Spatial variations of the superconductor gap structure in MgB2/Al composite

A Sharoni; O Millo; Gregory Leitus; Shimon Reich

doi:10.1088/0953-8984/13/22/109

Spatial variations of the superconductor gap structure in MgB₂/Al composite

A Sharoni, O Millo, Gregory Leitus, Shimon Reich

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

22 Citations (Scopus)

Abstract

Composites consisting of MgB₂ and A1, 11% by volume, undergo a transition-superconductivity onset at T_C = 38 K, close to the value reported for pure MgB₂. The transition appears to have broadened, as determined by both magnetic and transport measurements, possibly due to the proximity effect and disorder. Spatially resolved tunnelling spectroscopy at 4.2 K shows a distribution of gap structures, from Bardeen-Cooper-Schrieffer-like spectra with 2Δ/k_BT_C = 3.2 to spectra that are typical for proximity superconductors.

Original language	English
Pages (from-to)	L503-L508
Journal	Journal Of Physics-Condensed Matter
Volume	13
Issue number	22
DOIs	https://doi.org/10.1088/0953-8984/13/22/109
Publication status	Published - 4 Jun 2001

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics

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10.1088/0953-8984/13/22/109

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title = "Spatial variations of the superconductor gap structure in MgB2/Al composite",

abstract = "Composites consisting of MgB2 and A1, 11\% by volume, undergo a transition-superconductivity onset at TC = 38 K, close to the value reported for pure MgB2. The transition appears to have broadened, as determined by both magnetic and transport measurements, possibly due to the proximity effect and disorder. Spatially resolved tunnelling spectroscopy at 4.2 K shows a distribution of gap structures, from Bardeen-Cooper-Schrieffer-like spectra with 2Δ/kBTC = 3.2 to spectra that are typical for proximity superconductors.",

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T1 - Spatial variations of the superconductor gap structure in MgB2/Al composite

AU - Sharoni, A

AU - Millo, O

AU - Leitus, Gregory

AU - Reich, Shimon

PY - 2001/6/4

Y1 - 2001/6/4

N2 - Composites consisting of MgB2 and A1, 11% by volume, undergo a transition-superconductivity onset at TC = 38 K, close to the value reported for pure MgB2. The transition appears to have broadened, as determined by both magnetic and transport measurements, possibly due to the proximity effect and disorder. Spatially resolved tunnelling spectroscopy at 4.2 K shows a distribution of gap structures, from Bardeen-Cooper-Schrieffer-like spectra with 2Δ/kBTC = 3.2 to spectra that are typical for proximity superconductors.

AB - Composites consisting of MgB2 and A1, 11% by volume, undergo a transition-superconductivity onset at TC = 38 K, close to the value reported for pure MgB2. The transition appears to have broadened, as determined by both magnetic and transport measurements, possibly due to the proximity effect and disorder. Spatially resolved tunnelling spectroscopy at 4.2 K shows a distribution of gap structures, from Bardeen-Cooper-Schrieffer-like spectra with 2Δ/kBTC = 3.2 to spectra that are typical for proximity superconductors.

UR - https://www.scopus.com/pages/publications/0035805883

U2 - 10.1088/0953-8984/13/22/109

DO - 10.1088/0953-8984/13/22/109

M3 - Letter

SN - 0953-8984

VL - 13

SP - L503-L508

JO - Journal Of Physics-Condensed Matter

JF - Journal Of Physics-Condensed Matter

IS - 22

ER -

Spatial variations of the superconductor gap structure in MgB₂/Al composite

Abstract

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