Suppression of proximity effect and the enhancement of p-wave superconductivity in the Sr2RuO4-Ru system

Y. A. Ying; Y. Xin; B. W. Clouser; E. Hao; N. E. Staley; R. J. Myers; L. F. Allard; D. Fobes; T. Liu; Z. Q. Mao; Y. Liu

doi:10.1103/PhysRevLett.103.247004

Suppression of proximity effect and the enhancement of p-wave superconductivity in the Sr2RuO4-Ru system

Y. A. Ying
, Y. Xin
, B. W. Clouser
, E. Hao
, N. E. Staley
, R. J. Myers
, L. F. Allard
, D. Fobes
, T. Liu
, Z. Q. Mao
, Y. Liu

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

25 Scopus citations

Abstract

We report unexpected phenomena observed on the Sr2RuO4-Ru eutectic phase featuring Ru islands embedded in a bulk crystal of the chiral p-wave superconductor Sr2RuO4. It was found that the Sr2RuO4/Ru interface is atomically sharp, terminated uniformly by a Sr/O layer. Surprisingly, the proximity-induced p-wave superconducting energy gap predicted by theory was not detected inside Ru islands. Our results suggest that the previously observed enhancement of superconductivity in this eutectic phase occurs away from rather than near the Sr2RuO4/Ru interface, where dislocations and phonon hardening were found.

Original language	English
Article number	247004
Journal	Physical Review Letters
Volume	103
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevLett.103.247004
State	Published - Dec 11 2009

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10.1103/PhysRevLett.103.247004

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title = "Suppression of proximity effect and the enhancement of p-wave superconductivity in the Sr2RuO4-Ru system",

abstract = "We report unexpected phenomena observed on the Sr2RuO4-Ru eutectic phase featuring Ru islands embedded in a bulk crystal of the chiral p-wave superconductor Sr2RuO4. It was found that the Sr2RuO4/Ru interface is atomically sharp, terminated uniformly by a Sr/O layer. Surprisingly, the proximity-induced p-wave superconducting energy gap predicted by theory was not detected inside Ru islands. Our results suggest that the previously observed enhancement of superconductivity in this eutectic phase occurs away from rather than near the Sr2RuO4/Ru interface, where dislocations and phonon hardening were found.",

author = "Ying, \{Y. A.\} and Y. Xin and Clouser, \{B. W.\} and E. Hao and Staley, \{N. E.\} and Myers, \{R. J.\} and Allard, \{L. F.\} and D. Fobes and T. Liu and Mao, \{Z. Q.\} and Y. Liu",

year = "2009",

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doi = "10.1103/PhysRevLett.103.247004",

language = "English",

volume = "103",

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T1 - Suppression of proximity effect and the enhancement of p-wave superconductivity in the Sr2RuO4-Ru system

AU - Ying, Y. A.

AU - Xin, Y.

AU - Clouser, B. W.

AU - Hao, E.

AU - Staley, N. E.

AU - Myers, R. J.

AU - Allard, L. F.

AU - Fobes, D.

AU - Liu, T.

AU - Mao, Z. Q.

AU - Liu, Y.

PY - 2009/12/11

Y1 - 2009/12/11

N2 - We report unexpected phenomena observed on the Sr2RuO4-Ru eutectic phase featuring Ru islands embedded in a bulk crystal of the chiral p-wave superconductor Sr2RuO4. It was found that the Sr2RuO4/Ru interface is atomically sharp, terminated uniformly by a Sr/O layer. Surprisingly, the proximity-induced p-wave superconducting energy gap predicted by theory was not detected inside Ru islands. Our results suggest that the previously observed enhancement of superconductivity in this eutectic phase occurs away from rather than near the Sr2RuO4/Ru interface, where dislocations and phonon hardening were found.

AB - We report unexpected phenomena observed on the Sr2RuO4-Ru eutectic phase featuring Ru islands embedded in a bulk crystal of the chiral p-wave superconductor Sr2RuO4. It was found that the Sr2RuO4/Ru interface is atomically sharp, terminated uniformly by a Sr/O layer. Surprisingly, the proximity-induced p-wave superconducting energy gap predicted by theory was not detected inside Ru islands. Our results suggest that the previously observed enhancement of superconductivity in this eutectic phase occurs away from rather than near the Sr2RuO4/Ru interface, where dislocations and phonon hardening were found.

UR - https://www.scopus.com/pages/publications/72049086455

U2 - 10.1103/PhysRevLett.103.247004

DO - 10.1103/PhysRevLett.103.247004

M3 - Article

AN - SCOPUS:72049086455

SN - 0031-9007

VL - 103

JO - Physical Review Letters

JF - Physical Review Letters

IS - 24

M1 - 247004

ER -

Suppression of proximity effect and the enhancement of p-wave superconductivity in the Sr2RuO4-Ru system

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