2015/05/04 by Hyo Sung Kim, Kim, Hyo Sung, Sooran Kim +11
Chemical Engineering · Chemistry · Materials Science · #Catalysis and Oxidation Reactions #Crystal Structures and Properties #FOS: Physical sciences #Inorganic Chemistry and Materials #Strongly Correlated Electrons (cond-mat.str-el)
paper · pdf · doi:10.48550/arxiv.1505.00538
openalex publication_date 2015/05/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report on the observation of a unique honeycomb charge ordering of the cleaved IrTe2 surface by high-resolution scanning tunneling microscopy (STM) and spectroscopy (STS). IrTe2 was recently established to exhibit intriguing stripe charge orderings. Here, we show that the stripe charge order coexists with a metastable honeycomb phase formed locally. The atomic and electronic structures of the honeycomb phase are consistent with the stripe phase indicating unambiguously its charge order nature. A simple model of the honeycomb structure is suggested based on the overlap of three degenerate stripe orders, which is analogous to the 3q state description of a skyrmion. We suggest that the honeycomb charge order can be a route to an exotic Dirac electron system.