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The structure of the low-temperature form of 1T-TaSe 2 has been studied by X-ray diffraction. The symmetry of this form is triclinic (a = b = 12.54 A ; c = 9.36 A ; α = 101.9°; β = 43.8°; γ = 120°), but twinning suggests trigonal symmetry. The content of the triclinic...
Single crystals of 1T-TaSe 2 have been intercalated with different alkali metals by deposition in ultra-high vacuum onto in situ-cleaved (0001) surfaces. In a second step a different alkali metal, or Cl 2 , has been deposited on top. The interactions among the deposited species and the ...
Spectroscopic imaging of isolated single-layer 1T-TaSe2 reveals long-wavelength super-modulations at Hubbard band energies, consistent with the predicted behaviour of itinerant spinons. These super-modulations allow the direct experimental measurement of the spinon Fermi wavevector, in good agreement with...
A. Zone-Folded Phonons and the Commensurate-Incommensurate Charge-Density-Wave Transition in 1T-TaSe2 Thin Films. Nano Lett. 2015, 15, 2965-2973.Samnakay, R.; Wickramaratne, D.; Pope, T.; Lake, R.; Salguero, T.; Balandin, A. Zone- Folded Phonons and the Commensurate-Incommensurate ...
Four-dimensional ultrafast transmission electron microscopy (4D-UTEM)measurements reveal a rich variety of structural dynamic phenomena at a phasetransition in the charge-density-wave (CDW) 1T-TaSe2. Through thephotoexcitation, remarkable changes on both the CDW intensity and orientationare clearly ...
The structure of the low-temperature form of 1T-TaSe 2 has been studied by X-ray diffraction. The symmetry of this form is triclinic (a = b = 12.54 A ; c = 9.36 A ; α = 101.9°; β = 43.8°; γ = 120°), but twinning suggests trigonal symmetry. The content of the triclinic...
Here we perform an investigation on a typical TMD system, 1TTaSe2xTex (0≤x≤2). Doping-induced disordered distribution of Se/Te suppresses CDWs in 1TTaSe2. A domelike superconducting phase with the maximum Tconset of 2.5 K was observed near CDWs. The superconducting volume is very small...
Four-dimensional ultrafast transmission electron microscopy (4D-UTEM)measurements reveal a rich variety of structural dynamic phenomena at a phasetransition in the charge-density-wave (CDW) 1T-TaSe2. Through thephotoexcitation, remarkable changes on both the CDW intensity and orientationare clearly observ...
The scanning tunnelling microscopy (STM) images of charge density waves (CDW) in transition-metal dichalcogenide 1T-TaSe2 are theoretically simulated through a realistic electronic structure calculation. The simulation of STM/STS spectrum is executed by means of surface local-density of states (LDOS)...