Spin and current variations in Josephson junctions

Сверхпроводимость и мезоскопические структуры

Автор(и)

  • A. Shnirman Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany
  • Z. Nussinov Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • Jian-Xin Zhu Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • A.V. Balatsky Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
  • Yu. Makhlin Institut für Theoretische Festkörperphysik, Universität Karlsruhe, D-76128 Karlsruhe, Germany

DOI:

https://doi.org/10.1063/1.1789934

Ключові слова:

PACS: 74.50. r, 75.20.Hr, 73.40.Gk

Анотація

We study the dynamics of a single spin embedded in the tunneling barrier between two superconductors. As a consequence of pair correlations in the superconducting state, the spin displays rich and unusual dynamics. To properly describe the time evolution of the spin we derive the effective Keldysh action for the spin. The superconducting correlations lead to an effective spin action, which is nonlocal in time, leading to unconventional precession. We further illustrate how the current is modulated by this novel spin dynamics.

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Опубліковано

2004-06-17

Як цитувати

(1)
Shnirman, A.; Nussinov, Z.; Zhu, J.-X.; Balatsky, A.; Makhlin, Y. Spin and Current Variations in Josephson Junctions: Сверхпроводимость и мезоскопические структуры. Fiz. Nizk. Temp. 2004, 30, 834-840.

Номер

Том 30 № 7-8 (2004)

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