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发信人: sunzy (热气球), 信区: material
标 题: Boron Isotope Effect in Superconducting MgB2
发信站: 听涛站 (Tue Mar 6 18:28:21 2001), 转信
Boron Isotope Effect in Superconducting MgB2
S. L. Bud'ko, G. Lapertot, C. Petrovic, C. E. Cunningham, N. Anderson, and P
. C. Canfield
Ames Laboratory and Department of Physics and Astronomy, Iowa State Universi
ty, Ames, Iowa 50011
(Received 30 January 2001)
We report the preparation method of and boron isotope effect for MgB2, a new
binary intermetallic superconductor with a remarkably high superconducting
transition temperature Tc(10B) = 40.2 K. Measurements of both temperature d
ependent magnetization and specific heat reveal a 1.0 K shift in Tc between
Mg11B2 and Mg10B2. Whereas such a high transition temperature might imply ex
otic coupling mechanisms, the boron isotope effect in MgB2 is consistent wit
h the material being a phonon-mediated BCS superconductor. ?2001 The America
n Physical Society
URL: http://publish.aps.org/abstract/PRL/v86/p1877
DOI: 10.1103/PhysRevLett.86.1877
PACS: 74.70.Ad, 74.62.Bf Additional Information
View ISI's Web of Science data for this article: [ Source Abstract | Citing
Articles | Related Articles ] Physical Review Letters -- February 26, 2001 -- Volume 86, Issue 9 pp. 1877
-1880
Full Text: [ PDF (116 kB) GZipped PS Order Document ]
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Boron Isotope Effect in Superconducting MgB2
S. L. Bud'ko, G. Lapertot, C. Petrovic, C. E. Cunningham, N. Anderson, and P
. C. Canfield
Ames Laboratory and Department of Physics and Astronomy, Iowa State Universi
ty, Ames, Iowa 50011
(Received 30 January 2001)
We report the preparation method of and boron isotope effect for MgB2, a new
binary intermetallic superconductor with a remarkably high superconducting
transition temperature Tc(10B) = 40.2 K. Measurements of both temperature d
ependent magnetization and specific heat reveal a 1.0 K shift in Tc between
Mg11B2 and Mg10B2. Whereas such a high transition temperature might imply ex
otic coupling mechanisms, the boron isotope effect in MgB2 is consistent wit
h the material being a phonon-mediated BCS superconductor. ?2001 The America
n Physical Society
URL: http://publish.aps.org/abstract/PRL/v86/p1877
DOI: 10.1103/PhysRevLett.86.1877
PACS: 74.70.Ad, 74.62.Bf Additional Information
View ISI's Web of Science data for this article: [ Source Abstract | Citing
Articles | Related Articles ]
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