Phase sensitive experiments in ferromagnetic-based Josephson junctions

被引：100

作者：

Guichard, W

Aprili, M

Bourgeois, O

Kontos, T

Lesueur, J

Gandit, P

机构：

[1] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France

[2] Univ Paris 11, CNRS, CSNSM, F-91405 Orsay, France

[3] Ecole Super Phys & Chim Ind Ville Paris, F-75231 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 16期

关键词：

D O I：

10.1103/PhysRevLett.90.167001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured the ground state of ferromagnetic Josephson junctions using a single dc SQUID (superconducting quantum interference device).We show that the Josephson coupling is either positive (0 coupling) or negative (pi coupling) depending on the ferromagnetic layer thickness. As expected, the sign change of the Josephson coupling is observed as a shift of half a quantum flux in the SQUID diffraction pattern when operating in the linear limit.

引用

页数：4

共 23 条

[1]

ANDREEV AF, 1964, SOV PHYS JETP-USSR, V19, P1228

[2]

[Anonymous], 1982, PHYSICS APPL JOSEPHS

[3] Discovery of a metastable π-state in a superfluid 3He weak link [J].

Backhaus, S ;

Pereverzev, S ;

Simmonds, RW ;

Loshak, A ;

Davis, JC ;

Packard, RE .

NATURE, 1998, 392 (6677) :687-690

[4] Reversing the direction of the supercurrent in a controllable Josephson junction [J].

Baselmans, JJA ;

Morpurgo, AF ;

van Wees, BJ ;

Klapwijk, TM .

NATURE, 1999, 397 (6714) :43-45

[5] THE OSCILLATION OF THE CRITICAL-TEMPERATURE OF S-F MULTILAYERS [J].

BUZDIN, AI ;

KUPRIYANOV, MY ;

VUJICIC, B .

PHYSICA C, 1991, 185 :2025-2026

[6]

BUZDIN AI, 1982, JETP LETT+, V35, P178

[7] QUANTUM-INTERFERENCE PHENOMENA IN POINT CONTACTS BETWEEN 2 SUPERCONDUCTORS [J].

DEWAELE, ATA ;

OUBOTER, RDB .

PHYSICA, 1969, 41 (02) :225-&

[8] Thermostable trilayer resist for niobium lift-off [J].

Dubos, P ;

Charlat, P ;

Crozes, T ;

Paniez, P ;

Pannetier, B .

JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B, 2000, 18 (01) :122-126

[9] Niobium and niobium nitride SQUIDs based on anodized nanobridges made with an atomic force microscope [J].

Faucher, M ;

Fournier, T ;

Pannetier, B ;

Thirion, C ;

Wernsdorfer, W ;

Villegier, JC ;

Bouchiat, V .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2002, 368 (1-4) :211-217

[10]

GARNIER JF, 1984, THESIS I NATL POLYTE

← 1 2 3 →