NMR-STUDIES OF SUPERCONDUCTING NA(2)AC(60) (A=CS, RB, AND K) FULLERIDES

被引：25

作者：

MANIWA, Y ^{[1
]}

SAITO, T ^{[1
]}

KUME, K ^{[1
]}

KIKUCHI, K ^{[1
]}

IKEMOTO, I ^{[1
]}

SUZUKI, S ^{[1
]}

ACHIBA, Y ^{[1
]}

HIROSAWA, I ^{[1
]}

KOSAKA, M ^{[1
]}

TANIGAKI, K ^{[1
]}

机构：

[1] NEC CORP LTD, TSUKUBA, IBARAKI 305, JAPAN

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.52.R7054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Multiple-nuclei NMR investigations on fullerides that contain sodium, Na(2)AC(60) (A=K,Rb,Cs), with a simple-cubic structure are reported. The density of states at the Fermi level vs lattice constant correlation was determined. The superconductivity in Na(2)AC(60) connot be described by the same parameters as those of the other A(3) C-60 superconductors within the Bardeen-Cooper-Schrieffer theory. We find that structural imperfection plays an important role in determining the electronic states and onset of superconductivity in Na(2)AC(60). Evidence for the orientational ordering transition was also found with Na-23 NMR for A =Cs, Rb, and K.

引用

页码：R7054 / R7057

页数：4

共 13 条

[1] SUPERCONDUCTIVITY AT 18-K IN POTASSIUM-DOPED C-60 [J].

HEBARD, AF ;

ROSSEINSKY, MJ ;

HADDON, RC ;

MURPHY, DW ;

GLARUM, SH ;

PALSTRA, TTM ;

RAMIREZ, AP ;

KORTAN, AR .

NATURE, 1991, 350 (6319) :600-601

[2] ORIENTATIONAL DISORDER OF C-60 IN LI2CSC60 [J].

HIROSAWA, I ;

PRASSIDES, K ;

MIZUKI, J ;

TANIGAKI, K ;

GEVAERT, M ;

LAPPAS, A ;

COCKCROFT, JK .

SCIENCE, 1994, 264 (5163) :1294-1297

[3] C-60 ORIENTATIONAL ORDERING IN SUPERCONDUCTING NA2RBC60 [J].

KNIAZ, K ;

FISCHER, JE ;

ZHU, Q ;

ROSSEINSKY, MJ ;

ZHOU, O ;

MURPHY, DW .

SOLID STATE COMMUNICATIONS, 1993, 88 (01) :47-50

[4] ELECTRONIC STATES AND SUPERCONDUCTIVITY IN ALKALI-INTERCALATED FULLERIDES - C-13-NMR STUDY IN NA2RBC60, NA2CSC60, K3C60, K2RBC60, K2CSC60, KRBCSC60, RB2CSC60 AND RBCS2C60 [J].

MANIWA, Y ;

SAITO, T ;

OHI, A ;

MIZOGUCHI, K ;

KUME, K ;

KIKUCHI, K ;

IKEMOTO, I ;

SUZUKI, S ;

ACHIBA, Y ;

KOSAKA, M ;

TANIGAKI, K ;

EBBESEN, TW .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1994, 63 (03) :1139-1148

[5] THERMAL EFFECTS ON THE DYNAMICS AND ELECTRONIC STATES OF NA3C60 [J].

MITCH, MG ;

CHASE, SJ ;

LANNIN, JS .

PHYSICAL REVIEW B, 1993, 48 (11) :8517-8520

[6] CRYSTAL-STRUCTURE, BONDING, AND PHASE-TRANSITION OF THE SUPERCONDUCTING NA2CSC60 FULLERIDE [J].

PRASSIDES, K ;

CHRISTIDES, C ;

THOMAS, IM ;

MIZUKI, J ;

TANIGAKI, K ;

HIROSAWA, I ;

EBBESEN, TW .

SCIENCE, 1994, 263 (5149) :950-954

[7]

SAITO T, UNPUB

[8] 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

[9] 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

[10] PHASE-TRANSITIONS IN NA2AC60 (A=CS, RB, AND K) FULLERIDES [J].

TANIGAKI, K ;

HIROSAWA, I ;

MANAKO, T ;

TSAI, JS ;

MIZUKI, J ;

EBBESEN, TW .

PHYSICAL REVIEW B, 1994, 49 (17) :12307-12310

← 1 2 →