Results 31 to 40 of about 98,774 (285)
Electric Pulse Induced Resistive Switching, Electronic Phase Separation, and Possible Superconductivity in a Mott insulator [PDF]
Advanced Materials 20, 2760-2765 (2008), 2009 Metal-insulator transitions (MIT) belong to a class of fascinating physical phenomena, which includes superconductivity, and colossal magnetoresistance (CMR), that are associated with drastic modifications of electrical resistance. In transition metal compounds, MIT are often related to the presence of strong electronic correlations that drive the ...
arxiv +1 more source
Electric-Field-Induced Antiferromagnetic Insulating State in a Metallic Ferromagnet [PDF]
J. Phys. Soc. Jpn. 89, 095001 (2020), 2020 We show that a static electric field induces the transition from a ferromagnetic metal to an antiferromagnetic insulator owing to the Bloch oscillation of conduction electrons. In the steady state, the electric current is inversely proportional to the applied electric field, implying the nonperturbative insulating nature that is different from the ...
arxiv +1 more source
Bulk Topological Invariants in Noninteracting Point Group Symmetric Insulators [PDF]
Phys. Rev. B 86, 115112 (2012), 2012 We survey various quantized bulk physical observables in two- and three-dimensional topological band insulators invariant under translational symmetry and crystallographic point group symmetries (PGS). In two-dimensional insulators, we show that: (i) the Chern number of a $C_n$-invariant insulator can be determined, up to a multiple of $n$, by ...
arxiv +1 more source
Electric-Field-Induced Resistive Switching in a Family of Mott Insulators : towards Non-Volatile Mott-RRAM Memories [PDF]
Advanced Materials 22, 45 (2010) 5193, 2013 The fundamental building blocks of modern silicon-based microelectronics, such as double gate transistors in non-volatile Flash memories, are based on the control of electrical resistance by electrostatic charging. Flash memories could soon reach their miniaturization limits mostly because reliably keeping enough electrons in an always smaller cell ...
arxiv +1 more source
Electric field driven quantum phase transition between band insulator and topological insulator [PDF]
, 2009 We demonstrate theoretically that electric field can drive a quantum phase transition between band insulator to topological insulator in CdTe/HgCdTe/CdTe quantum wells. The numerical results suggest that the electric field could be used as a switch to turn on or off the topological insulator phase, and temperature can affect significantly the phase ...
arxiv +1 more source
DronesThe global rise in electricity demand necessitates extensive transmission infrastructure, where insulators play a critical role in ensuring the safe operation of power transmission systems.
Shangzhe Sun +8 more
doaj +1 more source
Quantum Sensing of Insulator-to-Metal Transitions in a Mott Insulator [PDF]
Adv. Quantum Technol. 2000142 (2021), 2020 Nitrogen vacancy (NV) centers, optically-active atomic defects in diamond, have attracted tremendous interest for quantum sensing, network, and computing applications due to their excellent quantum coherence and remarkable versatility in a real, ambient environment.
arxiv +1 more source
Electric polarization in correlated insulators [PDF]
Physical Review B, 2013 We derive a formula for the electric polarization of interacting insulators, expressed in terms of the full Green's and vertex functions. We exemplify this method in the half-filled ionic Hubbard model treated within dynamical mean field theory (DMFT).
Gabriel Kotliar, Reza Nourafkan
openaire +3 more sources
Autonomous Vision-Based Primary Distribution Systems Porcelain Insulators Inspection Using UAVs
Sensors, 2021 The early detection of damaged (partially broken) outdoor insulators in primary distribution systems is of paramount importance for continuous electricity supply and public safety.
Ehab Ur Rahman +4 more
doaj +1 more source
A Novel Digitalization Approach for Smart Materials – Ontology‐Based Access to Data and Models
Advanced Engineering Materials, EarlyView.In order to access heterogeneous material data and model‐based knowledge, the established ontology‐based data access (OBDA) is extended to include material models. This novel ontology‐based data and model access (OBDMA) enables the computation of new responses beyond stored data.
Jürgen Maas +15 more
wiley +1 more source