Microwave complex impedance measurements on the heavy fermion superconductor UBe13

S. W. Lin; C. T. Lin; Bimal K. Sarma; G. R. Stewart; J. B. Ketterson

doi:10.1016/0375-9601(96)00316-7

Microwave complex impedance measurements on the heavy fermion superconductor UBe₁₃

S. W. Lin^*, C. T. Lin, Bimal K. Sarma, G. R. Stewart, J. B. Ketterson

^*Corresponding author for this work

MRC - Materials Research Center

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

3 Scopus citations

Abstract

The complex microwave impedance in the frequency range of ∼ 8-36 GHz was measured in the superconducting state of a well-characterized heavy fermion single crystal of UBe₁₃. This microwave photon energy ranges roughly from 15% to 60% of the zero-temperature (BCS) energy gap and is higher than previous measurements. Large changes are observed in the complex impedance when the sample is cooled below T_c for all frequencies measured. The surface impedance cannot be described by the Mattis-Bardeen theory in the dirty limit for a conventional superconductor.

Original language	English (US)
Pages (from-to)	161-166
Number of pages	6
Journal	Physics Letters, Section A: General, Atomic and Solid State Physics
Volume	217
Issue number	2-3
DOIs	https://doi.org/10.1016/0375-9601(96)00316-7
State	Published - Jul 8 1996

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Microwave complex impedance measurements on the heavy fermion superconductor UBe13",

abstract = "The complex microwave impedance in the frequency range of ∼ 8-36 GHz was measured in the superconducting state of a well-characterized heavy fermion single crystal of UBe13. This microwave photon energy ranges roughly from 15% to 60% of the zero-temperature (BCS) energy gap and is higher than previous measurements. Large changes are observed in the complex impedance when the sample is cooled below Tc for all frequencies measured. The surface impedance cannot be described by the Mattis-Bardeen theory in the dirty limit for a conventional superconductor.",

author = "Lin, {S. W.} and Lin, {C. T.} and Sarma, {Bimal K.} and Stewart, {G. R.} and Ketterson, {J. B.}",

note = "Funding Information: We would like to thank M. Meisel, S.-K. Yip and J. Sauls for stimulating interactions. This research at Northwestern is supported by NSF through the Material Research Center at Northwestern (DMR91-20521) and by NSF grant DMR93-09061.",

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T1 - Microwave complex impedance measurements on the heavy fermion superconductor UBe13

AU - Lin, S. W.

AU - Lin, C. T.

AU - Sarma, Bimal K.

AU - Stewart, G. R.

AU - Ketterson, J. B.

N1 - Funding Information: We would like to thank M. Meisel, S.-K. Yip and J. Sauls for stimulating interactions. This research at Northwestern is supported by NSF through the Material Research Center at Northwestern (DMR91-20521) and by NSF grant DMR93-09061.

PY - 1996/7/8

Y1 - 1996/7/8

N2 - The complex microwave impedance in the frequency range of ∼ 8-36 GHz was measured in the superconducting state of a well-characterized heavy fermion single crystal of UBe13. This microwave photon energy ranges roughly from 15% to 60% of the zero-temperature (BCS) energy gap and is higher than previous measurements. Large changes are observed in the complex impedance when the sample is cooled below Tc for all frequencies measured. The surface impedance cannot be described by the Mattis-Bardeen theory in the dirty limit for a conventional superconductor.

AB - The complex microwave impedance in the frequency range of ∼ 8-36 GHz was measured in the superconducting state of a well-characterized heavy fermion single crystal of UBe13. This microwave photon energy ranges roughly from 15% to 60% of the zero-temperature (BCS) energy gap and is higher than previous measurements. Large changes are observed in the complex impedance when the sample is cooled below Tc for all frequencies measured. The surface impedance cannot be described by the Mattis-Bardeen theory in the dirty limit for a conventional superconductor.

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Microwave complex impedance measurements on the heavy fermion superconductor UBe₁₃

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