PHASE-TRANSITION IN RBC60 - VIBRATIONAL AND ELECTRONIC-PROPERTIES

被引：25

作者：

LOPINSKI, GP

MITCH, MG

FOX, JR

LANNIN, JS

机构：

[1] Department of Physics, Pennsylvania State University, University Park

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.50.16098

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In situ Raman scattering, ultraviolet-photoemission-spectroscopy (UPS), and electron-energy-loss-spectroscopy (EELS) measurements have been performed on crystalline films of RbC60 through the fcc-to-orthorhombic structural phase transition. The Raman spectra exhibit large changes in intensity of modes not active for isolated icosahedra, including ungerade vibrations. This is attributed to a substantial increase in interfullerene coupling in the presence of C60 merohedral disorder. UPS measurements indicate a finite density of states at the Fermi energy for both phases with small changes in the C60 derived states through the transition. Low-energy metalliclike excitations are observed in EELS. © 1994 The American Physical Society.

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页码：16098 / 16101

页数：4

相关论文

共 19 条

[11] Raman scattering and electron phonon coupling in A3C60 [J].

Mitch, Michael G. ;

Lannin, Jeffrey S. .

Journal of Physics and Chemistry of Solids, 1993, 54 (12) :1801-1816

[12] ORTHORHOMBIC A(1)C60 - A CONDUCTING LINEAR ALKALI FULLERIDE POLYMER [J].

PEKKER, S ;

FORRO, L ;

MIHALY, L ;

JANOSSY, A .

SOLID STATE COMMUNICATIONS, 1994, 90 (06) :349-352

[13] PHOTOINDUCED POLYMERIZATION OF SOLID C-60 FILMS [J].

RAO, AM ;

ZHOU, P ;

WANG, KA ;

HAGER, GT ;

HOLDEN, JM ;

WANG, Y ;

LEE, WT ;

BI, XX ;

EKLUND, PC ;

CORNETT, DS ;

DUNCAN, MA ;

AMSTER, IJ .

SCIENCE, 1993, 259 (5097) :955-957

[14] CONDUCTION-BAND STRUCTURE OF ALKALI-METAL-DOPED C-60 [J].

SATPATHY, S ;

ANTROPOV, VP ;

ANDERSEN, OK ;

JEPSEN, O ;

GUNNARSSON, O ;

LIECHTENSTEIN, AI .

PHYSICAL REVIEW B, 1992, 46 (03) :1773-1793

[15] ELECTRON-ENERGY-LOSS STUDIES OF RBXC60 AND RBXC70(X=0, 3, AND 6) [J].

SOHMEN, E ;

FINK, J .

PHYSICAL REVIEW B, 1993, 47 (21) :14532-14540

[16] ELECTRICAL-TRANSPORT IN NA, K, RB, AND CS FULLERIDES - PHASE-FORMATION, MICROSTRUCTURE, AND METALLICITY [J].

STEPNIAK, F ;

BENNING, PJ ;

POIRIER, DM ;

WEAVER, JH .

PHYSICAL REVIEW B, 1993, 48 (03) :1899-1906

[17] ELECTRONIC-PROPERTIES AND PHASE-TRANSITIONS OF RBC60 AND CSC60 - INVESTIGATION BY NMR-SPECTROSCOPY [J].

TYCKO, R ;

DABBAGH, G ;

MURPHY, DW ;

ZHU, Q ;

FISCHER, JE .

PHYSICAL REVIEW B, 1993, 48 (12) :9097-9105

[18] ROTATIONAL ORDERING TRANSITION IN SINGLE-CRYSTAL C-60 STUDIED BY RAMAN-SPECTROSCOPY [J].

VANLOOSDRECHT, PHM ;

VANBENTUM, PJM ;

MEIJER, G .

PHYSICAL REVIEW LETTERS, 1992, 68 (08) :1176-1179

[19] POTASSIUM-DOPED FULLERENE KXC60 WITH X = 0,1,2,3,4, AND 6 [J].

WINTER, J ;

KUZMANY, H .

SOLID STATE COMMUNICATIONS, 1992, 84 (10) :935-938