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We study the effects of the electromagnetic vacuum on the motion of a nonrelativistic electron. First, we derive the equation of motion for the expectation value of the electron's position operator. We show how this equation has the same…

量子物理 · 物理学 2023-06-02 Anirudh Gundhi , Angelo Bassi

We report on the application of a feedback-controlled electromigration technique for the formation of nanometer-sized gaps in mesoscopic gold wires and rings. The effect of current density and temperature, linked via Joule heating, on the…

介观与纳米尺度物理 · 物理学 2015-06-15 Birgit Kießig , Hilbert v. Löhneysen , Roland Schäfer

We describe our theoretical formalism and computational scheme for making ab-initio calculations of the dynamic paramagnetic spin susceptibilities of metals and alloys at finite temperatures. Its basis is Time-Dependent Density Functional…

强关联电子 · 物理学 2009-10-31 J. B. Staunton , J. Poulter , B. Ginatempo , E. Bruno , D. D. Johnson

In this letter, we theoretically study the electron mobility in few-layer MoxW1-xS2 as limited by various scattering mechanisms. The room temperature energy-dependent scattering times corresponding to polar longitudinal optical (LO) phonon,…

介观与纳米尺度物理 · 物理学 2015-09-15 Hareesh Chandrasekar , Digbijoy Neelim Nath

We have fabricated single-electron transistors from individual metal nanoparticles using a geometry that provides improved coupling between the particle and the gate electrode. This is accomplished by incorporating a nanoparticle into a gap…

凝聚态物理 · 物理学 2009-11-10 K. I. Bolotin , F. Kuemmeth , A. N. Pasupathy , D. C. Ralph

Transport properties of degenerate relativistic electrons along quantizing magnetic fields in neutron star crusts are considered. A kinetic equation is derived for the spin polarization density matrix of electrons. Its solution does not…

天体物理学 · 物理学 2011-05-23 A. Y. Potekhin

We validate the application of our recent orbital-free density functional theory (DFT) approach, [Phys. Rev. Lett. 113, 155006 (2014)], for the calculation of ionic and electronic transport properties of dense plasmas. To this end, we…

等离子体物理 · 物理学 2015-12-16 Travis Sjostrom , Jérôme Daligault

Photoemission experiments involve the motion of an electron near a conducting surface. This necessarily generates heat by ohmic losses from eddy currents. This inelastic scattering of the electrons will result in a downward shift in…

强关联电子 · 物理学 2007-05-23 Robert Haslinger , Robert Joynt

The transport of deformable particles through porous media underlies a wealth of applications ranging from filtration to oil recovery to the transport and spreading of biological agents. Using direct numerical simulations, we analyze the…

软凝聚态物质 · 物理学 2020-06-09 Brato Chakrabarti , Charles Gaillard , David Saintillan

In this work, we study the elastic scattering behavior of electron vortices when propagating through amorphous samples. We use a formulation of the multislice approach in cylindrical coordinates to theoretically investigate the…

材料科学 · 物理学 2021-03-22 Stefan Löffler , Stefan Sack , Thomas Schachinger

We simulate structure in the vicinity of different size nanovoids using a new variant of the Molecular Statics, wherein atomic structure in the vicinity of nanovoids and the parameters that define the displacements of atoms placed in…

材料科学 · 物理学 2022-02-02 A. V. Nazarov , A. P. Melnikov , A. A. Mikheev , I. V. Ershova

We present a theoretical study of the interaction of vacancies with a tilt grain boundary in aluminum based on the density functional theory. The grain boundary volume expansion and vacancy induced contraction are calculated and compared…

材料科学 · 物理学 2009-11-07 Gang Lu , Nicholas Kioussis

The vacancy concentration at finite temperatures is studied for a series of (CoCrFeMn)$_{1-x_\mathrm{Ni}}$Ni$_{x_\mathrm{Ni}}$ alloys by grand-canonical Monte-Carlo (MC) simulations. The vacancy formation energies are calculated from a…

材料科学 · 物理学 2021-06-28 Daniel Utt , Alexander Stukowski , Karsten Albe

Plasmon drag effect is studied theoretically and experimentally in gold films with a sine-wave height profile. Numerical simulations based on the modified electromagnetic momentum loss approach are shown to correctly describe the…

材料科学 · 物理学 2016-03-25 N. Noginova , M. LePain , V. Rono , S. Masshadi , R. Hussain , M. Durach

While methods based on density-functional perturbation theory have dramatically improved our understanding of electron-phonon contributions to transport in materials, methods for accurately capturing electron-electron scattering relevant to…

The interactions between electrons and lattice vibrational modes play the key role in determining the carrier transport properties, thermoelectric performance and other physical quantities related to phonons in semiconductors. However, for…

Previous formulations of heating and transport associated with strong magnetohydrodynamic (MHD) turbulence are generalized to incorporate separate internal energy equations for electrons and protons. Electron heat conduction is included.…

太阳与恒星天体物理 · 物理学 2015-05-13 B. Breech , W. H. Matthaeus , S. R. Cranmer , J. C. Kasper , S. Oughton

A fluctuating-valence impurity in a metal is quantum-critical unlike a Kondo impurity which has the properties of a local Fermi-liquid. A systematic theory for the fluctuating-valence lattice is constructed, based on the hybridization and…

强关联电子 · 物理学 2024-06-19 C. M. Varma

A theory describing the forces governing the self-assembly of nanoparticles at the solid-liquid interface is developed. In the process, new theoretical results are derived to describe the effect that the field penetration of a point-like…

介观与纳米尺度物理 · 物理学 2017-09-19 Ryan-Rhys Griffiths

Over the last few years, $ab~initio$ methods have become an increasingly popular tool to evaluate intrinsic carrier transport properties in 2D materials. The lack of experimental information, and the progress made in the development of DFT…

材料科学 · 物理学 2019-12-10 Gautam Gaddemane , Sanjay Gopalan , Maarten Van de Put , Massimo V Fischetti