Vacuum tunneling spectroscopy of thin film and bulk polycrystalline superconductors

K. W. Ng; Z. G. Khim; Danny P. Shum; E. L. Wolf

doi:10.1016/0039-6028(87)90139-7

Vacuum tunneling spectroscopy of thin film and bulk polycrystalline superconductors

K. W. Ng, Z. G. Khim, Danny P. Shum, E. L. Wolf

Applied Physics

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

Abstract

The "squeezable junction" method of Moreland and Hansma has been applied to study the superconducting energy gap of co-sputtered MoRe films and of arc melted and annealed polycrystals of LiTi₂O₄, with T_c = 11.3 K. The energy gap of LiTi₂O₄ is determined to be 1.95 ± 0.03 mV corresponding to 2Δ k_BT>_c = 4.00 ± 0.06, making this metal a strong coupling superconductor.

Original language	English (US)
Pages (from-to)	37-45
Number of pages	9
Journal	Surface Science
Volume	181
Issue number	1-2
DOIs	https://doi.org/10.1016/0039-6028(87)90139-7
State	Published - Mar 1 1987

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

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10.1016/0039-6028(87)90139-7

Cite this

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title = "Vacuum tunneling spectroscopy of thin film and bulk polycrystalline superconductors",

abstract = "The {"}squeezable junction{"} method of Moreland and Hansma has been applied to study the superconducting energy gap of co-sputtered MoRe films and of arc melted and annealed polycrystals of LiTi2O4, with Tc = 11.3 K. The energy gap of LiTi2O4 is determined to be 1.95 ± 0.03 mV corresponding to 2Δ kBT>c = 4.00 ± 0.06, making this metal a strong coupling superconductor.",

author = "Ng, {K. W.} and Khim, {Z. G.} and Shum, {Danny P.} and Wolf, {E. L.}",

note = "Funding Information: {\textquoteright} Present address: Department of Physics, University of Texas, Austin, TX 78712, USA. {\textquoteright} Permanent address: Department of Physics, Seoul Nationai University, Seoul, Korea. s Permanent address: Department of Physics, Polytechnic University, Brooklyn, NY 11201, USA. {\textquoteright} Operated for the US Department of Energy by Iowa State University under contract No. W-7405-Eng-82.",

year = "1987",

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doi = "10.1016/0039-6028(87)90139-7",

language = "English (US)",

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T1 - Vacuum tunneling spectroscopy of thin film and bulk polycrystalline superconductors

AU - Ng, K. W.

AU - Khim, Z. G.

AU - Shum, Danny P.

AU - Wolf, E. L.

N1 - Funding Information: ’ Present address: Department of Physics, University of Texas, Austin, TX 78712, USA. ’ Permanent address: Department of Physics, Seoul Nationai University, Seoul, Korea. s Permanent address: Department of Physics, Polytechnic University, Brooklyn, NY 11201, USA. ’ Operated for the US Department of Energy by Iowa State University under contract No. W-7405-Eng-82.

PY - 1987/3/1

Y1 - 1987/3/1

N2 - The "squeezable junction" method of Moreland and Hansma has been applied to study the superconducting energy gap of co-sputtered MoRe films and of arc melted and annealed polycrystals of LiTi2O4, with Tc = 11.3 K. The energy gap of LiTi2O4 is determined to be 1.95 ± 0.03 mV corresponding to 2Δ kBT>c = 4.00 ± 0.06, making this metal a strong coupling superconductor.

AB - The "squeezable junction" method of Moreland and Hansma has been applied to study the superconducting energy gap of co-sputtered MoRe films and of arc melted and annealed polycrystals of LiTi2O4, with Tc = 11.3 K. The energy gap of LiTi2O4 is determined to be 1.95 ± 0.03 mV corresponding to 2Δ kBT>c = 4.00 ± 0.06, making this metal a strong coupling superconductor.

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Vacuum tunneling spectroscopy of thin film and bulk polycrystalline superconductors

Abstract

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