Dimerization-Induced Fermi-Surface Reconstruction in IrTe2

Man Jin Eom; Kyoo Kim; Y. J. Jo; J. J. Yang; E. S. Choi; B. I. Min; J. -H. Park; S. -W. Cheong; Jun Sung Kim

doi:10.1103/PhysRevLett.113.266406

Dimerization-Induced Fermi-Surface Reconstruction in IrTe2

Strongly Correlated Electrons 2015-06-23 v1 Materials Science

Authors: Man Jin Eom , Kyoo Kim , Y. J. Jo , J. J. Yang , E. S. Choi , B. I. Min , J. -H. Park , S. -W. Cheong , Jun Sung Kim

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Abstract

We report a de Haas-van Alphen (dHvA) oscillation study on IrTe2 single crystals showing complex dimer formations. By comparing the angle dependence of dHvA oscillations with band structure calculations, we show distinct Fermi surface reconstruction induced by a 1/5-type and a 1/8-type dimerizations. This verifies that an intriguing quasi-two-dimensional conducting plane across the layers is induced by dimerization in both cases. A phase transition to the 1/8 phase with higher dimer density reveals that local instabilities associated with intra- and interdimer couplings are the main driving force for complex dimer formations in IrTe2.

Keywords

fermi surface

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@article{arxiv.1412.4924,
  title  = {Dimerization-Induced Fermi-Surface Reconstruction in IrTe2},
  author = {Man Jin Eom and Kyoo Kim and Y. J. Jo and J. J. Yang and E. S. Choi and B. I. Min and J. -H. Park and S. -W. Cheong and Jun Sung Kim},
  journal= {arXiv preprint arXiv:1412.4924},
  year   = {2015}
}

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5 pages, 4 figures, accepted in Phys. Rev. Lett

Dimerization-Induced Fermi-Surface Reconstruction in IrTe2

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