Magnetic Field Dependent Effective Mass in the Organic Superconductor κ-(BEDT-TTF)_{2}I_{3}

• Authors: E. Balthes , D. Schweitzer , I. Heinen , H. Keller , W. Biberacher , A. Jansen , E. Steep
• Languages of publication: EN

Abstracts

EN

κ-(BEDT-TTF)_{2}I_{3} is an electronically extreme two-dimensional organic metal with a superconducting transition at around 4 K. In magnetic fields above 12 T the effective mass, as obtained from the temperature depen­dence of the amplitudes of Shubnikov-de Haas oscillations, is magnetic field dependent as long as the magnetic field is arranged perpendicular to the conducting planes. In contrast to this, by turning the magnetic field by 27° or even only 9° the observed effective mass (as obtained from Shubnikov-­de Haas and de Haas-van Alphen measurements) is field independent. We suppose that the occurrence of anyons at temperatures below 1 K in fields above 12 T is the reason for the observed field dependence of the effective mass.

Keywords

EN

74.70.Kn; 71.25.Hc; 71.25.Jd

Discipline

• 74.70.Kn: Organic superconductors

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 87
• Issue: 4-5
• Pages: 767-772

Dates

published

1995-04

Contributors

author

E. Balthes

• 3. Physik. Institut, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany

author

D. Schweitzer

• 3. Physik. Institut, Universität Stuttgart, Pfaffenwaldring 57, 70550 Stuttgart, Germany

author

I. Heinen

• Anorg.-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270,. 69120 Heidelberg, Germany

author

H. Keller

• Anorg.-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270,. 69120 Heidelberg, Germany

author

W. Biberacher

• Walther Meissner Institut, Walther-Meissner-Str. 8, 85748 Garching, Germany

author

A. Jansen

• High Magnetic Field Laboratory, MPI für Festkörperforschung, 38042 Grenoble Cedex 9, France

author

E. Steep

• High Magnetic Field Laboratory, MPI für Festkörperforschung, 38042 Grenoble Cedex 9, France

Identifiers

DOI

10.12693/APhysPolA.87.767