NEUTRON SPECTROSCOPY AND ELECTRON-PHONON COUPLING IN ALKALI-METAL-DOPED FULLERIDES

被引：57

作者：

PRASSIDES, K

CHRISTIDES, C

ROSSEINSKY, MJ

TOMKINSON, J

MURPHY, DW

HADDON, RC

机构：

[1] AT&T BELL LABS,MURRAY HILL,NJ 07974

[2] RUTHERFORD APPLETON LAB,DIDCOT OX11 0QX,OXON,ENGLAND

来源：

EUROPHYSICS LETTERS | 1992年 / 19卷 / 07期

关键词：

SUPERCONDUCTING LAYER STRUCTURES AND INTERCALATION COMPOUNDS; INELASTIC NEUTRON SCATTERING AND (N; P); REACTIONS;

D O I：

10.1209/0295-5075/19/7/011

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The vibrational spectrum of saturation-doped insulating Rb6C60 has been measured by inelastic neutron scattering at nonzero momentum transfer in the energy range (5 divided-by 200) meV at 20 K The two lowest-energy fivefold degenerate H(g) modes sharpen substantially in comparison with superconducting K3C60, acquiring comparable widths to those found in pristine C60. This is interpreted as evidence for the importance of these modes in the pairing interaction for superconductivity. We estimate that the radial H(g) modes make a substantial contribution to the total electron-phonon coupling strength in the superconducting fullerides.

引用

页码：629 / 635

页数：7

共 40 条

[1]

ANDERSON PH, IN PRESS

[2]

BASKARAN G, 1991, CURR SCI INDIA, V61, P33

[3] NEUTRON MEASUREMENTS OF INTRAMOLECULAR VIBRATIONAL-MODES IN C60 [J].

CAPPELLETTI, RL ;

COPLEY, JRD ;

KAMITAKAHARA, WA ;

LI, F ;

LANNIN, JS ;

RAMAGE, D .

PHYSICAL REVIEW LETTERS, 1991, 66 (25) :3261-3264

[4] SUPERCONDUCTIVITY OF DOPED FULLERENES [J].

CHAKRAVARTY, S ;

KIVELSON, S .

EUROPHYSICS LETTERS, 1991, 16 (08) :751-756

[5] SYNTHESIS OF PURE C-13(60) AND DETERMINATION OF THE ISOTOPE EFFECT FOR FULLERENE SUPERCONDUCTORS [J].

CHEN, CC ;

LIEBER, CM .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1992, 114 (08) :3141-3142

[6] NEUTRON INELASTIC-SCATTERING SPECTRUM OF FOOTBALLENE C60 [J].

COULOMBEAU, C ;

JOBIC, H ;

BERNIER, P ;

FABRE, C ;

SCHUTZ, D ;

RASSAT, A .

JOURNAL OF PHYSICAL CHEMISTRY, 1992, 96 (01) :22-24

[7] PHONON DENSITY OF STATES IN PB2SR2(CA,Y)CU3O8 [J].

CURRAT, R ;

DIANOUX, AJ ;

MONCEAU, P ;

CAPPONI, JJ .

PHYSICAL REVIEW B, 1989, 40 (16) :11362-11365

[8] LOW-ENERGY ELECTRONIC EXCITATIONS AND FANO RESONANCE IN K-DOPED C-60 FROM RAMAN-SCATTERING EXCITED AT 1.16EV [J].

DANIELI, R ;

DENISOV, VN ;

RUANI, G ;

ZAMBONI, R ;

TALIANI, C ;

ZAKHIDOV, AA ;

UGAWA, A ;

IMAEDA, K ;

YAKUSHI, K ;

INOKUCHI, H ;

KIKUCHI, K ;

IKEMOTO, I ;

SUZUKI, S ;

ACHIBA, Y .

SOLID STATE COMMUNICATIONS, 1992, 81 (03) :257-260

[9] RAMAN STUDIES OF ALKALI-METAL DOPED AXC60 FILMS (A = NA, K, RB, AND CS, X = 0, 3, AND 6) [J].

DUCLOS, SJ ;

HADDON, RC ;

GLARUM, S ;

HEBARD, AF ;

LYONS, KB .

SCIENCE, 1991, 254 (5038) :1625-1627

[10] ISOTOPE EFFECT ON SUPERCONDUCTIVITY IN RB3C60 [J].

EBBESEN, TW ;

TSAI, JS ;

TANIGAKI, K ;

TABUCHI, J ;

SHIMAKAWA, Y ;

KUBO, Y ;

HIROSAWA, I ;

MIZUKI, J .

NATURE, 1992, 355 (6361) :620-622

← 1 2 3 4 →