INTERMOLECULAR VIBRATIONS IN PURE AND DOPED C-60 - AN INELASTIC NEUTRON-SCATTERING STUDY

被引：33

作者：

RENKER, B

GOMPF, F

SCHOBER, H

ADELMANN, P

BORNEMANN, HJ

HEID, R

机构：

[1] Kernforschungszentrum Karlsruhe, Institut für Nukleare Festkörperphysik, Karlsruhe, D-76021

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1993年 / 92卷 / 04期

关键词：

D O I：

10.1007/BF01320507

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We discuss the results of inelastic neutron time-of-flight spectroscopy on powder samples of C60, K3C60 and Rb3C60. A well structured density of states is obtained from the raw data where the details can be attributed to translational acoustic/optic and librational modes. The intermolecular excitation spectra for all three compounds can be well understood within the framework of lattice dynamics of a molecular crystal. We show that a particular sample preparation is necessary to avoid impurity contributions in particular within the gap region between inter- and intramolecular vibrations. There are indications for a weak anomalous temperature dependence of low energy phonons in K3C60 at T(c).

引用

页码：451 / 455

页数：5

共 21 条

[11] SYNTHESIS AND CHARACTERIZATION OF ALKALI-METAL FULLERIDES - AXC60 [J].

MURPHY, DW ;

ROSSEINSKY, MJ ;

FLEMING, RM ;

TYCKO, R ;

RAMIREZ, AP ;

HADDON, RC ;

SIEGRIST, T ;

DABBAGH, G ;

TULLY, JC ;

WALSTEDT, RE .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1992, 53 (11) :1321-1332

[12] COHERENT QUASI-ELASTIC NEUTRON-SCATTERING STUDY OF THE ROTATIONAL-DYNAMICS OF C60 IN THE ORIENTATIONALLY DISORDERED PHASE [J].

NEUMANN, DA ;

COPLEY, JRD ;

CAPPELLETTI, RL ;

KAMITAKAHARA, WA ;

LINDSTROM, RM ;

CREEGAN, KM ;

COX, DM ;

ROMANOW, WJ ;

COUSTEL, N ;

MCCAULEY, JP ;

MALISZEWSKYJ, NC ;

FISCHER, JE ;

SMITH, AB .

PHYSICAL REVIEW LETTERS, 1991, 67 (27) :3808-3811

[13]

PINTSCHOVIUS L, 1992, PHYS REV LETT, V69, P2622

[14] VIBRATIONAL SPECTROSCOPY OF SUPERCONDUCTING K3C60 BY INELASTIC NEUTRON-SCATTERING [J].

PRASSIDES, K ;

TOMKINSON, J ;

CHRISTIDES, C ;

ROSSEINSKY, MJ ;

MURPHY, DW ;

HADDON, RC .

NATURE, 1991, 354 (6353) :462-463

[15] ISOTOPE EFFECT IN SUPERCONDUCTING RB3C60 [J].

RAMIREZ, AP ;

KORTAN, AR ;

ROSSEINSKY, MJ ;

DUCLOS, SJ ;

MUJSCE, AM ;

HADDON, RC ;

MURPHY, DW ;

MAKHIJA, AV ;

ZAHURAK, SM ;

LYONS, KB .

PHYSICAL REVIEW LETTERS, 1992, 68 (07) :1058-1060

[16]

RENKER B, 1992, Z PHYS B, V90, P325

[17] SUPERCONDUCTIVITY IN ALKALI INTERCALATED C-60 [J].

SCHLUTER, M ;

LANNOO, M ;

NEEDELS, M ;

BARAFF, GA ;

TOMANEK, D .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1992, 53 (11) :1473-&

[18] STRUCTURE OF SINGLE-PHASE SUPERCONDUCTING K3C60 [J].

STEPHENS, PW ;

MIHALY, L ;

LEE, PL ;

WHETTEN, RL ;

HUANG, SM ;

KANER, R ;

DEIDERICH, F ;

HOLCZER, K .

NATURE, 1991, 351 (6328) :632-634

[19] SUPERCONDUCTIVITY IN THE FULLERENES [J].

VARMA, CM ;

ZAANEN, J ;

RAGHAVACHARI, K .

SCIENCE, 1991, 254 (5034) :989-992

[20] TEMPERATURE-DEPENDENCE OF THE LATTICE-DYNAMICS OF RB3C60 [J].

WHITE, JW ;

LINDSELL, G ;

PANG, L ;

PALMISANO, A ;

SIVIA, DS ;

TOMKINSON, J .

CHEMICAL PHYSICS LETTERS, 1992, 191 (1-2) :92-96

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