Results 31 to 40 of about 878,894 (294)

In operando cryo-STEM of pulse-induced charge density wave switching in TaS2

Nature Communications, 2023
The charge density wave material 1T-TaS2 exhibits a pulse-induced insulator-to-metal transition, which shows promise for next-generation electronics such as memristive memory and neuromorphic hardware.
James L. Hart, Saif Siddique, Noah Schnitzer, Stephen D. Funni, Lena F. Kourkoutis, Judy J. Cha   +5 more
doaj   +1 more source

Island-Type Graphene-Nanotube Hybrid Structures for Flexible and Stretchable Electronics: In Silico Study

Micromachines, 2023
Using the self-consistent charge density functional tight-binding (SCC-DFTB) method, we study the behavior of graphene-carbon nanotube hybrid films with island topology under axial deformation.
Michael M. Slepchenkov, Pavel V. Barkov, Olga E. Glukhova   +2 more
doaj   +1 more source

Demonstration of stable long-term operation of a kilohertz laser-plasma accelerator

Physical Review Accelerators and Beams, 2020
We report on the stable and continuous operation of a kilohertz laser-plasma accelerator. Electron bunches with 2.6 pC charge and 2.5 MeV peak energy were generated via injection and trapping in a downward plasma density ramp. This density transition was
L. Rovige, J. Huijts, I. Andriyash, A. Vernier, V. Tomkus, V. Girdauskas, G. Raciukaitis, J. Dudutis, V. Stankevic, P. Gecys, M. Ouille, Z. Cheng, R. Lopez-Martens, J. Faure   +13 more
doaj   +1 more source

van der Waals driven anharmonic melting of the 3D charge density wave in VSe2

Nature Communications, 2021
The nature of the charge density wave transition in VSe2 is still debated. Here, the authors demonstrate that the transition is mainly driven by electron-phonon interactions, despite the presence of the Fermi-surface nesting, and that Wan-der-Waals ...
Josu Diego, A. H. Said, S. K. Mahatha, Raffaello Bianco, Lorenzo Monacelli, Matteo Calandra, Francesco Mauri, K. Rossnagel, Ion Errea, S. Blanco-Canosa   +9 more
doaj   +1 more source

Density-Dependent Electron Transport and Precise Modeling of GaN HEMTs

, 2015
We report on the direct measurement of two-dimensional sheet charge density dependence of electron transport in AlGaN/GaN high electron mobility transistors.
Akyol, Fatih, Bajaj, Sanyam, Chumbes, Eduardo M., Hung, Ting-Hsiang, Khurgin, Jacob, Krishnamoorthy, Sriram, Park, Pil Sung, Rajan, Siddharth, Reza, Shahed, Shoron, Omor F.   +9 more
core   +1 more source

Modeling of tribo-charge density using a transition matrix element in a TENG system: Approximate calculation

Results in Physics, 2019
Induced tribo-charge density (σ) is calculated quantum mechanically by the charge transfer between a metal and a polymer using a transition matrix element, |MAB|.
SeongMin Kim
doaj   +1 more source

Alternative route to charge density wave formation in multiband systems

, 2013
Charge and spin density waves, periodic modulations of the electron and magnetization densities, respectively, are among the most abundant and non-trivial low-temperature ordered phases in condensed matter.
A. F. Kemper, Caprara, E. A. Nowadnick, Emery, Grilli, H.-M. Eiter, Hamlin, I. R. Fisher, J. G. Analytis, J.-H. Chu, L. Degiorgi, M. Lavagnini, R. Hackl, Shastry, T. P. Devereaux, Weber, Yusupov   +16 more
core   +1 more source

Maximal charge injection of a uniform separated electron pulse train in a drift space

Physical Review Special Topics. Accelerators and Beams, 2015
A charge sheet model is proposed to study the space charge effect and uniformity of charge separation of an electron pulse train in a drift space. An analytical formula is derived for the charge density limit as a function of gap spacing, injecting ...
Y. L. Liu, P. Zhang, S. H. Chen, L. K. Ang   +3 more
doaj   +1 more source

Non-coplanar magnetism, topological density wave order and emergent symmetry at half-integer filling of moiré Chern bands

SciPost Physics, 2023
Twisted double- and mono-bilayer graphene are graphene-based moiré materials hosting strongly correlated fermions in a gate-tunable conduction band with a topologically non-trivial character.
Patrick H. Wilhelm, Thomas C. Lang, Mathias S. Scheurer, Andreas Martin Läuchli Herzig
doaj   +1 more source

Crystallization of fractional charges in a strongly interacting quasi-helical quantum dot

, 2015
The ground-state electron density of a one-dimensional spin-orbit coupled quantum dot with a Zeeman term and strong electron interaction is studied at the fractional helical liquid points.
Barbarino, S., Cavaliere, F., Gambetta, F. M., Sassetti, M.   +3 more
core   +1 more source