Long-range triplet proximity effect in multiply connected ferromagnet-superconductor hybrids
Samokhvalov A. V., Robinson J. W. A., Buzdin A.
Physical Review B
Vol.100, Issue1, Num.014509
Опубликовано: 2019
Тип ресурса: Статья
DOI:10.1103/PhysRevB.100.014509
Аннотация:
Applying the linearized Usadel equations, we consider the nucleation of superconductivity in multiply connected mesoscopic superconductor/ferromagnet (S/F) hybrids such as a thin superconducting ring on a ferromagnet with a uniform in-plane magnetization M and a spin-active S/F interface. We demonstrate that the exchange field in F provokes a switching between superconducting states with different vorticities which may increase the critical temperature(Tc) of the superconductor in a magnetic field. We study the interplay between oscillations in Tc due to the Little-Parks effect and oscillations in Tc induced by the exchange field. Furthermore, we analyze the influence of long-range spin-triplet correlations on the switching between different vorticities. © 2019 American Physical Society.
Ключевые слова:
Ferromagnetic materials; Ferromagnetism; Magnets; Vorticity; Critical temperatures; In-plane magnetization; Little-Parks effects; Mesoscopic superconductors; Proximity effects; Superconducting rings; Superconducting state; Usadel equations; Superconducting materials
Язык текста: Английский
ISSN: 2469-9969
Samokhvalov A. V.
Robinson J. W. A.
Buzdin A. Aleksandr 1954-
Самохвалов А. В.
Робинсон Й. W. А.
Буздин А. Александр 1954-
Long-range triplet proximity effect in multiply connected ferromagnet-superconductor hybrids
Текст визуальный непосредственный
Physical Review B
Vol.100, Issue1 Num.014509
2019
Статья
Ferromagnetic materials Ferromagnetism Magnets Vorticity Critical temperatures In-plane magnetization Little-Parks effects Mesoscopic superconductors Proximity effects Superconducting rings Superconducting state Usadel equations Superconducting materials
Applying the linearized Usadel equations, we consider the nucleation of superconductivity in multiply connected mesoscopic superconductor/ferromagnet (S/F) hybrids such as a thin superconducting ring on a ferromagnet with a uniform in-plane magnetization M and a spin-active S/F interface. We demonstrate that the exchange field in F provokes a switching between superconducting states with different vorticities which may increase the critical temperature(Tc) of the superconductor in a magnetic field. We study the interplay between oscillations in Tc due to the Little-Parks effect and oscillations in Tc induced by the exchange field. Furthermore, we analyze the influence of long-range spin-triplet correlations on the switching between different vorticities. © 2019 American Physical Society.