Results 31 to 40 of about 11,906 (259)

Dynamics of an Electrically Driven Phase Transition in Ca2RuO4 Thin Films: Nonequilibrium High‐Speed Resistive Switching in the Absence of an Abrupt Thermal Transition

Advanced Electronic Materials, 2023
In Mott‐type resistive switching phenomena, which are based on the metal–insulator transition in strongly correlated materials, the presence of an abrupt temperature‐driven transition in the material is considered essential for achieving high‐speed and ...
Keiji Tsubaki, Atsushi Tsurumaki‐Fukuchi, Takayoshi Katase, Toshio Kamiya, Masashi Arita, Yasuo Takahashi   +5 more
doaj   +1 more source

Diffusion and multifractality at the metal—insulator transition [PDF]

Philosophical Magazine B, 1998
We review the time evolution of wavepackets at the metal-insulator transition in two- and three-dimensional disordered systems. The importance of scale invariance and multifractal eigenfunction fluctuations is stressed. The implications of the frequency- and wavevector-dependence of the diffusion coefficient are compared with the results of numerical ...
Huckestein, Bodo, Klesse, Rochus
openaire   +2 more sources

Nano-Resolved Current-Induced Insulator-Metal Transition in the Mott Insulator Ca_{2}RuO_{4}

Physical Review X, 2019
The Mott insulator Ca_{2}RuO_{4} is the subject of much recent attention following reports of emergent nonequilibrium steady states driven by applied electric fields or currents.
Jiawei Zhang, Alexander S. McLeod, Qiang Han, Xinzhong Chen, Hans A. Bechtel, Ziheng Yao, S. N. Gilbert Corder, Thomas Ciavatti, Tiger H. Tao, Meigan Aronson, G. L. Carr, Michael C. Martin, Chanchal Sow, Shingo Yonezawa, Fumihiko Nakamura, Ichiro Terasaki, D. N. Basov, Andrew J. Millis, Yoshiteru Maeno, Mengkun Liu   +19 more
doaj   +1 more source

Ferroelectric control of metal–insulator transition [PDF]

Solid State Communications, 2016
We propose a method of controlling the metal-insulator transition of one perovskite material at its interface with a another ferroelectric material based on first principle calculations. The operating principle is that the rotation of oxygen octahedra tuned by the ferroelectric polarization can modulate the superexchange interaction in this perovskite.
He, Xu, Jin, Kui-juan, Ge, Chen, Ma, Zhong-shui, Yang, Guo-zhen   +4 more
openaire   +2 more sources

Metal-to-Insulator Transition in Ultrathin Manganite Heterostructures

Applied Sciences, 2019
Thickness-driven phase transitions have been widely observed in many correlated transition metal oxides materials. One of the important topics is the thickness-driven metal to insulator transition in half-metal La2/3Sr1/3MnO3 (LSMO) thin films, which has
Zhaoliang Liao, Jiandi Zhang
doaj   +1 more source

Dielectric catastrophe at the Wigner-Mott transition in a moiré superlattice

Nature Communications, 2022
The Wigner-Mott insulator is driven by extended Coulomb repulsion, rather than the on-site Coulomb repulsion of the Mott insulator. Here, the authors observe a continuous bandwidth-tuned transition between a metal and a Wigner-Mott insulator in a MoSe2 ...
Yanhao Tang, Jie Gu, Song Liu, Kenji Watanabe, Takashi Taniguchi, James C. Hone, Kin Fai Mak, Jie Shan   +7 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Photoelectron dispersion in metallic and insulating VO_{2} thin films

Physical Review Research, 2021
The underlying mechanism behind the metal-to-insulator transition in VO_{2} is still a topic of intense debate. The two leading theoretical interpretations associate the transition with either electron-lattice or electron-electron correlations.
Viktor Jonsson, Luca Piazza, Martin Månsson, Jonas Weissenrieder, Oscar Tjernberg, Sergiy Khartsev, Yasmine Sassa, Daniel G. Mazzone, Nicolas Gauthier, Matthias Muntwiler, Chin Shen Ong, Diana Iuşan, Patrik Thunström, Olle Eriksson   +13 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Landau theory for a metal-insulator transition [PDF]

Physical Review Letters, 1994
The nonlinear $\sigma$-model for disordered interacting electrons is studied in spatial dimensions $d>4$. The critical behavior at the metal-insulator transition is determined exactly, and found to be that of a standard Landau-Ginzburg-Wilson $\phi^4$-theory with the single-particle density of states as the order parameter.
, Kirkpatrick, , Belitz
openaire   +2 more sources