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  • Title: Dimerization-induced Fermi-surface reconstruction in IrTe2.
    Author: Eom MJ, Kim K, Jo YJ, Yang JJ, Choi ES, Min BI, Park JH, Cheong SW, Kim JS.
    Journal: Phys Rev Lett; 2014 Dec 31; 113(26):266406. PubMed ID: 25615364.
    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.
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