Mesoscopic superconductivity: Josephson current through spin-polarized luttinger liquid

Nobuhiko Yokoshi; Susumu Kurihara

doi:10.1142/9789812701619_0018

Mesoscopic superconductivity: Josephson current through spin-polarized luttinger liquid

Nobuhiko Yokoshi, Susumu Kurihara

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Abstract

Josephson current through a Luttinger liquid (LL) under a magnetic field is theoretically studied. We derive an analytical expression of Josephson current for clean interfaces, by using quasiclassical Green’s function and functional bosonization procedure. Because of spin-dependent energy shift in Andreev bound states, current-phase relations acquire positive slopes at phase difference x=π (π-state). Renormalization of the critical current, due to electron-electron interactions, is found. Further, we show that repulsive interactions detabilize the π-state, while attractive ones stabilize.

Original language	English
Title of host publication	Realizing Controllable Quantum States: Mesoscopic Superconductivity and Spintronics - In the Light of Quantum Computation
Publisher	World Scientific Publishing Co.
Pages	114-119
Number of pages	6
ISBN (Print)	9789812701619, 9789812564689
DOIs	https://doi.org/10.1142/9789812701619_0018
Publication status	Published - 2005 Jan 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1142/9789812701619_0018

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Mesoscopic superconductivity: Josephson current through spin-polarized luttinger liquid. / Yokoshi, Nobuhiko; Kurihara, Susumu.
Realizing Controllable Quantum States: Mesoscopic Superconductivity and Spintronics - In the Light of Quantum Computation. World Scientific Publishing Co., 2005. p. 114-119.

Research output: Chapter in Book/Report/Conference proceeding › Chapter

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AB - Josephson current through a Luttinger liquid (LL) under a magnetic field is theoretically studied. We derive an analytical expression of Josephson current for clean interfaces, by using quasiclassical Green’s function and functional bosonization procedure. Because of spin-dependent energy shift in Andreev bound states, current-phase relations acquire positive slopes at phase difference x=π (π-state). Renormalization of the critical current, due to electron-electron interactions, is found. Further, we show that repulsive interactions detabilize the π-state, while attractive ones stabilize.

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BT - Realizing Controllable Quantum States: Mesoscopic Superconductivity and Spintronics - In the Light of Quantum Computation

PB - World Scientific Publishing Co.

ER -

Mesoscopic superconductivity: Josephson current through spin-polarized luttinger liquid

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