Point-contact spectroscopy of MgB2 in high magnetic fields

P. Szabó; P. Samuely; J. Kačmarčik; T. Klein; J. Marcus; A. G.M. Jansen

doi:10.1016/S0921-4534(02)02687-4

Point-contact spectroscopy of MgB₂ in high magnetic fields

P. Szabó
, P. Samuely
, J. Kačmarčik
, T. Klein
, J. Marcus
, A. G.M. Jansen

École Polytechnique

Research output: Contribution to journal › Conference article › peer-review

Abstract

The point-contact spectroscopy data reveal the existence of two distinct superconducting energy gaps in the Andreev reflection of quasiparticles between MgB₂ and a copper counterelectrode. Above the gap energies reproducible nonlinearities are observed at the characteristic phonon energies of MgB₂. The strength and position of the observed nonlinearities due to the electron-phonon interaction do not reveal any renormalization when the point contact undergoes the transition from the superconducting to the normal state.

Original language	English
Pages (from-to)	145-146
Number of pages	2
Journal	Physica C: Superconductivity and its Applications
Volume	388-389
DOIs	https://doi.org/10.1016/S0921-4534(02)02687-4
Publication status	Published - 1 Jan 2003
Event	proceedings of the 23rd international conference on low temper - Hiroshima, Japan Duration: 20 Aug 2002 → 27 Aug 2002

Keywords

Electron-phonon interaction
MgB
Point-contact spectroscopy
Two-band superconductivity

Access to Document

10.1016/S0921-4534(02)02687-4

Cite this

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title = "Point-contact spectroscopy of MgB2 in high magnetic fields",

abstract = "The point-contact spectroscopy data reveal the existence of two distinct superconducting energy gaps in the Andreev reflection of quasiparticles between MgB2 and a copper counterelectrode. Above the gap energies reproducible nonlinearities are observed at the characteristic phonon energies of MgB2. The strength and position of the observed nonlinearities due to the electron-phonon interaction do not reveal any renormalization when the point contact undergoes the transition from the superconducting to the normal state.",

keywords = "Electron-phonon interaction, MgB, Point-contact spectroscopy, Two-band superconductivity",

author = "P. Szab{\'o} and P. Samuely and J. Ka{\v c}mar{\v c}ik and T. Klein and J. Marcus and Jansen, \{A. G.M.\}",

year = "2003",

month = jan,

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doi = "10.1016/S0921-4534(02)02687-4",

language = "English",

volume = "388-389",

pages = "145--146",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

note = "proceedings of the 23rd international conference on low temper ; Conference date: 20-08-2002 Through 27-08-2002",

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TY - JOUR

T1 - Point-contact spectroscopy of MgB2 in high magnetic fields

AU - Szabó, P.

AU - Samuely, P.

AU - Kačmarčik, J.

AU - Klein, T.

AU - Marcus, J.

AU - Jansen, A. G.M.

PY - 2003/1/1

Y1 - 2003/1/1

N2 - The point-contact spectroscopy data reveal the existence of two distinct superconducting energy gaps in the Andreev reflection of quasiparticles between MgB2 and a copper counterelectrode. Above the gap energies reproducible nonlinearities are observed at the characteristic phonon energies of MgB2. The strength and position of the observed nonlinearities due to the electron-phonon interaction do not reveal any renormalization when the point contact undergoes the transition from the superconducting to the normal state.

AB - The point-contact spectroscopy data reveal the existence of two distinct superconducting energy gaps in the Andreev reflection of quasiparticles between MgB2 and a copper counterelectrode. Above the gap energies reproducible nonlinearities are observed at the characteristic phonon energies of MgB2. The strength and position of the observed nonlinearities due to the electron-phonon interaction do not reveal any renormalization when the point contact undergoes the transition from the superconducting to the normal state.

KW - Electron-phonon interaction

KW - MgB

KW - Point-contact spectroscopy

KW - Two-band superconductivity

U2 - 10.1016/S0921-4534(02)02687-4

DO - 10.1016/S0921-4534(02)02687-4

M3 - Conference article

AN - SCOPUS:0038188587

SN - 0921-4534

VL - 388-389

SP - 145

EP - 146

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

T2 - proceedings of the 23rd international conference on low temper

Y2 - 20 August 2002 through 27 August 2002