CONSIDERATION OF THE MECHANISM OF SUPERCONDUCTIVITY IN FULLERENES - BEYOND MIGDAL THEOREM AND THE DYNAMIC COULOMB EFFECT

被引：35
作者：
TAKADA, Y
机构：
[1] Institute for Solid State Physics, University of Tokyo, Minato-ku, Tokyo, 106
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1993年 / 54卷 / 12期
关键词：
SUPERCONDUCTIVITY; PHONON MECHANISM; PLASMON; VERTEX CORRECTIONS; MIGDAL THEOREM; GAUGE-INVARIANT SELF-CONSISTENT (GISC);
D O I：
10.1016/0022-3697(93)90290-8
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A scheme is presented to include vertex corrections up to infinite order in the calculation of the superconducting transition temperature T(c). The scheme is applied to the alkali-metal-doped fullerenes. By considering the contribution from both the carrier plasmons and the intramolecular high-frequency phonon modes with lambda around 0.6, we can reproduce the experimentally-observed T(c) vs a relation quantitatively, where a is the fcc lattice constant. For the isotope exponent alpha, the present calculation gives values around 0.2.
引用
收藏
页码：1779 / 1788
页数：10
相关论文
共 55 条
[21]   SUPERCONDUCTIVITY AT 8.4-K IN CALCIUM-DOPED C-60 [J].
KORTAN, AR ;
KOPYLOV, N ;
GLARUM, S ;
GYORGY, EM ;
RAMIREZ, AP ;
FLEMING, RM ;
THIEL, FA ;
HADDON, RC .
NATURE, 1992, 355 (6360) :529-532
[22]   SUPERCONDUCTIVITY IN BARIUM FULLERIDE [J].
KORTAN, AR ;
KOPYLOV, N ;
GLARUM, S ;
GYORGY, EM ;
RAMIREZ, AP ;
FLEMING, RM ;
ZHOU, O ;
THIEL, FA ;
TREVOR, PL ;
HADDON, RC .
NATURE, 1992, 360 (6404) :566-568
[23]  
Kuper C., 1963, POLARONS EXCITONS
[24]   THE MOTION OF SLOW ELECTRONS IN A POLAR CRYSTAL [J].
LEE, TD ;
LOW, FE ;
PINES, D .
PHYSICAL REVIEW, 1953, 90 (02) :297-302
[25]   SINGLE-PARTICLE SPECTRUM OF DEGENERATE ELECTRON GAS .2. NUMERICAL RESULTS FOR ELECTRONS COUPLED TO PLASMONS [J].
LUNDQVIST, BI .
PHYSIK DER KONDENSITERTEN MATERIE, 1967, 6 (03) :206-+
[26]   STRUCTURAL AND ELECTRONIC-PROPERTIES OF KNC-60 [J].
MARTINS, JL ;
TROULLIER, N .
PHYSICAL REVIEW B, 1992, 46 (03) :1766-1772
[27]  
MARTINS JL, 1992, PHYS REV B, V46, P1754
[28]   QUANTITATIVE THEORY OF SUPERCONDUCTIVITY IN DOPED C-60 [J].
MAZIN, II ;
RASHKEEV, SN ;
ANTROPOV, VP ;
JEPSEN, O ;
LIECHTENSTEIN, AI ;
ANDERSEN, OK .
PHYSICAL REVIEW B, 1992, 45 (09) :5114-5117
[29]   TRANSITION TEMPERATURE OF STRONG-COUPLED SUPERCONDUCTORS [J].
MCMILLAN, WL .
PHYSICAL REVIEW, 1968, 167 (02) :331-&
[30]  
Migdal A. B., 1958, ZH EKSP TEOR FIZ, V34, p[1438, 996]
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