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The spin- and energy-dependent interface reflectivity of a ferromagnetic (FM) film in contact with a nonmagnetic (NM) film is calculated using a first-principles transport method and incorporated into the superdiffusive spin transport model…

Mesoscale and Nanoscale Physics · Physics 2021-08-31 Wen-Tian Lu , Yawen Zhao , Marco Battiato , Yizheng Wu , Zhe Yuan

A prerequisite to using the net spin polarization generated by a source-drain bias in three-dimensional topological insulators for spintronic applications, is understanding how such a bias alters the transport properties of these materials.…

Mesoscale and Nanoscale Physics · Physics 2025-05-19 Sofie Kölling , Daan H. Wielens , İnanç Adagideli , Alexander Brinkman

The in-plane electron mobility has been calculated in InAs/GaSb type-II superlattices at low temperatures. The interface roughness scattering and ionized impurity scattering are investigated as the dominant scattering mechanisms in limiting…

Materials Science · Physics 2015-02-10 Sara Safa , Asghar Asgari

Non-diffusive thermal transport has gained extensive research interest recently due to its important implications on fundamental understanding of material phonon mean free path distributions and many nanoscale energy applications. In this…

Computational Physics · Physics 2017-01-03 Lei Ma , Riguo Mei , Mengmeng Liu , Xuxin Zhao , Qixing Wu , Hongyuan Sun

Antiferromagnetic Ising spins on the scale-free Barabasi-Albert network are studied via the Monte Carlo method. Using the replica exchange algorithm, we calculate the temperature dependence of various physical quantities of interest…

Disordered Systems and Neural Networks · Physics 2009-11-11 M. Bartolozzi , T. Surungan , D. B. Leinweber , A. G. Williams

We calculate the real time non-equilibrium dynamics of quantum spin systems at finite temperatures. The mathematical framework originates from the $C^*$-approach to quantum statistical mechanics and is applied to samples investigated by…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Kolja Them , T. Stapelfeldt , E. Y. Vedmedenko , R. Wiesendanger

Spin-charge conversion via spin-orbit interaction is one of the core concepts in the current spintronics research. The efficiency of the interconversion between charge and spin current is estimated based on Berry curvature of Bloch…

Strongly Correlated Electrons · Physics 2021-06-11 Y. Kozuka , S. Isogami , K. Masuda , Y. Miura , Saikat Das , J. Fujioka , T. Ohkubo , S. Kasai

Transport properties of magnetic multilayers in current perpendicular to the plane of the layers geometry are defined by diffusive scattering in the bulk of the layers, and diffusive and ballistic scattering across the interfaces. Due to…

Materials Science · Physics 2016-08-31 Asya Shpiro

Interface equations are derived for both binary diffusive and binary fluid systems subjected to non-equilibrium conditions, starting from the coarse-grained (mesoscopic) models. The equations are used to describe thermo-capillary motion of…

Soft Condensed Matter · Physics 2015-06-25 Ravi Bhagavatula , David Jasnow , Takao Ohta

This study analyzes thermoelectric properties of a one-dimensional random conductor which shows localization effects and simultaneously includes resonant scatterers yielding sharp conductance resonances. These sharp features give rise to a…

Mesoscale and Nanoscale Physics · Physics 2015-05-13 D. Müller , W. J. Smit , M. Sigrist

We compute the spin-active scattering matrix and the local spectrum at the interface between a metal and a three-dimensional topological band insulator. We show that there exists a critical incident angle at which complete (100%) spin flip…

Mesoscale and Nanoscale Physics · Physics 2011-01-18 Erhai Zhao , Chun Zhang , Mahmoud Lababidi

We investigate nonequilibrium steady states in a class of one-dimensional diffusive systems that can attain negative absolute temperatures. The cases of a paramagnetic spin system, a Hamiltonian rotator chain and a one-dimensional discrete…

Statistical Mechanics · Physics 2021-05-26 Marco Baldovin , Stefano Iubini

We study the physical properties of a half-metallic ferromagnet$\mid$superconductor (HM$\mid$S) bilayer, allowing for an arbitrary bulk pairing symmetry of the superconductor and spin-dependent processes at the interface. In particular, we…

Superconductivity · Physics 2015-05-18 Jacob Linder , Mario Cuoco , Asle Sudbø

We study the room-temperature electrical control of charge and spin transport in high-quality bilayer graphene, fully encapsulated with hBN and contacted via 1D spin injectors. We show that spin transport in this device architecture is…

We present a general formulation of spin-dependent transport through a clean one-dimensional interacting quantum wire or carbon nanotube, connected to non-collinear ferromagnets via tunnel junctions. We show that the low energy description…

Mesoscale and Nanoscale Physics · Physics 2009-10-31 Leon Balents , Reinhold Egger

Effective electron mobilities are obtained by transport measurements on InAs nanowire field-effect transistors at temperatures ranging from 10-200 K. The mobility increases with temperature below ~ 30 - 50 K, and then decreases with…

Mesoscale and Nanoscale Physics · Physics 2013-05-27 Nupur Gupta , Yipu Song , Gregory W. Holloway , Urbasi Sinha , Chris Haapamaki , Ray R. LaPierre , Jonathan Baugh

Spin-dependent transport at heavy metal/magnetic insulator interfaces is at the origin of many phenomena at the forefront of spintronics research. A proper quantification of the different interfacial spin conductances is crucial for many…

We study spin-scattering asymmetry at the interface of two ferromagnets (FMs) based on a half-metallic Co$_{2}$Fe$_{0.4}$Mn$_{0.6}$Si (CFMS)/CoFe interface. First-principles ballistic transport calculations based on Landauer formula for…

Materials Science · Physics 2021-10-13 Y. Fujita , Y. Miura , T. Sasaki , T. Nakatani , K. Hono , Y. Sakuraba

In a number of current experiments in the field of spin-caloritronics a temperature gradient across a nanostructured interface is applied and spin-dependent transport phenomena are observed. However, a lack in the interpretation and…

Mesoscale and Nanoscale Physics · Physics 2015-07-23 Jia Zhang , Michael Bachman , Michael Czerner , Christian Heiliger

Using a general representation that accounts for the effects on finite-temperature spin and charge transport of the global [SU (2) X SU(2) X U(1)]/(Z2 X Z2) symmetry of the one-dimensional (1D) Hubbard model, we show that important…

Strongly Correlated Electrons · Physics 2025-03-28 J. M. P. Carmelo , J. E. C. Carmelo
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