Direct measurement of the current-phase relation of a superfluid 3He-B weak link

S. Backhaus; S. V. Pereverzev; A. Loshak; J. C. Davis; R. E. Packard

doi:10.1126/science.278.5342.1435

Direct measurement of the current-phase relation of a superfluid ³He-B weak link

S. Backhaus
, S. V. Pereverzev
, A. Loshak
, J. C. Davis
, R. E. Packard

Russian Academy of Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

Direct measurements of the current-phase relation, I versus Δφ, for a weak link coupling two reservoirs of B-phase superfluid helium-3 (³He-B) were made over a wide range of temperatures. The weak link consists of a square array of 100-nanometer-diameter apertures. For temperatures T such that T/T(c) ≤ 0.6 (where T(c) is the superfluid transition temperature),/(∞) sin(Δφ). At lower temperatures,/(Δφ) approaches a straight line. Several remarkable phenomena heretofore inaccessible to superconducting Josephson junctions, including direct observation of quantum oscillations and continuous knowledge of Δφ, were also observed.

Original language	English
Pages (from-to)	1435-1438
Number of pages	4
Journal	Science
Volume	278
Issue number	5342
DOIs	https://doi.org/10.1126/science.278.5342.1435
Publication status	Published - 1997
Externally published	Yes

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title = "Direct measurement of the current-phase relation of a superfluid 3He-B weak link",

abstract = "Direct measurements of the current-phase relation, I versus Δφ, for a weak link coupling two reservoirs of B-phase superfluid helium-3 (3He-B) were made over a wide range of temperatures. The weak link consists of a square array of 100-nanometer-diameter apertures. For temperatures T such that T/T(c) ≤ 0.6 (where T(c) is the superfluid transition temperature),/(∞) sin(Δφ). At lower temperatures,/(Δφ) approaches a straight line. Several remarkable phenomena heretofore inaccessible to superconducting Josephson junctions, including direct observation of quantum oscillations and continuous knowledge of Δφ, were also observed.",

author = "S. Backhaus and Pereverzev, \{S. V.\} and A. Loshak and Davis, \{J. C.\} and Packard, \{R. E.\}",

year = "1997",

doi = "10.1126/science.278.5342.1435",

language = "English",

volume = "278",

pages = "1435--1438",

journal = "Science",

issn = "0036-8075",

publisher = "American Association for the Advancement of Science",

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TY - JOUR

T1 - Direct measurement of the current-phase relation of a superfluid 3He-B weak link

AU - Backhaus, S.

AU - Pereverzev, S. V.

AU - Loshak, A.

AU - Davis, J. C.

AU - Packard, R. E.

PY - 1997

Y1 - 1997

N2 - Direct measurements of the current-phase relation, I versus Δφ, for a weak link coupling two reservoirs of B-phase superfluid helium-3 (3He-B) were made over a wide range of temperatures. The weak link consists of a square array of 100-nanometer-diameter apertures. For temperatures T such that T/T(c) ≤ 0.6 (where T(c) is the superfluid transition temperature),/(∞) sin(Δφ). At lower temperatures,/(Δφ) approaches a straight line. Several remarkable phenomena heretofore inaccessible to superconducting Josephson junctions, including direct observation of quantum oscillations and continuous knowledge of Δφ, were also observed.

AB - Direct measurements of the current-phase relation, I versus Δφ, for a weak link coupling two reservoirs of B-phase superfluid helium-3 (3He-B) were made over a wide range of temperatures. The weak link consists of a square array of 100-nanometer-diameter apertures. For temperatures T such that T/T(c) ≤ 0.6 (where T(c) is the superfluid transition temperature),/(∞) sin(Δφ). At lower temperatures,/(Δφ) approaches a straight line. Several remarkable phenomena heretofore inaccessible to superconducting Josephson junctions, including direct observation of quantum oscillations and continuous knowledge of Δφ, were also observed.

UR - https://www.scopus.com/pages/publications/0030670503

U2 - 10.1126/science.278.5342.1435

DO - 10.1126/science.278.5342.1435

M3 - Article

AN - SCOPUS:0030670503

SN - 0036-8075

VL - 278

SP - 1435

EP - 1438

JO - Science

JF - Science

IS - 5342

ER -

Direct measurement of the current-phase relation of a superfluid ³He-B weak link

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