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A general model for treating the effects of three dimensional interface roughness (IFR) in layered semiconductor structures has been derived and experimentally verified. Configurational averaging of the IFR potential produces an effective…

Materials Science · Physics 2017-10-10 Alex Y. Song , Rajaram Bhat , Pierre Bouzi , Chung-En Zah , Claire F. Gmachl

Recent research suggests that the supercritical state consists of liquidlike and gaslike states where particle dynamics and key system properties are qualitatively different. We report experimental evidence of the structural crossover in…

Materials Science · Physics 2017-05-17 C. Prescher , Yu. D. Fomin , V. B. Prakapenka , J. Stefanski , K. Trachenko , V. V. Brazhkin

Friction is a major source of energy loss in mechanical devices. This energy loss may be minimized by creating interfaces with extremely reduced friction, i.e. superlubricity. Conventional wisdom holds that incommensurate interface…

Materials Science · Physics 2023-12-25 Lukas Hörmann , Johannes J. Cartus , Oliver T. Hofmann

The complex atomic scale structure of high entropy alloys presents new opportunities to expand the deformation theories of mechanical metallurgy. In this regard, solute-defect interactions have emerged as critical piece in elucidating the…

Materials Science · Physics 2025-09-18 Novin Rasooli , Wei Chen , Matthew Daly

The last two decades, in particular, have witnessed a large volume of research revolving around structure-property correlation in Carbon based nanocomposites, synthesized by several methods.In the simplest of terms, the electronic…

Materials Science · Physics 2021-10-07 Manab Mallik , Mainak Saha

We present the results of large scale computer simulations in which we investigate the structural and dynamic properties of silicate melts with the compositions (Na_2O)2(SiO_2) and (Al_2O_3)2(SiO_2). In order to treat such systems on a time…

Statistical Mechanics · Physics 2007-05-23 J. Horbach , A. Winkler , W. Kob , K. Binder

The microstructural characteristics of a single crystalline nickel based superalloy (AM1) tested under high temperature fatigue at 950$^\circ$C are reported. For repeated fatigue (R$_\varepsilon$=0) through a range of cycle numbers N with…

Materials Science · Physics 2021-10-13 Valerie Brien , B. Décamps

Titanium is commonly added to nickel superalloys but has a well-documented detrimental effect on oxidation resistance. The present work constitutes the first atomistic-scale quantitative measurements of grain boundary and bulk compositions…

We study in-plane lateral heterostructures of commensurate transition-metal dichalcogenides, such as MoS$_{2}$-WS$_{2}$ and MoSe$_{2}$-WSe$_{2}$, and find interfacial and edge states that are highly localized to these regions of the…

Mesoscale and Nanoscale Physics · Physics 2019-01-04 Oscar Ávalos-Ovando , Diego Mastrogiuseppe , Sergio E. Ulloa

The interface superconductivity in LaAlO$_{3}$-SrTiO$_{3}$ heterostructures reveals a non-monotonic behavior of the critical temperature as a function of the two-dimensional density of charge carriers. We develop a theoretical description…

Superconductivity · Physics 2014-07-22 S. N. Klimin , J. Tempere , J. T. Devreese , D. van der Marel

Emergence of various properties is mapped in a two-component system from quantum to mesoscale, using Au-Ag alloys. Experiments are designed so that composition is the primary 'interaction' guiding the evolution of properties across…

Mesoscale and Nanoscale Physics · Physics 2012-05-03 Jason N. Armstrong , Eric M. Gande , John W. Vinti , Susan Z. Hua , Harsh Deep Chopra

Title: From favorable atomic configurations to supershell structures: a new interpretation of conductance histograms Authors: A. Hasmy (IVIC), E. Medina (IVIC), P.A. Serena (CSIC,IVIC) Comments: 7 pages, 3 figures, cond-mat.anwar.10825…

Condensed Matter · Physics 2009-10-31 A. Hasmy , E. Medina , P. A. Serena

Nanoscale diffusion at the interfaces in multilayers plays a vital role in controlling their physical properties for a variety of applications. In the present work depth-dependent interdiffusion in a Si/Fe/Si trilayer has been studied with…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Ajay Gupta , Dileep Kumar , Vaishali Phatak

We propose a new conceptual approach to reach unattained dissipative properties based on the friction of slender concentric sliding columns. We begin by searching for the optimal topology in the simplest telescopic system of two concentric…

General Physics · Physics 2023-05-18 G. Puglisi , N. M. Pugno

We demonstrate that the magnetic field dependence of the conductivity measured at the transition temperature allows the dynamical critical exponent, the thickness of thin superconducting films and interfaces, and the limiting lateral length…

Superconductivity · Physics 2015-05-13 T. Schneider

In this article, we report the influence of the interfacial roughness on the thermal boundary conductance between two crystals, using molecular dynamics. We show evidence of a transition between two regimes, depending on the interfacial…

Materials Science · Physics 2015-06-23 Samy Merabia , Konstantinos Termentzidis

Scaling relations between the superconducting transition temperature $T_{\rm c}$, the superfluid stiffness $\rho_{\rm s}$ and the normal state conductivity $\sigma_0(T_{\rm c})$ are identified within the class of molecular superconductors.…

Superconductivity · Physics 2007-05-23 F. L. Pratt , S. J. Blundell

Compositionally graded interfaces in power electronic devices eliminate dislocations, but they can also decrease thermal conduction, leading to overheating. We quantify the thermal resistances of GaN/AlN graded interfaces of varying…

Materials Science · Physics 2019-03-27 Ambroise van Roekeghem , Bjorn Vermeersch , Jesús Carrete , Natalio Mingo

The mechanisms underlying chemifriction, i.e. the contribution of interfacial bonding to friction in defected twisted graphene interfaces are revealed using fully atomistic machine-learning molecular dynamics simulations. This involves…

Mesoscale and Nanoscale Physics · Physics 2025-03-20 Penghua Ying , Xiang Gao , Amir Natan , Michael Urbakh , Oded Hod

The thermodynamic properties of nuclei are studied in a mean field model using a Skryme interaction. Properties of two component systems are investigated over the complete range of proton fraction from a system of pure neutrons to a system…

Nuclear Theory · Physics 2008-11-26 S. J. Lee , A. Z. Mekjian