Is "Rb3C60" really Rb3C60?: The NMR T,T′ problem

被引:10
作者
Gorny, K
Hahm, C
Martindale, JA
Yu, S
Pennington, CH
Buffinger, DR
Ziebarth, RP
机构
[1] Ohio State Univ, Dept Phys, Columbus, OH 43210 USA
[2] Ohio State Univ, Dept Chem, Columbus, OH 43210 USA
关键词
D O I
10.1103/PhysRevLett.79.5118
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A priori theoretical considerations lead one to expect that Rb3C60 is a Mott-Hubbard insulator. This has led to the proposal that the superconductor "Rb3C60" is, in fact, Rb3-epsilonC60 if (epsilon similar to 0.06), and, furthermore, that the vacancies are associated with an unexpected, robust splitting in Rb-87 NMR, We demonstrate that vacancies, if present, are unrelated to observed NMR splittings.
引用
收藏
页码:5118 / 5121
页数:4
相关论文
共 16 条
[1]   On the structural distortion in Rb3C60 and K3C60 revealed by Rb-87- and K-39- NMR [J].
Apostol, M ;
Goze, C ;
Rachdi, F ;
Mehring, M ;
Fischer, JE .
SOLID STATE COMMUNICATIONS, 1996, 98 (03) :253-257
[2]  
BENDELE GM, IN PRESS
[3]   STRUCTURAL-ANALYSIS OF FULLERENE AND FULLERIDE SOLIDS FROM SYNCHROTRON X-RAY-POWDER DIFFRACTION [J].
FISCHER, JE ;
BENDELE, G ;
DINNEBIER, R ;
STEPHENS, PW ;
LIN, CL ;
BYKOVETZ, N ;
ZHU, Q .
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1995, 56 (10) :1445-1457
[4]   Mott transition in degenerate Hubbard models: Application to doped fullerenes [J].
Gunnarsson, O ;
Koch, E ;
Martin, RM .
PHYSICAL REVIEW B, 1996, 54 (16) :11026-11029
[5]   BAND-GAP, EXCITONS, AND COULOMB INTERACTION IN SOLID C-60 [J].
LOF, RW ;
VANVEENENDAAL, MA ;
KOOPMANS, B ;
JONKMAN, HT ;
SAWATZKY, GA .
PHYSICAL REVIEW LETTERS, 1992, 68 (26) :3924-3927
[6]   Double-resonance NMR probes of structural distortions in alkali-metal-fulleride superconductors [J].
Pennington, CH ;
Hahm, C ;
Stenger, VA ;
Gorny, K ;
Recchia, CH ;
Martindale, JA ;
Buffinger, DR ;
Ziebarth, RP .
PHYSICAL REVIEW B, 1996, 54 (10) :R6853-R6856
[7]   C-13 NMR hyperfine couplings, T-1 anisotropy, and Korringa relations in Rb2CSC60: Search for effects of strong correlation [J].
Pennington, CH ;
Stenger, VA ;
Recchia, CH ;
Hahm, C ;
Gorny, K ;
Nandor, V ;
Buffinger, DR ;
Lee, SM ;
Ziebarth, RP .
PHYSICAL REVIEW B, 1996, 53 (06) :R2967-R2970
[8]   Nuclear magnetic resonance of C-60 and fulleride superconductors [J].
Pennington, CH ;
Stenger, VA .
REVIEWS OF MODERN PHYSICS, 1996, 68 (03) :855-910
[9]  
Slichter, 1989, PRINCIPLES NUCL MAGN
[10]   NUCLEAR-MAGNETIC-RESONANCE OF A(3)C(60) SUPERCONDUCTORS [J].
STENGER, VA ;
PENNINGTON, CH ;
BUFFINGER, DR ;
ZIEBARTH, RP .
PHYSICAL REVIEW LETTERS, 1995, 74 (09) :1649-1652