scholarly journals Negative differential resistance observed on the charge density wave of a transition metal dichalcogenide

Nanoscale ◽  
2019 ◽  
Vol 11 (46) ◽  
pp. 22351-22358 ◽  
Author(s):  
Adina Luican-Mayer ◽  
Yuan Zhang ◽  
Andrew DiLullo ◽  
Yang Li ◽  
Brandon Fisher ◽  
...  
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Voltage Pulse ◽  
Negative Differential Resistance ◽  
Charge Density Wave ◽  
Density Wave ◽  
Differential Resistance ◽  
Charge Density Waves ◽  
Transition Metal Dichalcogenide ◽  
Physical Phenomena

Charge density waves and negative differential resistance are seemingly unconnected physical phenomena but they coexist after a voltage pulse manipulation on TaS2 surface with an STM tip.

Phase stability of transition metal dichalcogenide by competing ligand field stabilization and charge density wave

2D Materials ◽  
2015 ◽  
Vol 2 (3) ◽  
pp. 035019 ◽  
Author(s):  
Santosh K C ◽  
Chenxi Zhang ◽  
Suklyun Hong ◽  
Robert M Wallace ◽  
Kyeongjae Cho
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Phase Stability ◽  
Charge Density Wave ◽  
Density Wave ◽  
Ligand Field ◽  
Transition Metal Dichalcogenide

Achieving Room‐Temperature Charge Density Wave in Transition Metal Dichalcogenide 1 T ‐VSe 2

2020 ◽  
Vol 6 (5) ◽  
pp. 1901427
Author(s):  
Jiajia Feng ◽  
Resta A. Susilo ◽  
Bencheng Lin ◽  
Wen Deng ◽  
Yanju Wang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Charge Density Wave ◽  
Room Temperature ◽  
Density Wave ◽  
Transition Metal Dichalcogenide

Epitaxial Growth and Charge Density Wave of TaSe2

1991 ◽  
Vol 230 ◽  
Author(s):  
Toshihiro Shimada ◽  
Fumio S. Ohuchi ◽  
Bruce A. Parkinson
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Epitaxial Growth ◽  
Ultrathin Films ◽  
Charge Density Wave ◽  
Density Wave ◽  
Transition Metal Dichalcogenides ◽  
Charge Density Waves ◽  
Density Waves ◽  
Metal Dichalcogenides

AbstractWe report an epitaxial growth of TaSe2, a family of transition metal dichalcogenides that exhibit Charge Density Waves (CDW). The films that have been characterized with RHEED, LEED, XPS and STM showed two different phases. Occurrence of CDW in the ultrathin films has been detected by XPS and LEED.

scholarly journals Novel Mechanism of a Charge Density Wave in a Transition Metal Dichalcogenide

2007 ◽  
Vol 99 (21) ◽  
Author(s):  
D. W. Shen ◽  
B. P. Xie ◽  
J. F. Zhao ◽  
L. X. Yang ◽  
L. Fang ◽  
...  
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Transition Metal Dichalcogenide ◽  
A Charge

scholarly journals Survey of the Thermodynamic Properties of the Charge Density Wave Systems

2019 ◽  
Vol 2019 ◽  
pp. 1-14 ◽  
Author(s):  
M. Saint-Paul ◽  
P. Monceau
Keyword(s):  
Phase Transition ◽  
Transition Metal ◽  
Thermodynamic Properties ◽  
Charge Density ◽  
Specific Heat ◽  
Temperature Dependence ◽  
Charge Density Wave ◽  
Mean Field Theory ◽  
Density Wave ◽  
Transition Metal Dichalcogenide

We reexamine the thermodynamic properties such as specific heat, thermal expansion, and elastic constants at the charge density wave (CDW) phase transition in several one- and two-dimensional materials. The amplitude of the specific heat anomaly at the CDW phase transition TCDW increases with increasing TCDW and a tendency to a lineal temperature dependence is verified. The Ehrenfest mean field theory relationships are approximately satisfied by several compounds such as the rare earth tritelluride compound TbTe3, transition metal dichalcogenide compound 2H-NbSe2, and quasi-one-dimensional conductor K0.3MoO3. In contrast inconsistency exists in the Ehrenfest relationships with the transition metal dichalcogenide compounds 2H-TaSe2 and TiSe2 having a different thermodynamic behavior at the transition temperature TCDW. It seems that elastic properties in the ordered phase of most of the compounds are related to the temperature dependence of the order parameter which follows a BCS behavior.

CHARGE DENSITY WAVE TRANSITIONS IN TWO-DIMENSIONAL TRANSITION METAL BRONZES AND OXIDES

1993 ◽  
Vol 07 (23n24) ◽  
pp. 3973-4003 ◽  
Author(s):  
P. FOURY ◽  
J.P. POUGET
Keyword(s):  
Transition Metal ◽  
Charge Density ◽  
Ground State ◽  
Charge Density Wave ◽  
Density Wave ◽  
Electron Localization ◽  
Two Dimensional ◽  
Fermi Surfaces ◽  
A Charge ◽  
Structural Instabilities

The structural instabilities towards the formation of a charge density wave (CDW) ground state exhibited by several layered Mo and W bronzes and oxides are reviewed. It is shown that in these two-dimensional (2D) metals, including the purple bronzes A x Mo 6 O 17 (A=K, Na, Tl; x≈1), the γ and η phases of MO 4 O 11 and the monophosphate tungsten bronzes with pentagonal tunnels ( PO 2)4 ( WO 3)2m(m=4, 6, 7), the CDW instability can be associated with particular chains of MoO 6 or WO 6 octahedra of the ReO 3 type slabs along which there is a strong overlap of the t 2g orbitals. The CDW critical wave vectors of the purple bronzes, Mo 4 O 11 and the tungsten bronzes with m=4 and 6 lead to a common nesting between differently oriented 1D Fermi surfaces. It is suggested that the anharmonic CDW modulation, which occurs in the tungsten bronzes with m≥7, could be the structural fingerprint of electron localization effects.

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