MAGNETICALLY MODULATED MICROWAVE-ABSORPTION (MMMA) AT LOW MAGNETIC-FIELDS IN (BEDT-TTF)-SUPERCONDUCTORS

被引：10

作者：

BELE, P

BRUNNER, H

SCHWEITZER, D

KELLER, HJ

机构：

[1] UNIV STUTTGART,INST PHYS 3,D-70550 STUTTGART,GERMANY

[2] UNIV HEIDELBERG,INST ANORGAN CHEM,D-69120 HEIDELBERG,GERMANY

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 92卷 / 03期

关键词：

SUPERCONDUCTORS; FLUXPINNING AND CREEP;

D O I：

10.1016/0038-1098(94)90874-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report magnetically modulated microwave absorption ( MMMA ) at low magnetic fields in crystals of the organic superconductors alpha(t)-(BEDT-TTF)2 I3 and kappa-(BEDT-TTF)2Cu(NCS)2. In both cases a strong MMMA - signal can easily be found below the critical temperature T(c). In some selected crystals series of narrow, periodically spaced lines are observed comparable to corresponding spectra of the CuO - type high T(c) superconductors. A model developed for the HTSC's single crystals is used to interpret the results of the organic superconductors.

引用

页码：189 / 193

页数：5

共 20 条

[1]

BARAM GO, 1987, JETP LETT, V44, P489

[2] SYNTHESIS, STRUCTURE AND PHYSICAL-PROPERTIES OF A TWO-DIMENSIONAL ORGANIC METAL, DI[BIS(ETHYLENE-DITHIOLO)TETRATHIOFULVALENE] TRIIODIDE, (BEDT-TTF)2+I3- [J].

BENDER, K ;

HENNIG, I ;

SCHWEITZER, D ;

DIETZ, K ;

ENDRES, H ;

KELLER, HJ .

MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1984, 108 (3-4) :359-371

[3] FLUXON NUCLEATION BY MICROWAVE CURRENTS IN JOSEPHSON-JUNCTIONS [J].

BLAZEY, KW ;

PORTIS, AM ;

HOLTZBERG, FH .

PHYSICA C, 1989, 157 (01) :16-24

[4] MACROSCOPIC FLUX-QUANTIZATION AND MICROWAVE EXCITATION IN SINGLE-CRYSTAL YBA2CU3O7-DELTA [J].

BLAZEY, KW ;

PORTIS, AM ;

MULLER, KA ;

HOLTZBERG, FH .

EUROPHYSICS LETTERS, 1988, 6 (05) :457-462

[5] DISCRETE MICROWAVE-ABSORPTION LINES IN YBA2CU3O7-DELTA SINGLE-CRYSTALS [J].

DULCIC, A ;

CREPEAU, RH ;

FREED, JH .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 1989, 160 (3-4) :223-226

[6] SUPERCONDUCTIVITY AT 10-K AND AMBIENT PRESSURE IN THE ORGANIC METAL (BEDT-TTF)2 CU(SCN)2 [J].

GARTNER, S ;

GOGU, E ;

HEINEN, I ;

KELLER, HJ ;

KLUTZ, T ;

SCHWEITZER, D .

SOLID STATE COMMUNICATIONS, 1988, 65 (12) :1531-1534

[7] MICROWAVE-LOSS STUDIES OF ORGANIC SUPERCONDUCTORS [J].

HADDON, RC ;

GLARUM, SH ;

CHICHESTER, SV ;

RAMIREZ, AP ;

ZIMMERMAN, NM .

PHYSICAL REVIEW B, 1991, 43 (04) :2642-2647

[8] FLUX CREEP IN SINGLE-CRYSTALS OF THE HIGH-TEMPERATURE SUPERCONDUCTOR Y1BA2CU3O7-X [J].

HOFFMEISTER, D ;

DOBBERT, O ;

DINSE, KP ;

GOLDACKER, W ;

WOLF, T .

EUROPHYSICS LETTERS, 1989, 8 (04) :369-373

[9] INVESTIGATIONS OF THE THERMALLY INDUCED STRUCTURAL PHASE-TRANSFORMATION FROM THE ORGANIC METAL ALPHA-(BEDT-TTF)2I3 TO THE SUPERCONDUCTOR ALPHA-T-(BEDT-TTF)2I3 [J].

KAHLICH, S ;

GARTNER, S ;

SCHWEITZER, D ;

KELLER, HJ .

SYNTHETIC METALS, 1991, 42 (1-2) :2019-2024

[10] FLUX-QUANTIZATION IN SINGLE-CRYSTAL YBA2CU3O7-DELTA AS A FUNCTION OF DC AND MICROWAVE MAGNETIC-FIELDS [J].

KISH, K ;

TYAGI, S ;

KRAFFT, C .

PHYSICAL REVIEW B, 1991, 44 (01) :225-232

← 1 2 →