DO THE INTRAMOLECULAR C = C STRETCHING VIBRATIONAL-MODES IN ET MEDIATE ELECTRON-PAIRING IN KAPPA-(ET)2X SUPERCONDUCTORS

被引：22

作者：

KINI, AM ^{[1
]}

DUDEK, JD ^{[1
]}

CARLSON, KD ^{[1
]}

GEISER, U ^{[1
]}

KLEMM, RA ^{[1
]}

WILLIAMS, JM ^{[1
]}

LYKKE, KR ^{[1
]}

SCHLUETER, JA ^{[1
]}

WANG, HH ^{[1
]}

WURZ, P ^{[1
]}

FERRARO, JR ^{[1
]}

YACONI, GA ^{[1
]}

STOUT, P ^{[1
]}

机构：

[1] BIORAD,DIGILAB DIV,CAMBRIDGE,MA 02137

来源：

PHYSICA C | 1993年 / 204卷 / 3-4期

关键词：

D O I：

10.1016/0921-4534(93)91026-R

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Isotopic labelling (C-13) of all six double-bonded carbon atoms in bis(ethylenedithio)tetrathiafulvalene (BEDT-TTF or ET), which results in large shifts (56-67 cm-1) in the frequencies of intramolecular a(g) modes at approximately 1500 cm-1, is found to lead to no measurable isotope effect on T(c) in the high-T(c) ambient pressure organic superconductors kappa-(ET)2Cu(NCS)2 (T(c) = 10.4 K) and kappa-(ET)2CU[N(CN)2]Br (T(c) = 11.6 K). Thus, the intramolecular C=C stretching vibrational modes in ET at energies near 1500 cm-1 are not dominant mediators of superconducting pairing in these molecular superconductors.

引用

页码：399 / 405

页数：7

共 28 条

[11] JEROME D, 1991, SCIENCE, V252, P1510
[12] A NEW AMBIENT-PRESSURE ORGANIC SUPERCONDUCTOR, KAPPA-(ET)2CU[N(CN)2]BR, WITH THE HIGHEST TRANSITION-TEMPERATURE YET OBSERVED (INDUCTIVE ONSET TC = 11.6 K, RESISTIVE ONSET = 12.5 K)
KINI, AM
GEISER, U
WANG, HH
CARLSON, KD
WILLIAMS, JM
KWOK, WK
VANDERVOORT, KG
THOMPSON, JE
STUPKA, DL
JUNG, D
WHANGBO, MH
[J]. INORGANIC CHEMISTRY, 1990, 29 (14) : 2555 - 2557
[13] UNUSUAL BEHAVIOR IN THE UPPER CRITICAL MAGNETIC-FIELDS OF THE AMBIENT-PRESSURE ORGANIC SUPERCONDUCTOR - KAPPA-(BEDT-TTF)2CU[N(CN)2]BR [WHERE BEDT-TTF REPRESENTS BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE]
KWOK, WK
WELP, U
CARLSON, KD
CRABTREE, GW
VANDERVOORT, KG
WANG, HH
KINI, AM
WILLIAMS, JM
STUPKA, DL
MONTGOMERY, LK
THOMPSON, JE
[J]. PHYSICAL REVIEW B, 1990, 42 (13): : 8686 - 8689
[14] LIPARI NO, 1977, INT J QUANTUM CHEM, V11, P583
[15] VANHOVE SINGULARITIES AND HIGH-TC SUPERCONDUCTIVITY - A REVIEW
MARKIEWICZ, RS
[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 1991, 5 (12): : 2037 - 2071
[16] ELECTRON-MOLECULAR VIBRATION COUPLING IN 2-D ORGANIC CONDUCTORS - HIGH AND LOW-TEMPERATURE PHASES OF ALPHA-(BEDT-TTF)2I3
MENEGHETTI, M
BOZIO, R
PECILE, C
[J]. JOURNAL DE PHYSIQUE, 1986, 47 (08): : 1377 - 1387
[17] MERZHANOV V, 1992, CR ACAD SCI II, V314, P563
[18] ORGANIC METALS - ALKYLTHIO SUBSTITUTION EFFECTS IN TETRATHIAFULVALENE-TETRACYANOQUINODIMETHANE CHARGE-TRANSFER COMPLEXES
MIZUNO, M
GARITO, AF
CAVA, MP
[J]. JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS, 1978, (01) : 18 - 19
[19] ISOTOPE EFFECT IN SUPERCONDUCTING RB3C60
RAMIREZ, AP
KORTAN, AR
ROSSEINSKY, MJ
DUCLOS, SJ
MUJSCE, AM
HADDON, RC
MURPHY, DW
MAKHIJA, AV
ZAHURAK, SM
LYONS, KB
[J]. PHYSICAL REVIEW LETTERS, 1992, 68 (07) : 1058 - 1060
[20] SPECIFIC-HEAT JUMP AT T(C) AND NORMAL-STATE MAGNETIC-SUSCEPTIBILITY OF A3C60
RAMIREZ, AP
ROSSEINSKY, MJ
MURPHY, DW
HADDON, RC
[J]. PHYSICAL REVIEW LETTERS, 1992, 69 (11) : 1687 - 1690

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