C-13=C-13 ISOTOPE EFFECT FOR TC AND CONSEQUENCES REGARDING THE SUPERCONDUCTING PAIRING MECHANISM IN KAPPA-(ET)2X SUPERCONDUCTORS

被引：19

作者：

CARLSON, KD

KINI, AM

KLEMM, RA

WANG, HH

WILLIAMS, JM

GEISER, U

KUMAR, SK

FERRARO, JR

LYKKE, KR

WURZ, P

FLESHLER, S

DUDEK, JD

EASTMAN, NL

MOBLEY, PR

SEAMAN, JM

SUTIN, JDB

YACONI, GA

PARKER, DH

STOUT, P

机构：

[1] ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439

[2] UNIV CALIF IRVINE,DEPT CHEM,IRVINE,CA 92717

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

来源：

INORGANIC CHEMISTRY | 1992年 / 31卷 / 16期

关键词：

D O I：

10.1021/ic00042a004

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Is the stretching motion of thc central C=C bond in the ET molecule [bis(ethylenedithio)tetrathiafulvalene] a major source of phonons for superconducting electron pairing in ET-based layered organic cation/polymeric inorganic anion superconductors? This possibility has theoretical support and recent experimental affirmation in beta*-(ET)2I3, a pressurized salt with T(c) almost-equal-to 8 K. New studies of the two highest-T(c) c) layered, ambient-pressure kappa-phase salts, kappa-(ET)2. Cu[N(CN)2]Br (T(c) = 11.7 +/- 0.1 K) and kappa-(ET)2Cu(NCS)2 (T(c) = 9.6 +/- 0.1 K), show that the C=C stretching motion is not a dominant mechanism, nor, in fact, a very likely one over conventional BCS-type pairing in any ET-based organic superconductor.

引用

页码：3346 / 3348

页数：3

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