Control of electronic properties of α-(BEDT-TTF)2MHg(SCN)4 (M = K, NH4) by the uniaxial strain method

M. Maesato, Y. Kaga, R. Kondo, S. Kagoshima

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51 Citations (Scopus)

Abstract

Systematic uniaxial strain studies of α-(BEDT-TTF)2MHg(SCN)4 (M = K, NH4) have been carried out. By controlling the in-plane lattice parameters a and c independently, we find that both compounds have essentially the same phase diagram in electronic properties, although, under the hydrostatic pressures, they show quite different phase diagrams. The K salt shows the superconductivity like NH4 salt under the c-axis uniaxial strain, and the latter undergoes a transition to the density-wave state like the former under the a-axis uniaxial strain. These changes in electronic structures are verified by measuring the angle-dependent magnetoresistance. The electronic properties of these compounds can be systematically understood as a function of c/a, the ratio of the in-plane lattice parameters.

Original languageEnglish
Article number155104
Pages (from-to)1551041-1551048
Number of pages8
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number15
Publication statusPublished - Oct 15 2001
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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