Complicated nature of the gap in MgB2: Magnetic-field-dependent optical studies

H. J. Lee; J. H. Jung; K. W. Kim; M. W. Kim; T. W. Noh; Y. J. Wang; W. N. Kang; Eun Mi Choi; Hyeong Jin Kim; Sung Ik Lee

doi:10.1103/PhysRevB.65.224519

Complicated nature of the gap in MgB₂: Magnetic-field-dependent optical studies

H. J. Lee
, J. H. Jung
, K. W. Kim
, M. W. Kim
, T. W. Noh
, Y. J. Wang
, W. N. Kang
, Eun Mi Choi
, Hyeong Jin Kim
, Sung Ik Lee

Department of Physics

Seoul National University
Florida State University
Pohang University of Science and Technology

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

12 Scopus citations

Abstract

We investigated the magnetic-field-(H) dependent optical conductivity spectra of MgB₂ thin film in the far-infrared region. The H dependences can be explained by the increase of normal metallic regions embedded in the superconducting background. The area fraction of the normal metallic region increases rather quickly at low field, but slowly at high field. It follows neither H nor, H^1/2 dependences. The results suggest the complicated nature of the superconducting gap in MgB₂.

Original language	English
Article number	224519
Pages (from-to)	2245191-2245194
Number of pages	4
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.65.224519
State	Published - 2002.06.1

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10.1103/PhysRevB.65.224519

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@article{f7a0a526eb19458f8494579fe1ac53fe,

title = "Complicated nature of the gap in MgB2: Magnetic-field-dependent optical studies",

abstract = "We investigated the magnetic-field-(H) dependent optical conductivity spectra of MgB2 thin film in the far-infrared region. The H dependences can be explained by the increase of normal metallic regions embedded in the superconducting background. The area fraction of the normal metallic region increases rather quickly at low field, but slowly at high field. It follows neither H nor, H1/2 dependences. The results suggest the complicated nature of the superconducting gap in MgB2.",

author = "Lee, \{H. J.\} and Jung, \{J. H.\} and Kim, \{K. W.\} and Kim, \{M. W.\} and Noh, \{T. W.\} and Wang, \{Y. J.\} and Kang, \{W. N.\} and Choi, \{Eun Mi\} and Kim, \{Hyeong Jin\} and Lee, \{Sung Ik\}",

year = "2002",

month = jun,

day = "1",

doi = "10.1103/PhysRevB.65.224519",

language = "English",

volume = "65",

pages = "2245191--2245194",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

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TY - JOUR

T1 - Complicated nature of the gap in MgB2

T2 - Magnetic-field-dependent optical studies

AU - Lee, H. J.

AU - Jung, J. H.

AU - Kim, K. W.

AU - Kim, M. W.

AU - Noh, T. W.

AU - Wang, Y. J.

AU - Kang, W. N.

AU - Choi, Eun Mi

AU - Kim, Hyeong Jin

AU - Lee, Sung Ik

PY - 2002/6/1

Y1 - 2002/6/1

N2 - We investigated the magnetic-field-(H) dependent optical conductivity spectra of MgB2 thin film in the far-infrared region. The H dependences can be explained by the increase of normal metallic regions embedded in the superconducting background. The area fraction of the normal metallic region increases rather quickly at low field, but slowly at high field. It follows neither H nor, H1/2 dependences. The results suggest the complicated nature of the superconducting gap in MgB2.

AB - We investigated the magnetic-field-(H) dependent optical conductivity spectra of MgB2 thin film in the far-infrared region. The H dependences can be explained by the increase of normal metallic regions embedded in the superconducting background. The area fraction of the normal metallic region increases rather quickly at low field, but slowly at high field. It follows neither H nor, H1/2 dependences. The results suggest the complicated nature of the superconducting gap in MgB2.

UR - https://www.scopus.com/pages/publications/0036612562

U2 - 10.1103/PhysRevB.65.224519

DO - 10.1103/PhysRevB.65.224519

M3 - Journal article

AN - SCOPUS:0036612562

SN - 1098-0121

VL - 65

SP - 2245191

EP - 2245194

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 22

M1 - 224519

ER -

Complicated nature of the gap in MgB₂: Magnetic-field-dependent optical studies

Abstract

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