Optical conductivity and penetration depth in MgB2 -: art. no. 097003

被引：71

作者：

Pronin, AV

Pimenov, A ^{[1
]}

Loidl, A

Krasnosvobodtsev, SI

机构：

[1] Univ Augsburg, EKM, D-86135 Augsburg, Germany

[2] Russian Acad Sci, Inst Gen Phys, Moscow 119991, Russia

[3] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 117924, Russia

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 87卷 / 09期

关键词：

D O I：

10.1103/PhysRevLett.87.097003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The complex conductivity of a MgB2 film has been investigated in the frequency range 4 < v < 30 cm(-1) and for temperatures 2.7 < T < 300 K. The overall temperature dependence of both components of the complex conductivity is reminiscent of BCS-type behavior, although a detailed analysis reveals a number of discrepancies. A peak in the temperature dependence of the real part of the conductivity is detected for frequencies below 9 cm(-1). The superconducting penetration depth follows a T-2 behavior at low temperatures.

引用

页码：970031 / 970034

页数：4

共 30 条

[1] Superconductivity of MgB2: Covalent bonds driven metallic [J].

An, J.M., 2001, American Institute of Physics Inc. (86)

[2]

BASCONES E, CONDMAT0103190

[3]

BLANK DHA, CONDMAT0103543

[4]

Bonn D.A., 1996, PHYS PROPERTIES HIGH

[5] Boron isotope effect in superconducting MgB2 [J].

Bud'ko, SL ;

Lapertot, G ;

Petrovic, C ;

Cunningham, CE ;

Anderson, N ;

Canfield, PC .

PHYSICAL REVIEW LETTERS, 2001, 86 (09) :1877-1880

[6]

CHRISTEN HM, CONDMAT0103478

[7] Optical measurements of the superconducting gap in MgB2 [J].

Gorshunov, B ;

Kuntscher, CA ;

Haas, P ;

Dressel, M ;

Mena, FP ;

Kuz'menko, AB ;

van der Marel, D ;

Muranaka, T ;

Akimitsu, J .

EUROPEAN PHYSICAL JOURNAL B, 2001, 21 (02) :159-161

[8]

HIRSCH JE, CONDMAT0102479

[9]

JUNG JK, CONDMAT0105180

[10] MgB2 superconducting thin films with a transition temperature of 39 kelvin [J].

Kang, WN ;

Kim, HJ ;

Choi, EM ;

Jung, CU ;

Lee, SL .

SCIENCE, 2001, 292 (5521) :1521-1523

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