Results 11 to 20 of about 11,906 (259)

In situ spectroscopic ellipsometry as a pathway toward achieving VO2 stoichiometry for amorphous vanadium oxide with magnetron sputtering

open access: yesAIP Advances, 2021
As a special class of materials, transition metal oxides exhibit in their crystalline phase a variety of interesting properties, such as metal–insulator transition, ferroelectricity, magnetism, superconductivity, and so forth.
C. Xu   +4 more
doaj   +1 more source

Metal-to-insulator transition in an Anderson insulator with Kondo impurities

open access: yesPhysical Review Research, 2022
We report a voltage-controlled critical behavior observed in a GaAs epitaxial structure containing a dense array of ErAs nanoparticles. When fabricated with metal electrodes, the structure displays a voltage- and temperature-dependent metal-to-insulator ...
Weidong Zhang   +2 more
doaj   +1 more source

Spatially Distributed Ramp Reversal Memory in VO2

open access: yesAdvanced Electronic Materials, 2023
Ramp‐reversal memory has recently been discovered in several insulator‐to‐metal transition materials where a non‐volatile resistance change can be set by repeatedly driving the material partway through the transition.
Sayan Basak   +7 more
doaj   +1 more source

Embedded metallic nanoparticles facilitate metastability of switchable metallic domains in Mott threshold switches

open access: yesNature Communications, 2022
Control of percolative dynamics of metal and insulator domains during electrically triggered insulator-metal transition underlies applications in energy-efficient switches. Jo et al. show that embedded metallic nanoparticles enhance the metastability and
Minguk Jo   +6 more
doaj   +1 more source

Epitaxial growth of higher transition-temperature VO2 films on AlN/Si

open access: yesAPL Materials, 2016
We report the epitaxial growth and the mechanism of a higher temperature insulator-to-metal-transition (IMT) of vanadium dioxide (VO2) thin films synthesized on aluminum nitride (AlN)/Si (111) substrates by a pulsed-laser-deposition method; the IMT ...
Tetiana Slusar   +4 more
doaj   +1 more source

Metal-Insulator Transition from Graphene to Graphane

open access: yesNanomaterials and Nanotechnology, 2013
Graphane is obtained by perfectly hydrogenating graphene. There exists an intermediate material, partially hydrogenated graphene (which we call hydrographene), interpolating from pure graphene to pure graphane.
Motohiko Ezawa
doaj   +1 more source

Non-thermal resistive switching in Mott insulator nanowires

open access: yesNature Communications, 2020
Despite intensive research on the electrically driven insulator-to-metal transition, this phenomenon is not well understood. Using quasi 1D nanowires of two Mott insulators, the authors reveal the central role of defects in enabling a non-thermal doping ...
Yoav Kalcheim   +5 more
doaj   +1 more source

Pressure-induced transition from a Mott insulator to a ferromagnetic Weyl metal in La2O3Fe2Se2

open access: yesNature Communications, 2023
The insulator-metal transition in Mott insulators, known as the Mott transition, is usually accompanied with various novel quantum phenomena, such as unconventional superconductivity, non-Fermi liquid behavior and colossal magnetoresistance.
Ye Yang   +8 more
doaj   +1 more source

Optimizing VO2 film properties for use in SAW devices

open access: yesJournal of Advanced Dielectrics, 2021
The aim of this study is to optimize the conditions for producing thin VO2 films for their use in SAW devices. We used the pulsed laser deposition (PLD) method to produce VO2 films. We used a metallic vanadium target.
M. E. Kutepov   +5 more
doaj   +1 more source

The phase diagram of the square lattice bilayer Hubbard model: a variational Monte Carlo study

open access: yesNew Journal of Physics, 2014
We investigate the phase diagram of the square lattice bilayer Hubbard model at half-filling with the variational Monte Carlo method for both the magnetic and the paramagnetic case as a function of the interlayer hopping ${{t}_{\bot }}$ and on-site ...
Robert Rüger   +3 more
doaj   +1 more source

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