Probing the limits of superconductivity

D. R. Strachan; M. C. Sullivan; C. J. Lobb

doi:10.1117/12.452479

Probing the limits of superconductivity

D. R. Strachan
, M. C. Sullivan
, C. J. Lobb

Physics And Astronomy

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

7 Scopus citations

Abstract

DC voltage versus current measurements of superconductors in a magnetic field are widely interpreted to imply that a phase transition occurs into a state of zero resistance. We show that the widely-used scaling function approach has a problem: Good data collapse occurs for a wide range of critical exponents and temperatures. This strongly suggests that agreement with scaling alone does not prove the existence of the phase transition. We discuss a criterion to determine if the scaling analysis is valid, and find that all of the data in the literature that we have analyzed fail to meet this criterion. Our data on YBCO films, and other data that we have analyzed, are more consistent with the occurrence of small but non-zero resistance at low temperature.

Original language	English
Pages (from-to)	65-77
Number of pages	13
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	4811
DOIs	https://doi.org/10.1117/12.452479
State	Published - 2002
Event	Superconducting and Related Oxides: Physics and Nanoengineering V - Seattle, WA, United States Duration: Jul 8 2002 → Jul 11 2002

Funding

Funders	Funder number
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China	9732800
U.S. Department of Energy Chinese Academy of Sciences Guangzhou Municipal Science and Technology Project Oak Ridge National Laboratory Extreme Science and Engineering Discovery Environment National Science Foundation National Energy Research Scientific Computing Center National Natural Science Foundation of China

Keywords

Bose glass
Critical exponents
Phase transitions
Scaling
Superconductivity
Vortex glass

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

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10.1117/12.452479

Cite this

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title = "Probing the limits of superconductivity",

abstract = "DC voltage versus current measurements of superconductors in a magnetic field are widely interpreted to imply that a phase transition occurs into a state of zero resistance. We show that the widely-used scaling function approach has a problem: Good data collapse occurs for a wide range of critical exponents and temperatures. This strongly suggests that agreement with scaling alone does not prove the existence of the phase transition. We discuss a criterion to determine if the scaling analysis is valid, and find that all of the data in the literature that we have analyzed fail to meet this criterion. Our data on YBCO films, and other data that we have analyzed, are more consistent with the occurrence of small but non-zero resistance at low temperature.",

keywords = "Bose glass, Critical exponents, Phase transitions, Scaling, Superconductivity, Vortex glass",

author = "Strachan, \{D. R.\} and Sullivan, \{M. C.\} and Lobb, \{C. J.\}",

year = "2002",

doi = "10.1117/12.452479",

language = "English",

volume = "4811",

pages = "65--77",

note = "Superconducting and Related Oxides: Physics and Nanoengineering V ; Conference date: 08-07-2002 Through 11-07-2002",

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TY - JOUR

T1 - Probing the limits of superconductivity

AU - Strachan, D. R.

AU - Sullivan, M. C.

AU - Lobb, C. J.

PY - 2002

Y1 - 2002

N2 - DC voltage versus current measurements of superconductors in a magnetic field are widely interpreted to imply that a phase transition occurs into a state of zero resistance. We show that the widely-used scaling function approach has a problem: Good data collapse occurs for a wide range of critical exponents and temperatures. This strongly suggests that agreement with scaling alone does not prove the existence of the phase transition. We discuss a criterion to determine if the scaling analysis is valid, and find that all of the data in the literature that we have analyzed fail to meet this criterion. Our data on YBCO films, and other data that we have analyzed, are more consistent with the occurrence of small but non-zero resistance at low temperature.

AB - DC voltage versus current measurements of superconductors in a magnetic field are widely interpreted to imply that a phase transition occurs into a state of zero resistance. We show that the widely-used scaling function approach has a problem: Good data collapse occurs for a wide range of critical exponents and temperatures. This strongly suggests that agreement with scaling alone does not prove the existence of the phase transition. We discuss a criterion to determine if the scaling analysis is valid, and find that all of the data in the literature that we have analyzed fail to meet this criterion. Our data on YBCO films, and other data that we have analyzed, are more consistent with the occurrence of small but non-zero resistance at low temperature.

KW - Bose glass

KW - Critical exponents

KW - Phase transitions

KW - Scaling

KW - Superconductivity

KW - Vortex glass

UR - https://www.scopus.com/pages/publications/0036990224

UR - https://www.scopus.com/pages/publications/0036990224#tab=citedBy

U2 - 10.1117/12.452479

DO - 10.1117/12.452479

M3 - Conference article

AN - SCOPUS:0036990224

SN - 0277-786X

VL - 4811

SP - 65

EP - 77

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Superconducting and Related Oxides: Physics and Nanoengineering V

Y2 - 8 July 2002 through 11 July 2002

ER -

Probing the limits of superconductivity

Abstract

Funding

Keywords

ASJC Scopus subject areas

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