Cooling rate dependence of charge density wave phases in 1T-TaS2 studied by scanning tunneling microscopy and x-ray diffraction
Source abstract
Abstract
The role of dynamics in the charge density wave (CDW) phases of 1T-TaS2, especially in accessing metastable phases, is still under scrutiny. We investigated cooling rate dependence on low-temperature CDW phases in this material by scanning tunneling microscopy and x-ray diffraction. In the majority of cases, we found the typical low temperature commensurate CDW and identified no other differences between samples that were fast cooled vs slow cooled from room temperature. In rare cases (1/18 STM experiments and 1/30 XRD experiments), we found a multi-domain structure in the low temperature CDW. The domain structure and metallic behavior revealed by STM and STS measurements of this phase are in excellent agreement with the previously reported metallic mosaic CDW phase.
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Research context
OpenAlex topics: Molecular Junctions and Nanostructures · 2D Materials and Applications · Ferroelectric and Negative Capacitance Devices
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics and Astronomy, University of New Hampshire 1 , Durham, New Hampshire 03824,
Department of Physics, Brown University 2 , Providence, Rhode Island 02912,
Funding
National Science Foundation · U.S. Department of Energy
References (24)
Show source-provided references
1. 1T-TaS2 as a quantum spin liquid10.1073/pnas.1706769114 ↗
2. A metallic mosaic phase and the origin of Mott-insulating state in 1T-TaS210.1038/ncomms10956 ↗
3. Intertwined chiral charge orders and topological stabilization of the light-induced state of a prototypical transition metal dichalcogenide10.1038/s41535-019-0172-1 ↗
4. Modeling of networks and globules of charged domain walls observed in pump and pulse induced states10.1038/s41598-018-22308-7 ↗
5. Hidden CDW states and insulator-to-metal transition after a pulsed femtosecond laser excitation in layered chalcogenide 1T-TaS2−xSex10.1126/sciadv.aas9660 ↗
6. Encoding multistate charge order and chirality in endotaxial heterostructures10.1038/s41467-023-41780-y ↗
7. Possible strain induced Mott gap collapse in 1T-TaS210.1038/s42005-019-0247-0 ↗
8. Visualizing the evolution from Mott insulator to Anderson insulator in Ti-doped 1T-TaS210.1038/s41535-021-00415-5 ↗
9. Observation of the metallic mosaic phase in 1T-TaS2 at equilibrium10.1103/physrevmaterials.7.064005 ↗
10. Memristive phase switching in two-dimensional 1T-TaS2 crystals10.1126/sciadv.1500606 ↗
11. Origin of the insulating phase and first-order metal-insulator transition in 1T-TaS210.1103/physrevlett.122.106404 ↗
12. Mottness versus unit-cell doubling as the driver of the insulating state in 1T-TaS210.1038/s41467-020-16132-9 ↗
13. The evidence of stacking disorder from dielectric response along the c-axis in the commensurate CDW phase in bulk 1T-TaS210.1016/j.ssc.2020.113946 ↗
14. Band insulator to Mott insulator transition in 1T-TaS210.1038/s41467-020-18040-4 ↗
15. Nanoscale electronic inhomogeneities in 1T-TaS210.1103/physrevmaterials.8.034002 ↗
16. Transitions between semiconducting and metallic phases in 1T-TaS210.1016/0038-1098(71)90444-3 ↗
17. Ultrafast modulations and detection of a ferro-rotational charge density wave using time-resolved electric quadrupole second harmonic generation10.1103/physrevlett.127.126401 ↗
18. Nanoscale manipulation of the Mott insulating state coupled to charge order in 1T-TaS210.1038/ncomms10453 ↗
19. Ultrafast manipulation of mirror domain walls in a charge density wave10.1126/sciadv.aau5501 ↗
20. Two-dimensional charge order stabilized in clean polytype heterostructures10.1038/s41467-021-27947-5 ↗
21. Realization of a metallic state in 1T-TaS2 with persisting long-range order of a charge density wave10.1103/physrevlett.123.206405 ↗
22. Influence of defects on charge–density–wave and superconductivity in 1T-TaS2 and 2H-TaS2 systems10.1016/j.physc.2013.06.002 ↗
23. Distinguishing a mott insulator from a trivial insulator with atomic adsorbates10.1103/physrevlett.126.196405 ↗
24. WSXM: a software for scanning probe microscopy and a tool for nanotechnology.10.1063/1.2432410 ↗