Hysteresis in ultrasonic attenuation in UPt3 in low magnetic fields

A. Schenstrom; M. F. Xu; Y. Hong; M. Levy; Bimal K. Sarma; S. Adenwalla; Z. Zhao; J. B. Ketterson; D. G. Hinks

doi:10.1016/0022-5088(89)90511-0

Hysteresis in ultrasonic attenuation in UPt₃ in low magnetic fields

A. Schenstrom^*, M. F. Xu, Y. Hong, M. Levy, Bimal K. Sarma, S. Adenwalla, Z. Zhao, J. B. Ketterson, D. G. Hinks

^*Corresponding author for this work

Physics and Astronomy

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

1 Scopus citations

Abstract

Ultrasonic measurements on the heavy fermion superconductor UPt₃ indicate evidence of the possibility of two or more superconducting phases in a magnetic field. At low fields there is a large hysteresis in the attenuation which was interpreted by Muller et al. as a metastable phase. We report on similar measurements, where in addition to a hysteresis in the attenuation there is an associated hysteretic temperature change. We believe the hysteresis in attenuation to be the result of a temperature increase due to flux jumps. A lower critical field of the order of 10 mT is estimated.

Original language	English (US)
Pages (from-to)	353-356
Number of pages	4
Journal	Journal of The Less-Common Metals
Volume	149
Issue number	C
DOIs	https://doi.org/10.1016/0022-5088(89)90511-0
State	Published - Apr 15 1989

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Engineering(all)

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10.1016/0022-5088(89)90511-0

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@article{d745d1ccca8542fbb3ad5a5e5e70b051,

title = "Hysteresis in ultrasonic attenuation in UPt3 in low magnetic fields",

abstract = "Ultrasonic measurements on the heavy fermion superconductor UPt3 indicate evidence of the possibility of two or more superconducting phases in a magnetic field. At low fields there is a large hysteresis in the attenuation which was interpreted by Muller et al. as a metastable phase. We report on similar measurements, where in addition to a hysteresis in the attenuation there is an associated hysteretic temperature change. We believe the hysteresis in attenuation to be the result of a temperature increase due to flux jumps. A lower critical field of the order of 10 mT is estimated.",

author = "A. Schenstrom and Xu, {M. F.} and Y. Hong and M. Levy and Sarma, {Bimal K.} and S. Adenwalla and Z. Zhao and Ketterson, {J. B.} and Hinks, {D. G.}",

note = "Funding Information: This work was supported by ONR Grant N00014-88-K0046 at the University of Wisconsin-Milwaukee and NSF Grant DMR-S6-02857 at Northwestern University.",

year = "1989",

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doi = "10.1016/0022-5088(89)90511-0",

language = "English (US)",

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TY - JOUR

T1 - Hysteresis in ultrasonic attenuation in UPt3 in low magnetic fields

AU - Schenstrom, A.

AU - Xu, M. F.

AU - Hong, Y.

AU - Levy, M.

AU - Sarma, Bimal K.

AU - Adenwalla, S.

AU - Zhao, Z.

AU - Ketterson, J. B.

AU - Hinks, D. G.

N1 - Funding Information: This work was supported by ONR Grant N00014-88-K0046 at the University of Wisconsin-Milwaukee and NSF Grant DMR-S6-02857 at Northwestern University.

PY - 1989/4/15

Y1 - 1989/4/15

N2 - Ultrasonic measurements on the heavy fermion superconductor UPt3 indicate evidence of the possibility of two or more superconducting phases in a magnetic field. At low fields there is a large hysteresis in the attenuation which was interpreted by Muller et al. as a metastable phase. We report on similar measurements, where in addition to a hysteresis in the attenuation there is an associated hysteretic temperature change. We believe the hysteresis in attenuation to be the result of a temperature increase due to flux jumps. A lower critical field of the order of 10 mT is estimated.

AB - Ultrasonic measurements on the heavy fermion superconductor UPt3 indicate evidence of the possibility of two or more superconducting phases in a magnetic field. At low fields there is a large hysteresis in the attenuation which was interpreted by Muller et al. as a metastable phase. We report on similar measurements, where in addition to a hysteresis in the attenuation there is an associated hysteretic temperature change. We believe the hysteresis in attenuation to be the result of a temperature increase due to flux jumps. A lower critical field of the order of 10 mT is estimated.

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JO - Journal of The Less-Common Metals

JF - Journal of The Less-Common Metals

IS - C

ER -

Hysteresis in ultrasonic attenuation in UPt₃ in low magnetic fields

Abstract

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