Results 81 to 90 of about 1,956,567 (332)
Dislocation Kinks in Copper: Widths, Barriers, Effective Masses, and Quantum Tunneling [PDF]
, 2000 We calculate the widths, migration barriers, effective masses, and quantum tunneling rates of kinks and jogs in extended screw dislocations in copper, using an effective medium theory interatomic potential.
A. Hikata +39 more
core +2 more sources
Advanced Functional Materials, EarlyView.A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu +9 more
wiley +1 more source
Artificial molecular quantum rings: Spin density functional theory calculations
, 2007 The ground states of artificial molecules made of two vertically coupled quantum rings are studied within the spin density functional theory for systems containing up to 13 electrons.
B. Partoens +6 more
core +1 more source
Scaling analysis and instantons for thermally assisted tunneling and quantum Monte Carlo simulations [PDF]
, 2016 We develop an instantonic calculus to derive an analytical expression for the thermally-assisted tunneling decay rate of a metastable state in a fully connected quantum spin model. The tunneling decay problem can be mapped onto the Kramers escape problem
Zhang Jiang +6 more
semanticscholar +1 more source
Advanced Functional Materials, EarlyView.A solvent‐free mechanochemistry‐enabled supramolecular engineering strategy is developed to directly synthesize covalent‐interconnected two‐dimensional atomic‐layered carbon nitride nanosheets photocatalyst, bypassing conventional top‐down exfoliation requirements.
Fanglei Yao +7 more
wiley +1 more source
Hallmarks of tunneling dynamics with broken reflective symmetry
Nuclear Physics B, 2021 We study features of tunneling dynamics in an exactly-solvable model of N=4 supersymmetric quantum mechanics with a multi-well potential and with broken reflective symmetry.
V.P. Berezovoj +2 more
doaj +1 more source
Black hole entropy, log corrections and quantum ergosphere [PDF]
, 2005 Quantum-gravity corrections to the probability of emission of a particle from a black hole in the Parikh-Wilczek tunneling framework are studied. We consider the effects of zero-point quantum fluctuations of the metric on the emission probability for a ...
Amelino-Camelia +25 more
core +3 more sources
MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance
Advanced Functional Materials, EarlyView.Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley +1 more source
Global optimization in variational quantum algorithms via dynamic tunneling method
New Journal of PhysicsWe present a global optimization routine for the variational quantum algorithms, which utilizes the dynamic tunneling flow. Originally designed to leverage information gathered by a gradient-based optimizer around local minima, we adapt the conventional ...
Seung Park +3 more
doaj +1 more source
Large terahertz electric dipole of a single graphene quantum dot
Physical Review Research, 2022 Graphene has recently emerged as an important material for optoelectronic applications owing to its unique properties. Here, we show that graphene is also appealing for the development of THz quantum optics when used for quantum dots.
Simon Messelot +14 more
doaj +1 more source