using circularly polarized submillimeter waves. The circular dichroism emerges in the superconducting state and increases with dropping temperature. Our results confirm the dominant role of quasiparticle states in the vortex core and yield the diagonal fluxon mass of 2.2×108 electron masses per centimeter at 45 K and zero-frequency limit and even larger off-diagonal mass of 4.9×108me/cm.
Trvalý link: http://hdl.handle.net/11104/0323988