Damping of the de Haas-van Alphen oscillations in the superconducting state of MgB2 -: art. no. 144501

被引：15
作者：
Fletcher, JD
Carrington, A
Kazakov, SM
Karpinski, J
机构：
[1] Univ Bristol, HH Wills Phys Lab, Bristol BS8 1TL, Avon, England
[2] Swiss Fed Inst Technol, Festkorperphys Lab, CH-8093 Zurich, Switzerland
来源：
PHYSICAL REVIEW B | 2004年 / 70卷 / 14期
关键词：
D O I：
10.1103/PhysRevB.70.144501
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The de Haas-van Alphen (dHvA) signal arising from orbits on the pi Fermi surface sheet of the two-gap superconductor MgB2 has been observed in the vortex state below H-c2. An extra attenuation of the dHvA signal, beyond those effects described in the conventional Lifshitz-Kosevich expression, is seen due to the opening of the superconducting gap. Our data show that the pi band gap is still present up to H-c2. The data are compared to current theories of dHvA oscillations in the superconducting state which allow us to extract estimates for the evolution of the pi band gap with magnetic field. Contrary to results for other materials, we find that the most recent theories dramatically underestimate the damping in MgB2.
引用
收藏
页码：144501 / 1
页数：9
相关论文
共 56 条
[41]   THEORETICAL INVESTIGATIONS OF THE VORTEX LATTICE AND DE HAAS-VAN-ALPHEN OSCILLATIONS IN THE SUPERCONDUCTING STATE [J].
MILLER, P ;
GYORFFY, BL .
JOURNAL OF PHYSICS-CONDENSED MATTER, 1995, 7 (28) :5579-5606
[42]   DE-HAAS-VAN-ALPHEN OSCILLATIONS IN SUPERCONDUCTING STATES AS A PROBE OF GAP ANISOTROPY [J].
MIYAKE, K .
PHYSICA B-CONDENSED MATTER, 1993, 186-88 :115-117
[43]   Fermi surface properties and de Haas-van Alphen oscillation in both the normal and superconducting mixed states of URu2Si2 [J].
Ohkuni, H ;
Inada, Y ;
Tokiwa, Y ;
Sakurai, K ;
Settai, R ;
Honma, T ;
Haga, Y ;
Yamamoto, E ;
Onuki, Y ;
Yamagami, H ;
Takahashi, S ;
Yanagisawa, T .
PHILOSOPHICAL MAGAZINE B-PHYSICS OF CONDENSED MATTER STATISTICAL MECHANICS ELECTRONIC OPTICAL AND MAGNETIC PROPERTIES, 1999, 79 (07) :1045-1077
[44]   Fermi surfaces of diborides:: MgB2 and ZrB2 -: art. no. 024521 [J].
Rosner, H ;
An, JM ;
Pickett, WE ;
Drechsler, SL .
PHYSICAL REVIEW B, 2002, 66 (02)
[45]   Surface contribution to the superconducting properties of MgB2 single crystals -: art. no. 172502 [J].
Rydh, A ;
Welp, U ;
Hiller, JM ;
Koshelev, AE ;
Kwok, WK ;
Crabtree, GW ;
Kim, KHP ;
Kim, KH ;
Jung, CU ;
Lee, HS ;
Kang, B ;
Lee, SI .
PHYSICAL REVIEW B, 2003, 68 (17)
[46]   Quasi-two-dimensional Fermi surfaces and the de Haas-van Alphen oscillation in both the normal and superconducting mixed states of CeCoIn5 [J].
Settai, R ;
Shishido, H ;
Ikeda, S ;
Murakawa, Y ;
Nakashima, M ;
Aoki, D ;
Haga, Y ;
Harima, H ;
Onuki, Y .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2001, 13 (27) :L627-L634
[47]   EVIDENCE FOR TWO ENERGY GAPS IN HIGH-PURITY SUPERCONDUCTING NB TA AND V [J].
SHEN, LYL ;
SENOZAN, NM ;
PHILLIPS, NE .
PHYSICAL REVIEW LETTERS, 1965, 14 (25) :1025-+
[48]  
Shoenberg D., 2009, Magnetic Oscillations in Metals
[49]   The origin of multiple superconducting gaps in MgB2 [J].
Souma, S ;
Machida, Y ;
Sato, T ;
Takahashi, T ;
Matsui, H ;
Wang, SC ;
Ding, H ;
Kaminski, A ;
Campuzano, JC ;
Sasaki, S ;
Kadowaki, K .
NATURE, 2003, 423 (6935) :65-67
[50]   SUPERCONDUCTORS IN STRONG MAGNETIC-FIELDS - DEHAAS-VANALPHEN EFFECT [J].
STEPHEN, MJ .
PHYSICAL REVIEW B, 1992, 45 (10) :5481-5485
123456