Structural phase transition and electronic structure evolution in Ir1-xPtxTe2 studied by scanning tunneling microscopy
The IrTe2 transition metal dichalcogenide undergoes a series of structural and electronic phase transitions when doped with Pt. The nature of each phase and the mechanism of the phase transitions have attracted much attention. In this paper, we report scanning tunneling microscopy and spectroscopy s...
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| creator | Ruan, Wei Tang, Peizhe Fang, Aifang Cai, Peng Ye, Cun Li, Xintong Duan, Wenhui Wang, Nanling Wang, Yayu |
| description | The IrTe2 transition metal dichalcogenide undergoes a series of structural and electronic phase transitions when doped with Pt. The nature of each phase and the mechanism of the phase transitions have attracted much attention. In this paper, we report scanning tunneling microscopy and spectroscopy studies of Pt doped IrTe2 with varied Pt contents. In pure IrTe2, we find that the ground state has a 1/6 superstructure, and the electronic structure is inconsistent with Fermi surface nesting induced charge density wave order. Upon Pt doping, the crystal structure changes to a 1/5 superstructure and then to a quasi-periodic hexagonal phase. First principles calculations show that the superstructures and electronic structures are determined by the global chemical strain and local impurity states that can be tuned systematically by Pt doping. |
| doi_str_mv | 10.48550/arxiv.1504.05295 |
| format | Article |
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The nature of each phase and the mechanism of the phase transitions have attracted much attention. In this paper, we report scanning tunneling microscopy and spectroscopy studies of Pt doped IrTe2 with varied Pt contents. In pure IrTe2, we find that the ground state has a 1/6 superstructure, and the electronic structure is inconsistent with Fermi surface nesting induced charge density wave order. Upon Pt doping, the crystal structure changes to a 1/5 superstructure and then to a quasi-periodic hexagonal phase. 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| subjects | Charge density waves Crystal structure Doping Electronic structure Fermi surfaces First principles Hexagonal phase Microscopy Nesting Organic chemistry Phase transitions Physics - Materials Science Physics - Superconductivity Platinum Scanning tunneling microscopy Superstructures Transition metal compounds |
| title | Structural phase transition and electronic structure evolution in Ir1-xPtxTe2 studied by scanning tunneling microscopy |
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