Unconventional superconductivity in Sr2RuO4

G. M. Luke; Y. Fudamoto; K. M. Kojima; M. I. Larkin; B. Nachumi; Y. J. Uemura; J. E. Sonier; Y. Maeno; Z. Q. Mao; Y. Mori; D. F. Agterberg

doi:10.1016/S0921-4526(00)00414-2

Unconventional superconductivity in Sr₂RuO₄

G. M. Luke, Y. Fudamoto, K. M. Kojima, M. I. Larkin, B. Nachumi, Y. J. Uemura, J. E. Sonier, Y. Maeno, Z. Q. Mao, Y. Mori, D. F. Agterberg

Research output: Contribution to journal › Conference article › peer-review

46 Scopus citations

Abstract

We have performed ZF-μSR measurements of Sr₂RuO₄ and have observed a spontaneous magnetic field below T_c. This observation, combined with other symmetry considerations demonstrates that superconductivity in Sr₂RuO₄ is of `p-wave' (odd-parity) type. Our transverse field μSR measurements in the mixed state with B = 150 G∥c clearly indicate the presence of a square flux lattice. We have analyzed the field distribution in terms of the penetration depth, coherence length and a Fermi surface anisotropy term and found λ(T = 0) = 1900 angstroms. λ(T→0) is quite flat, consistent with a superconducting gap with no nodes as expected for the E_u(k_x±ik_y) state.

Original language	English (US)
Pages (from-to)	373-376
Number of pages	4
Journal	Physica B: Condensed Matter
Volume	289-290
DOIs	https://doi.org/10.1016/S0921-4526(00)00414-2
State	Published - Aug 2000
Event	8th International Conference on Muon Spin Rotation, Relaxation and Resonance (muSR'99) - Les Diablerets, Switz Duration: Aug 30 1999 → Sep 3 1999

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(00)00414-2

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@article{8d509138122f4658a17e844c9e3ba502,

title = "Unconventional superconductivity in Sr2RuO4",

abstract = "We have performed ZF-μSR measurements of Sr2RuO4 and have observed a spontaneous magnetic field below Tc. This observation, combined with other symmetry considerations demonstrates that superconductivity in Sr2RuO4 is of `p-wave' (odd-parity) type. Our transverse field μSR measurements in the mixed state with B = 150 G∥c clearly indicate the presence of a square flux lattice. We have analyzed the field distribution in terms of the penetration depth, coherence length and a Fermi surface anisotropy term and found λ(T = 0) = 1900 angstroms. λ(T→0) is quite flat, consistent with a superconducting gap with no nodes as expected for the Eu(kx±iky) state.",

author = "Luke, \{G. M.\} and Y. Fudamoto and Kojima, \{K. M.\} and Larkin, \{M. I.\} and B. Nachumi and Uemura, \{Y. J.\} and Sonier, \{J. E.\} and Y. Maeno and Mao, \{Z. Q.\} and Y. Mori and Agterberg, \{D. F.\}",

note = "Copyright: Copyright 2018 Elsevier B.V., All rights reserved.; 8th International Conference on Muon Spin Rotation, Relaxation and Resonance (muSR'99) ; Conference date: 30-08-1999 Through 03-09-1999",

year = "2000",

month = aug,

doi = "10.1016/S0921-4526(00)00414-2",

language = "English (US)",

volume = "289-290",

pages = "373--376",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Unconventional superconductivity in Sr2RuO4

AU - Luke, G. M.

AU - Fudamoto, Y.

AU - Kojima, K. M.

AU - Larkin, M. I.

AU - Nachumi, B.

AU - Uemura, Y. J.

AU - Sonier, J. E.

AU - Maeno, Y.

AU - Mao, Z. Q.

AU - Mori, Y.

AU - Agterberg, D. F.

PY - 2000/8

Y1 - 2000/8

N2 - We have performed ZF-μSR measurements of Sr2RuO4 and have observed a spontaneous magnetic field below Tc. This observation, combined with other symmetry considerations demonstrates that superconductivity in Sr2RuO4 is of `p-wave' (odd-parity) type. Our transverse field μSR measurements in the mixed state with B = 150 G∥c clearly indicate the presence of a square flux lattice. We have analyzed the field distribution in terms of the penetration depth, coherence length and a Fermi surface anisotropy term and found λ(T = 0) = 1900 angstroms. λ(T→0) is quite flat, consistent with a superconducting gap with no nodes as expected for the Eu(kx±iky) state.

AB - We have performed ZF-μSR measurements of Sr2RuO4 and have observed a spontaneous magnetic field below Tc. This observation, combined with other symmetry considerations demonstrates that superconductivity in Sr2RuO4 is of `p-wave' (odd-parity) type. Our transverse field μSR measurements in the mixed state with B = 150 G∥c clearly indicate the presence of a square flux lattice. We have analyzed the field distribution in terms of the penetration depth, coherence length and a Fermi surface anisotropy term and found λ(T = 0) = 1900 angstroms. λ(T→0) is quite flat, consistent with a superconducting gap with no nodes as expected for the Eu(kx±iky) state.

UR - https://www.scopus.com/pages/publications/0033704813

UR - https://www.scopus.com/inward/citedby.url?scp=0033704813&partnerID=8YFLogxK

U2 - 10.1016/S0921-4526(00)00414-2

DO - 10.1016/S0921-4526(00)00414-2

M3 - Conference article

AN - SCOPUS:0033704813

SN - 0921-4526

VL - 289-290

SP - 373

EP - 376

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

T2 - 8th International Conference on Muon Spin Rotation, Relaxation and Resonance (muSR'99)

Y2 - 30 August 1999 through 3 September 1999

ER -

Unconventional superconductivity in Sr₂RuO₄

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