Temperature Controlled Fulde-Ferrell-Larkin-Ovchinnikov Instability in Superconductor-Ferromagnet Hybrids
Mironov S. V., Vodolazov D. Y., Yerin Y., Samokhvalov A. V., Mel'Nikov A. S., Buzdin A.
Physical Review Letters
Vol.121, Issue7, Num.077002
Опубликовано: 2018
Тип ресурса: Статья
DOI:10.1103/PhysRevLett.121.077002
Аннотация:
We show that a wide class of layered superconductor-ferromagnet (S/F) hybrids demonstrates the emergence of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase well below the superconducting transition temperature. By decreasing the temperature, one can switch the system from uniform to the FFLO state which is accompanied by the damping of the diamagnetic Meissner response down to zero and also by the sign change in the curvature of the current-velocity dependence. Our estimates show that an additional layer of the normal metal (N) covering the ferromagnet substantially softens the conditions required for the predicted FFLO instability, and for existing S/F/N systems, the temperature of the transition into the FFLO phase can reach several kelvins. © 2018 American Physical Society.
Ключевые слова:
Condensed matter physics; Ferromagnetic materials; Ferromagnetism; Magnets; Superconducting transition temperature; Current velocity; Ferromagnets; FFLO state; Fulde-Ferrell; Larkin-Ovchinnikov; Layered superconductor; Normal metals; Sign-change; Superconducting materials
Язык текста: Английский
ISSN: 1079-7114
Mironov S. V.
Vodolazov D. Y.
Yerin Y.
Samokhvalov A. V.
Mel'Nikov A. S.
Buzdin A. Aleksandr 1954-
Миронов С. В.
Водолазов Д. Y.
Ьерин Y.
Самохвалов А. В.
Мел'Ников А. С.
Буздин А. Александр 1954-
Temperature Controlled Fulde-Ferrell-Larkin-Ovchinnikov Instability in Superconductor-Ferromagnet Hybrids
Текст визуальный непосредственный
Physical Review Letters
American Physical Society
Vol.121, Issue7 Num.077002
2018
Статья
Condensed matter physics Ferromagnetic materials Ferromagnetism Magnets Superconducting transition temperature Current velocity Ferromagnets FFLO state Fulde-Ferrell Larkin-Ovchinnikov Layered superconductor Normal metals Sign-change Superconducting materials
We show that a wide class of layered superconductor-ferromagnet (S/F) hybrids demonstrates the emergence of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) phase well below the superconducting transition temperature. By decreasing the temperature, one can switch the system from uniform to the FFLO state which is accompanied by the damping of the diamagnetic Meissner response down to zero and also by the sign change in the curvature of the current-velocity dependence. Our estimates show that an additional layer of the normal metal (N) covering the ferromagnet substantially softens the conditions required for the predicted FFLO instability, and for existing S/F/N systems, the temperature of the transition into the FFLO phase can reach several kelvins. © 2018 American Physical Society.