Charge-density waves and superlattices in the metallic layered transition metal dichalcogenides

  title={Charge-density waves and superlattices in the metallic layered transition metal dichalcogenides},
  author={J. A. Wilson and F. J. Di Salvo and S. Mahajan},
  journal={Advances in Physics},
  pages={1171 - 1248}
The d1 layer metals TaS 2 , TaSe 2 , NbSe 2 , in all their various polytypic modifications, acquire, below some appropriate temperature, phase conditions that their electromagnetic properties have previously revealed as 'anomalous'. Our present electron-microscopic studies indicate that this anomalous behaviour usually included the adoption, at some stage, of a superlattice. The size of superlattice adopted often is forecast in the pattern of satellite spotting and strong diffuse scattering… Expand
33 Citations
Strain-induced stripe phase in charge-ordered single layer NbSe2
Charge density waves are ubiquitous phenomena in metallic transition metal dichalcogenides. In NbSe2, a triangular 3 × 3 structural modulation is coupled to a charge modulation. Recent experimentsExpand
Coexistence of Superconductivity with Enhanced Charge-Density Wave Order in the Two-Dimensional Limit of TaSe2.
The enhanced superconductivity in the CDW state of monolayer 1H-TaSe2 observed in recent experiments is demonstrated by first-principles calculations including the explicit calculation of the screened Coulomb interaction to uncover simultaneously enhanced CDW and superconducting orders in two-dimensional limit for the first time. Expand
Large enhancement of the CDW resistivity anomaly and traces of superconductivity in imperfect samples of NbTe4
  • B. de Lima, N. Chaia, +5 authors A.J.S. Machado
  • Materials Science
  • Materials Chemistry and Physics
  • 2019
Abstract Transition metal chalcogenides usually crystallize in low-dimensional structures that frequently host electronic instabilities such as charge density waves (CDW) and superconductivity. AmongExpand
Visualizing the Anomalous Charge Density Wave States in Graphene/NbSe2 Heterostructures.
The findings propose a new criterion to determine the TCDW through monitoring the line shape of the A1g mode and discover the 2D band is also discovered as an indicator to observe the CDW transitions. Expand
Charge Density Waves in Electron-Doped Molybdenum Disulfide
We present the discovery of a charge density wave (CDW) ground state in heavily electron-doped molybdenum disulfide (MoS2). This is the first observation of a CDW in any d2 (column 6) transitionExpand
Gate-tunable superconductivity and charge-density wave in monolayer 1T'-MoTe2 and 1T'-WTe2.
  • Jun-Ho Lee, Young-Woo Son
  • Medicine
  • Physical chemistry chemical physics : PCCP
  • 2021
The robust resurgence of the QSH state coexisting with the CDW phase is shown to originate from band inversions induced by the nonsymmorphic lattice distortion through the strong electron-phonon interaction, thus suggesting the realization of various interfacial states between superconducting states, and various CDW and topological states on a two-dimensional crystal by inhomogeneous gating or doping. Expand
Pressure induced superconductive 10-fold coordinated TaS2: a first-principles study.
  • Kai Hu, Q. Chen, Sheng-Yi Xie
  • Medicine, Materials Science
  • Journal of physics. Condensed matter : an Institute of Physics journal
  • 2019
The authors' calculations suggest that the lone pair electrons of S in 1T-TaS2, which keep the stablity of the layered structure, will be activated by pressure and participate the chemical bonding with Ta, to form the high-pressure C2/m and I4/mmm phases. Expand
Inversion-Protected Higher-Order Topological Superconductivity in Monolayer WTe_{2}.
Surprisingly, it is found that the spin-triplet phases in the authors' phase diagram all host Majorana modes localized on two opposite corners, suggesting superconducting monolayer WTe_{2} is a playground for higher-order topological superconductivity and possibly the first material realization for inversion-protected Majorana corner modes without utilizing proximity effect. Expand
Strain-controlled magnetic and optical properties of monolayer 2H−TaSe2
First-principles calculations are used to probe the effects of mechanical strain on the magnetic and optical properties of monolayer (ML) 2H-TaSe$_2$. A complex dependence of these physicalExpand
Atomic-Scale Edge Morphology, Stability, and Oxidation of Single-Layer 2H-TaS2.
The XPS calculation shows that specific initial steps of oxidative process are unlikely to be distinguished in the XPS spectra due to small shift of respective binding energies, but initial edge oxidation of TaS2 should be observable by an asymmetry of the Ta 4f doublet towards higher binding energies. Expand


Electronic Structure and Related Properties of Actinides
  • 1974
Please note this table is meant to provide a representative and not an exhaustive documentation of existing data
  • References: a Benda
  • 1973
X-Ray Di€ . in Crystals, Imperfect Crystals and Amorphous Bodies, Eng
  • Bull. Am. phys. Soc.,
  • 1973
SalvoÐearlier results updated
  • 1972
PhD thesis, Groningen, Neth.: see also J. less-common Metals
  • 1969
Ðthesis; k Reveli (1973)Ðthesis; l Schwall (1973)Ðthesis; m Thompson
  • 1969