Thermodynamic properties of the organic superconductor kappa(L)-(ET)(2)Ag(CF3)4 center dot TCE

被引：3
|
作者：
Wosnitza, J
Beckmann, D
Wanka, S
Schlueter, JA
Williams, JM
Naumann, D
Roy, T
机构：
[1] ARGONNE NATL LAB, DIV CHEM, ARGONNE, IL 60439 USA
[2] ARGONNE NATL LAB, DIV MAT SCI, ARGONNE, IL 60439 USA
[3] UNIV COLOGNE, INST ANORGAN CHEM, D-50939 COLOGNE, GERMANY
来源：
SOLID STATE COMMUNICATIONS | 1996年 / 98卷 / 01期
关键词：
organic crystals; superconductors; thermodynamic properties;
D O I：
10.1016/0038-1098(96)00027-0
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We present specific-heat, magnetization, and ac-susceptibility measurements of the recently discovered organic superconductor kappa(L)-(ET)(2)Ag(CF3)(4) . TCE, where ET (=BEDT-TTF) stands for bisethylenedithio-tetrathiafulvalene and TCE is the neutral solvent 1,1,2-trichloroethane. We observed a very large anisotropy of the critical field B* extracted from ac-susceptibility data in accord with the enhanced ET-layer separation due to the large anions. The strong frequency dependence of B* reveals the weak pinning forces in the material. Magnetization and specific-heat, C, measurements prove the bulk effect of superconductivity. The linear coefficient of C is gamma approximate to 50 mJ/molK(2) which is a factor 9 larger than expected from a free-electron picture. Indications for strong coupling are found.
引用
收藏
页码：21 / 25
页数：5
相关论文
共 50 条
  • [21] Polymorphism in kappa-(BEDT-TTF)(2)M(CF3)(4)(solvent) superconductors
    Geiser, U
    Schlueter, JA
    Williams, JM
    Kini, AM
    Dudek, JD
    Kelly, ME
    Naumann, D
    Roy, T
    SYNTHETIC METALS, 1997, 85 (1-3) : 1465 - 1466
  • [22] New organic superconductors in the system (ET)(2)M(CF3)(4)(solvent) (M=Cu,Ag,Au): Dramatic effects of organometallic anion and solvent replacement
    Schlueter, JA
    Williams, JM
    Geiser, U
    Wang, HH
    Kini, AM
    Kelly, ME
    Dudek, JD
    Naumann, D
    Roy, T
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1996, 285 : 43 - 50
  • [23] PREPARATION AND PROPERTIES OF ZNBR(CF3).2L - A CONVENIENT ROUTE FOR THE PREPARATION OF CF3I
    NAUMANN, D
    TYRRA, W
    KOCK, B
    RUDOLPH, W
    WILKES, B
    JOURNAL OF FLUORINE CHEMISTRY, 1994, 67 (01) : 91 - 93
  • [24] Fermiology of the organic superconductor β"-(ET)2SF5CH2CF2SO3
    Wosnitza, J
    Wanka, S
    Qualls, JS
    Brooks, JS
    Mielke, CH
    Harrison, N
    Schlueter, JA
    Williams, JM
    Nixon, PG
    Winter, RW
    Gard, GL
    SYNTHETIC METALS, 1999, 103 (1-3) : 2000 - 2001
  • [25] New organic superconductors in the system (ET)2M(CF3)4(solvent) (M = Cu, Ag, Au): dramatic effects of organometallic anion and solvent replacement
    Argonne Natl Lab, Argonne, United States
    Mol Cryst Liq Cryst Sci Technol Sect A Mol Crys Liq Cryst, (43-50):
  • [26] SYNTHESIS AND THERMODYNAMIC CHARACTERISTICS OF W2(NME2)2(OCME(CF3)2)4
    MORTON, MD
    HEPPERT, JA
    TAKUSAGAWA, F
    VANDERVELDE, D
    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1992, 203 : 456 - INOR
  • [27] NOVEL HETEROCYCLES FROM ALKYLAMINO-BIS(TRIFLUOROMETHYL)BORANE, (CF3)(2)BNR(2), AND ISOCYANIDES - CRYSTAL AND MOLECULAR-STRUCTURE OF (NC)(CF3)(2)B-CENTER-DOT-NHME(2), (CF3)(2)B-NME(2)-B(CF3)-NET=C-C(NME(2))=NET AND (CF3)(2)B-NME(2)-B(CF3)(2)-CH-C(=NME(2))-N(CH(2)PH)-CH(PH)-N
    ANSORGE, A
    BRAUER, DJ
    BUCHHEIMSPIEGEL, S
    BURGER, H
    HAGEN, T
    PAWELKE, G
    JOURNAL OF ORGANOMETALLIC CHEMISTRY, 1995, 501 (1-2) : 347 - 358
  • [28] STRUCTURE OF NEW ORGANIC SUPERCONDUCTOR KAPPA(D8-ET)4[HGBR2.HG2BR6] IN THE FAMILY OF KAPPA(ET)4HG3-DELTA-BR8
    DYACHENKO, OA
    GRITSENKO, VV
    SHILOV, GV
    LYUBOVSKAYA, RN
    LYUBOVSKII, RB
    SYNTHETIC METALS, 1994, 62 (02) : 193 - 196
  • [29] A computational study of [M(CF3)4]- (M = Cu, Ag, Au) and their properties as weakly coordinating anions
    Preiss, Ulrich
    Krossing, Ingo
    ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2007, 633 (10): : 1639 - 1644
  • [30] SUPERCONDUCTIVITY UP TO 11.1-K IN 3 SOLVATED SALTS COMPOSED OF [AG(CF3)(4)](-) AND THE ORGANIC ELECTRON-DONOR MOLECULE BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE (ET)
    SCHLUETER, JA
    CARLSON, KD
    GEISER, U
    WANG, HH
    WILLIAMS, JM
    KWOK, WK
    FENDRICH, JA
    WELP, U
    KEANE, PM
    DUDEK, JD
    KOMOSA, AS
    NAUMANN, D
    ROY, T
    SCHIRBER, JE
    BAYLESS, WR
    DODRILL, B
    PHYSICA C, 1994, 233 (3-4): : 379 - 386
12345