View in EDS PDF Full Text

Two regimes in the magnetic field response of superconducting MgB2.

Saved in:
Bibliographic Details
Title: Two regimes in the magnetic field response of superconducting MgB2.
Authors: Kohen, A.1, Giubileo, F.2 giubileo@sa.infn.it, Proslier, Th.1, Bobba, F.2, Cucolo, A. M.2, Sacks, W.1, Noat, Y.1, Troianovski, A.1, Roditchev, D.1
Source: European Physical Journal B: Condensed Matter. May2007, Vol. 57 Issue 1, p21-25. 5p. 3 Graphs.
Subjects: Magnetic fields, Superconductors, Scanning tunneling microscopy, Magnesium, Superconductivity
Abstract: Using Scanning Tunneling Microscope at low temperature we explore the superconducting phase diagram in the π-band of the two-band superconductor MgB2. In this band the peculiar shape of the local tunneling spectra and their dynamics in the magnetic field reveal the complex character of the quasiparticle density of states (DOS). The gap in the DOS is first rapidly filled with states in raising the magnetic field up to 0.5 T and then slowly approaches the normal state value: the gap is observed up to 2 T. Such a change in the DOS dynamics suggests the existence of two terms in the DOS of the π-band: a first one, reflecting an intrinsic superconductivity in the band and a second one, originating from an inter-band coupling to the σ-band. Our findings allow a deeper understanding of the unique phase diagram of MgB2. [ABSTRACT FROM AUTHOR]
Copyright of European Physical Journal B: Condensed Matter is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Links:
  – Type: pdflink
Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 25265190
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Two regimes in the magnetic field response of superconducting MgB<subscript>2</subscript>.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Kohen%2C+A%2E%22">Kohen, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Giubileo%2C+F%2E%22">Giubileo, F.</searchLink><relatesTo>2</relatesTo><i> giubileo@sa.infn.it</i><br /><searchLink fieldCode="AR" term="%22Proslier%2C+Th%2E%22">Proslier, Th.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Bobba%2C+F%2E%22">Bobba, F.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Cucolo%2C+A%2E+M%2E%22">Cucolo, A. M.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Sacks%2C+W%2E%22">Sacks, W.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Noat%2C+Y%2E%22">Noat, Y.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Troianovski%2C+A%2E%22">Troianovski, A.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Roditchev%2C+D%2E%22">Roditchev, D.</searchLink><relatesTo>1</relatesTo>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22European+Physical+Journal+B%3A+Condensed+Matter%22">European Physical Journal B: Condensed Matter</searchLink>. May2007, Vol. 57 Issue 1, p21-25. 5p. 3 Graphs.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Magnetic+fields%22">Magnetic fields</searchLink><br /><searchLink fieldCode="DE" term="%22Superconductors%22">Superconductors</searchLink><br /><searchLink fieldCode="DE" term="%22Scanning+tunneling+microscopy%22">Scanning tunneling microscopy</searchLink><br /><searchLink fieldCode="DE" term="%22Magnesium%22">Magnesium</searchLink><br /><searchLink fieldCode="DE" term="%22Superconductivity%22">Superconductivity</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Using Scanning Tunneling Microscope at low temperature we explore the superconducting phase diagram in the π-band of the two-band superconductor MgB2. In this band the peculiar shape of the local tunneling spectra and their dynamics in the magnetic field reveal the complex character of the quasiparticle density of states (DOS). The gap in the DOS is first rapidly filled with states in raising the magnetic field up to 0.5 T and then slowly approaches the normal state value: the gap is observed up to 2 T. Such a change in the DOS dynamics suggests the existence of two terms in the DOS of the π-band: a first one, reflecting an intrinsic superconductivity in the band and a second one, originating from an inter-band coupling to the σ-band. Our findings allow a deeper understanding of the unique phase diagram of MgB2. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of European Physical Journal B: Condensed Matter is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=25265190
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1140/epjb/e2007-00156-9
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 5
        StartPage: 21
    Subjects:
      – SubjectFull: Magnetic fields
        Type: general
      – SubjectFull: Superconductors
        Type: general
      – SubjectFull: Scanning tunneling microscopy
        Type: general
      – SubjectFull: Magnesium
        Type: general
      – SubjectFull: Superconductivity
        Type: general
    Titles:
      – TitleFull: Two regimes in the magnetic field response of superconducting MgB2.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Kohen, A.
      – PersonEntity:
          Name:
            NameFull: Giubileo, F.
      – PersonEntity:
          Name:
            NameFull: Proslier, Th.
      – PersonEntity:
          Name:
            NameFull: Bobba, F.
      – PersonEntity:
          Name:
            NameFull: Cucolo, A. M.
      – PersonEntity:
          Name:
            NameFull: Sacks, W.
      – PersonEntity:
          Name:
            NameFull: Noat, Y.
      – PersonEntity:
          Name:
            NameFull: Troianovski, A.
      – PersonEntity:
          Name:
            NameFull: Roditchev, D.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 05
              Text: May2007
              Type: published
              Y: 2007
          Identifiers:
            – Type: issn-print
              Value: 14346028
          Numbering:
            – Type: volume
              Value: 57
            – Type: issue
              Value: 1
          Titles:
            – TitleFull: European Physical Journal B: Condensed Matter
              Type: main
ResultId 1