Enhancement of Irreversibility Field in Carbon-substituted MgB_2 Single Crystals

Access this Article

Search this Article

Author(s)

Abstract

We report on a detailed study of the irreversibility field <I>H</I><SUB>irr</SUB> of single crystals of Mg(B<SUB>1−<I>x</I></SUB>C<I><SUB>x</SUB></I>)<SUB>2</SUB> (<I>x</I>=0, 2, 3.5, 5 and 7.5%) in strong magnetic fields of up to 40 T. Highly sensitive torque measurements revealed that <I>H</I><SUB>irr</SUB> is greatly enhanced by a factor of two (μ<SUB>0</SUB><I>H</I><SUB>irr</SUB>(0)\\simeq33 T with <I>x</I>=5%) by carbon substitution compared with that of the pristine MgB<SUB>2</SUB>, owing to a reduction in in-plane coherence length. We also observed the temperature-dependent <I>H</I><SUB>irr</SUB> anisotropy for all carbon contents. This strongly suggests that the two-gap superconductivity of MgB<SUB>2</SUB> is less influenced by a small amount of carbon substitution. We discuss these results by focusing on the impact of carrier doping and impurity scattering on a two-gap superconductor.

Journal

  • Journal of the Physical Society of Japan

    Journal of the Physical Society of Japan 73(8), 2065-2068, 2004-08-15

    The Physical Society of Japan (JPS)

References:  33

  • <no title>

    NAGAMATSU J.

    Nature 410, 63, 2001

    Cited by (76)

  • <no title>

    IAVARONE M.

    Phys. Rev. Lett. 89, 187002, 2002

    Cited by (4)

  • <no title>

    ESKILDSEN M. R.

    Phys. Rev. Lett. 89, 187003, 2002

    Cited by (2)

  • <no title>

    ANGST M.

    Phys. Rev. Lett. 88, 167004, 2002

    Cited by (5)

  • <no title>

    QUILTY J. M.

    Phys. Rev. Lett. 90, 207006, 2003

    Cited by (1)

  • <no title>

    TSUDA S.

    Phys. Rev. Lett. 91, 127001, 2003

    Cited by (3)

  • <no title>

    SOUMA S.

    Nature 423, 65, 2003

    Cited by (6)

  • <no title>

    KORTUS J.

    Phys. Rev. Lett. 86, 4656, 2001

    Cited by (18)

  • <no title>

    MAZIN I. I.

    Phys. Rev. Lett. 89, 107002, 2002

    Cited by (2)

  • <no title>

    LEE S.

    Physica C 397, 7, 2003

    Cited by (2)

  • <no title>

    GOLUBOV A. A.

    Phys. Rev. B 55, 15146, 1997

    Cited by (3)

  • <no title>

    OHASHI Y.

    J. Phys. Soc. Jpn. 71, 1978, 2002

    Cited by (1)

  • <no title>

    GUREVICH A.

    Supercond. Sci. Technol. 17, 278, 2004

    Cited by (1)

  • <no title>

    MASUI T.

    Phys. Rev. B 70, 024504, 2004

    Cited by (1)

  • <no title>

    ZEHETMAYER M.

    Phys. Rev. B 66, 052505, 2002

    Cited by (2)

  • <no title>

    ORLANDO T. P.

    Phys. Rev. B 19, 4545, 1979

    Cited by (5)

  • <no title>

    ELTSEV Yu.

    Phys. Rev. B 65, 140501, 2002

    Cited by (1)

  • <no title>

    LYARD L.

    Phys. Rev. B 66, 180502, 2002

    Cited by (2)

  • <no title>

    MIRANOVIC P.

    J. Phys. Soc. Jpn. 72, 221, 2003

    Cited by (4)

  • <no title>

    DAHM T.

    Phys. Rev. Lett. 91, 017001, 2003

    Cited by (3)

  • <no title>

    SZABO P.

    Phys. Rev. Lett. 87, 137005, 2001

    Cited by (10)

  • <no title>

    BOUQUET F.

    Phys. Rev. Lett. 87, 047001, 2001

    Cited by (16)

  • <no title>

    RIBEIRO R. A.

    Physica C 384, 227, 2003

    Cited by (1)

  • <no title>

    SINGH P. P.

    Solid State Commun. 127, 271, 2003

    Cited by (1)

  • <no title>

    OHMICHI E.

    Rev. Sci. Instrum. 73, 3022, 2002

    Cited by (6)

  • <no title>

    ANGST M.

    Phys. Rev. B 67, 012502, 2003

    Cited by (1)

  • <no title>

    PISSAS M.

    Phys. Rev. Lett. 89, 097002, 2002

    Cited by (1)

  • <no title>

    WELP U.

    Physica C 385, 154, 2003

    Cited by (1)

  • <no title>

    MASUI T.

    Physica C 383, 299, 2003

    Cited by (1)

  • <no title>

    BOUQUET F.

    Phys. Rev. Lett. 89, 257001, 2002

    Cited by (5)

  • <no title>

    SOLOGUBENKO A. V.

    Phys. Rev. B 65, 180505(R), 2002

    Cited by (2)

  • <no title>

    GUREVICH A.

    Phys. Rev. B 67, 184515, 2003

    Cited by (5)

  • Intralayer Carbon Substitution in the MgB_2 Superconductor

    Takenobu T. , Ito T. , H. Chi Dam , Prassides K. , Iwasa Y.

    Physical Review B 64(13), 134513-1-134513-3, 2001-09-11

    IR  Cited by (4)

Cited by:  4

Codes

  • NII Article ID (NAID)
    110001954935
  • NII NACSIS-CAT ID (NCID)
    AA00704814
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    00319015
  • NDL Article ID
    7051724
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A404
  • Data Source
    CJP  CJPref  NDL  NII-ELS  J-STAGE 
Page Top