Interlayer Charge Disproportionation in the Layered Organic Superconductor κH(DMEDOTSeF)2[Au(CN)4](THF) with Polar Dielectric Insulating Layers

Tadashi Kawamoto, Takehiko Mori, David Graf, James S. Brooks, Yamaguchi Takahide, Shinya Uji, Takashi Shirahata, and Tatsuro Imakubo
Phys. Rev. Lett. 109, 147005 – Published 4 October 2012

Abstract

We report the molecular dipole effect on conduction electrons in the title superconductor. The angular-dependent magnetoresistance has a peak for fields nearly parallel to the conducting layer, and the peak width scales as the field component perpendicular to the layer, indicating incoherent interlayer transport. However, two closed Fermi surfaces are observed in quantum oscillation. Accordingly, crystallographically independent layers have different charge densities in a bulk single crystal. The electric dipole of tetrahydrofuran gives rise to interlayer charge disproportionation.

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  • Received 11 June 2012

DOI:https://doi.org/10.1103/PhysRevLett.109.147005

© 2012 American Physical Society

Authors & Affiliations

Tadashi Kawamoto1,*, Takehiko Mori1, David Graf2, James S. Brooks2, Yamaguchi Takahide3, Shinya Uji3, Takashi Shirahata4, and Tatsuro Imakubo5

  • 1Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
  • 2National High Magnetic Field Laboratory and Department of Physics, Florida State University, Tallahassee, Florida 32310, USA
  • 3National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan
  • 4Department of Applied Chemistry, Ehime University, Ehime 790-8577, Japan
  • 5Department of Materials Science and Technology, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan

  • *kawamoto@o.cc.titech.ac.jp

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Vol. 109, Iss. 14 — 5 October 2012

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