Surface phases of the transition-metal dichalcogenide IrTe2

Chen, Chen; Kim, Jisun; Yang, Yifan; Cao, Guixin; Jin, Rongying; Plummer, E. W.

doi:10.1103/physrevb.95.094118

Surface phases of the transition-metal dichalcogenide IrTe₂

Journal Article · Fri Mar 24 00:00:00 UTC 2017 · Physical Review B

DOI:https://doi.org/10.1103/physrevb.95.094118· OSTI ID:1678711

Chen, Chen ^[1]; Kim, Jisun ^[2]; Yang, Yifan ^[2]; Cao, Guixin ^[2]; Jin, Rongying ^[2]; Plummer, E. W. ^[2]

Louisiana State University, Baton Rouge, LA (United States); Louisiana State University
Louisiana State University, Baton Rouge, LA (United States)

Transition-metal dichalcogenide IrTe₂ has attracted attention because of its striped lattice, charge ordering, and superconductivity. We have investigated the surface structure of IrTe₂, using low-energy electron diffraction and scanning tunneling microscopy. A complex striped lattice modulation as a function of temperature is observed, which shows hysteresis between cooling and warming. While the bulk 5 × 1 and 8 × 1 phases appear at high temperatures, the surface ground state has the 6 × 1 phase, not seen in the bulk, and the surface transition temperatures are distinct from the bulk. Here, the broken symmetry at the surface creates a quite different phase diagram, with the coexistence of several periodicities resembling devil's staircase behavior.

View Accepted Manuscript (DOE)

Research Organization:: Louisiana State University, Baton Rouge, LA (United States)

Sponsoring Organization:: National Science Foundation; USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0012432

OSTI ID:: 1678711

Alternate ID(s):: OSTI ID: 1535867
OSTI ID: 1348282

Journal Information:: Physical Review B, Journal Name: Physical Review B Journal Issue: 9 Vol. 95; ISSN 2469-9950

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited By (3)

Charge-Stripe Order and Superconductivity in Ir1−xPtxTe2 Ivashko, O.; Yang, L.; Destraz, D. Scientific Reports, Vol. 7, Issue 1 https://doi.org/10.1038/s41598-017-16945-7	journal	December 2017
Misconceptions associated with the origin of charge density waves Zhu, Xuetao; Guo, Jiandong; Zhang, Jiandi Advances in Physics: X, Vol. 2, Issue 3 https://doi.org/10.1080/23746149.2017.1343098	journal	May 2017
Charge-stripe order and superconductivity in Ir1−xPtxTe2 Ivashko, O.; Yang, L.; Destraz, D. Nature Publishing Group https://doi.org/10.5167/uzh-145472	text	January 2017

Figures / Tables (9)

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Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
Low-energy electron diffraction
Phase diagrams
Scanning tunneling microscopy
Structural properties
Surface reconstruction
Transition-metal dichalcogenide