Superconducting phase diagram of UPt3

S. Adenwalla; J. B. Ketterson; S. W. Lin; M. Levy; Bimal K. Sarma

doi:10.1016/0925-8388(92)90306-T

Superconducting phase diagram of UPt₃

S. Adenwalla^*, J. B. Ketterson, S. W. Lin, M. Levy, Bimal K. Sarma

^*Corresponding author for this work

Physics and Astronomy

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

1 Scopus citations

Abstract

We present ultrasonic velocity data for the heavy fermion superconductor UPt₃. UPt₃ is a strong candidate for unconventional superconductivity. Conclusive evidence for this comes from the observation of multiple superconducting phases. Earlier measurements of the phase diagram relied on a variety of different measurements on different samples. The phase boundaries obtained agreed qualitatively, but the important region near the H_c2 curve remained an open question. Our velocity measurements present the first complete phase diagram of UPt₃ based on a single measurement on a single sample. The sharp velocity signatures allow us to trace these signatures to within the width of the normal-superconducting transition. Our results indicate that there is a tetracritical point on the H_c2 curve.

Original language	English (US)
Pages (from-to)	153-159
Number of pages	7
Journal	Journal of Alloys and Compounds
Volume	181
Issue number	1-2
DOIs	https://doi.org/10.1016/0925-8388(92)90306-T
State	Published - Apr 3 1992

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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@article{e62ea949fbb6462d88eda1321edaf305,

title = "Superconducting phase diagram of UPt3",

abstract = "We present ultrasonic velocity data for the heavy fermion superconductor UPt3. UPt3 is a strong candidate for unconventional superconductivity. Conclusive evidence for this comes from the observation of multiple superconducting phases. Earlier measurements of the phase diagram relied on a variety of different measurements on different samples. The phase boundaries obtained agreed qualitatively, but the important region near the Hc2 curve remained an open question. Our velocity measurements present the first complete phase diagram of UPt3 based on a single measurement on a single sample. The sharp velocity signatures allow us to trace these signatures to within the width of the normal-superconducting transition. Our results indicate that there is a tetracritical point on the Hc2 curve.",

author = "S. Adenwalla and Ketterson, {J. B.} and Lin, {S. W.} and M. Levy and Sarma, {Bimal K.}",

note = "Funding Information: The work at UW-Mflwaukee was supported by the Office of Naval Research. The work by Northwestern was supported by the National Science Foundation under grant DMR-89-07396. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

year = "1992",

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doi = "10.1016/0925-8388(92)90306-T",

language = "English (US)",

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pages = "153--159",

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TY - JOUR

T1 - Superconducting phase diagram of UPt3

AU - Adenwalla, S.

AU - Ketterson, J. B.

AU - Lin, S. W.

AU - Levy, M.

AU - Sarma, Bimal K.

N1 - Funding Information: The work at UW-Mflwaukee was supported by the Office of Naval Research. The work by Northwestern was supported by the National Science Foundation under grant DMR-89-07396. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 1992/4/3

Y1 - 1992/4/3

N2 - We present ultrasonic velocity data for the heavy fermion superconductor UPt3. UPt3 is a strong candidate for unconventional superconductivity. Conclusive evidence for this comes from the observation of multiple superconducting phases. Earlier measurements of the phase diagram relied on a variety of different measurements on different samples. The phase boundaries obtained agreed qualitatively, but the important region near the Hc2 curve remained an open question. Our velocity measurements present the first complete phase diagram of UPt3 based on a single measurement on a single sample. The sharp velocity signatures allow us to trace these signatures to within the width of the normal-superconducting transition. Our results indicate that there is a tetracritical point on the Hc2 curve.

AB - We present ultrasonic velocity data for the heavy fermion superconductor UPt3. UPt3 is a strong candidate for unconventional superconductivity. Conclusive evidence for this comes from the observation of multiple superconducting phases. Earlier measurements of the phase diagram relied on a variety of different measurements on different samples. The phase boundaries obtained agreed qualitatively, but the important region near the Hc2 curve remained an open question. Our velocity measurements present the first complete phase diagram of UPt3 based on a single measurement on a single sample. The sharp velocity signatures allow us to trace these signatures to within the width of the normal-superconducting transition. Our results indicate that there is a tetracritical point on the Hc2 curve.

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EP - 159

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Superconducting phase diagram of UPt₃

Abstract

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