Energy gap and korringa constant in the high-temperature superconductor La1.83Sr0.17CuO4 determined by NMR

M. Lee; M. Yudkowsky; W. P. Halperin; J. Thiel; S. J. Hwu; K. R. Poeppelmeier

doi:10.1103/PhysRevB.36.2378

Energy gap and korringa constant in the high-temperature superconductor La1.83Sr0.17CuO4 determined by NMR

M. Lee^*, M. Yudkowsky, W. P. Halperin, J. Thiel, S. J. Hwu, K. R. Poeppelmeier

^*Corresponding author for this work

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

24 Scopus citations

Abstract

Polycrystalline samples of La1.83Sr0.17CuO4 were studied by pulsed nuclear-magnetic-resonance methods on the copper nucleus over a temperature range which included both normal and superconducting phases. A Korringa constant 14"1 K sec and a minimum value for the energy gap 2 kBTc=1.3"0.2 were found. A comparison of these results with the larger gap reported from infrared absorption and from tunneling experiments indicates that there is substantial anisotropy in the pairing interaction. Homogeneous line narrowing in the superconducting state was observed.

Original language	English (US)
Pages (from-to)	2378-2381
Number of pages	4
Journal	Physical Review B
Volume	36
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.36.2378
State	Published - 1987

ASJC Scopus subject areas

Condensed Matter Physics

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10.1103/PhysRevB.36.2378

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title = "Energy gap and korringa constant in the high-temperature superconductor La1.83Sr0.17CuO4 determined by NMR",

abstract = "Polycrystalline samples of La1.83Sr0.17CuO4 were studied by pulsed nuclear-magnetic-resonance methods on the copper nucleus over a temperature range which included both normal and superconducting phases. A Korringa constant 14{"}1 K sec and a minimum value for the energy gap 2 kBTc=1.3{"}0.2 were found. A comparison of these results with the larger gap reported from infrared absorption and from tunneling experiments indicates that there is substantial anisotropy in the pairing interaction. Homogeneous line narrowing in the superconducting state was observed.",

author = "M. Lee and M. Yudkowsky and Halperin, {W. P.} and J. Thiel and Hwu, {S. J.} and Poeppelmeier, {K. R.}",

year = "1987",

doi = "10.1103/PhysRevB.36.2378",

language = "English (US)",

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T1 - Energy gap and korringa constant in the high-temperature superconductor La1.83Sr0.17CuO4 determined by NMR

AU - Lee, M.

AU - Yudkowsky, M.

AU - Halperin, W. P.

AU - Thiel, J.

AU - Hwu, S. J.

AU - Poeppelmeier, K. R.

PY - 1987

Y1 - 1987

N2 - Polycrystalline samples of La1.83Sr0.17CuO4 were studied by pulsed nuclear-magnetic-resonance methods on the copper nucleus over a temperature range which included both normal and superconducting phases. A Korringa constant 14"1 K sec and a minimum value for the energy gap 2 kBTc=1.3"0.2 were found. A comparison of these results with the larger gap reported from infrared absorption and from tunneling experiments indicates that there is substantial anisotropy in the pairing interaction. Homogeneous line narrowing in the superconducting state was observed.

AB - Polycrystalline samples of La1.83Sr0.17CuO4 were studied by pulsed nuclear-magnetic-resonance methods on the copper nucleus over a temperature range which included both normal and superconducting phases. A Korringa constant 14"1 K sec and a minimum value for the energy gap 2 kBTc=1.3"0.2 were found. A comparison of these results with the larger gap reported from infrared absorption and from tunneling experiments indicates that there is substantial anisotropy in the pairing interaction. Homogeneous line narrowing in the superconducting state was observed.

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ER -

Energy gap and korringa constant in the high-temperature superconductor La1.83Sr0.17CuO4 determined by NMR

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