Spatially-resolved electronic structure of stripe domains in IrTe2 through electronic structure microscopy
Abstract
Phase separation in the nanometer- to micrometer-scale is characteristic for correlated materials, for example, high temperature superconductors, colossal magnetoresistance manganites, Mott insulators, etc. Resolving the electronic structure with spatially-resolved information is critical for revealing the fundamental physics of such inhomogeneous systems yet this is challenging experimentally. Here by using nanometer- and micrometer-spot angle-resolved photoemission spectroscopies (NanoARPES and MicroARPES), we reveal the spatially-resolved electronic structure in the stripe phase of IrTe2. Each separated domain shows two-fold symmetric electronic structure with the mirror axis aligned along 3 equivalent directions, and 6 × 1 replicas are clearly identified. Moreover, such electronic structure inhomogeneity disappears across the stripe phase transition, suggesting that electronic phase with broken symmetry induced by the 6 × 1 modulation is directly related to the stripe phase transition of IrTe2. Our work demonstrates the capability of NanoARPES and MicroARPES in elucidating the fundamental physics of phase-separated materials.
- Publication:
-
Communications Physics
- Pub Date:
- December 2021
- DOI:
- 10.1038/s42005-021-00733-x
- arXiv:
- arXiv:2110.15194
- Bibcode:
- 2021CmPhy...4..229B
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics
- E-Print:
- Commun. Phys. 4, 229 (2021)