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We investigate an imbalanced mixture composed of two-color fermions and scalar bosons in the hard-core limit, considering repulsive and attractive interspecies and intraspecies interactions. The interplay between commensurability, repulsive…

Quantum Gases · Physics 2021-02-10 R. Guerrero-Suarez , J. J. Mendoza-Arenas , R. Franco , J. Silva-Valencia

High-throughput (HTP) $ab$ $initio$ calculations are performed on 27,865 Heusler compositions, covering a broad range of regular, inverse, and half-Heusler compounds in both cubic and tetragonal phases. In addition to conventional stability…

Materials Science · Physics 2025-02-26 Enda Xiao , Terumasa Tadano

Intermetallic Heusler alloys are amongst the most attractive half-metallic systems due to the high Curie temperatures and the structural similarity to the binary semiconductors. In this review we present an overview of the basic electronic…

Materials Science · Physics 2008-01-16 K. Ozdogan , E. Sasioglu , I. Galanakis

The design of large-scale electronic circuits that are entirely spintronics-driven requires a current source that is highly spin-polarised at and beyond room temperature, cheap to build, efficient at the nanoscale and straightforward to…

The contribution of the polarization associated with the noncollinear parts of spins in the dielectric permeability tensor of multiferroic materials is considered. As the equilibrium state, we consider the systems of parallel spins, so we…

Materials Science · Physics 2025-05-13 Pavel A. Andreev

Molecules present a versatile platform for quantum information science, and are candidates for sensing and computation applications. Robust spin-optical interfaces are key to harnessing the quantum resources of materials. To date,…

In recent years, antiferromagnetic spintronics has received much attention since ideal antiferromagnets do not produce stray fields and are much more stable to external magnetic fields compared to materials with net magnetization. Akin to…

We present a systematic construction of the probability-current operator,based on a momentum power expansion of effective Hamiltonians. The result is valid in the presence of a Rashba term and when a D'yakonov--Perel contribution is…

Mesoscale and Nanoscale Physics · Physics 2011-09-26 Federico Bottegoni , Henri-Jean Drouhin , Guy Fishman , Jean-Eric Wegrowe

Owing to the unique features of low Gilbert damping, long spin-diffusion lengths and zero Ohmic losses, magnetic insulators are promising candidate materials for next-generation spintronic applications. However, due to the localized…

XX'YZ equiatomic quaternary Heusler alloys (EQHA's) containing Cr, Al, and select Group IVB elements ($\textit{M}$ = Ti, Zr, Hf) and Group VB elements ($\textit{N}$ = V, Nb, Ta) were studied using state-of-the-art density functional theory…

Materials Science · Physics 2020-11-04 Gavin Winter , Matthew Matzelle , Christopher Lane , Arun Bansil

In order to enhance spin injection efficiency from ferromagnetic (FM) metal into a two-dimensional electron gas (2DEG), we introduce another FM metal and two tunnel barriers (I) between them to investigate the current polarization in such…

Materials Science · Physics 2007-05-23 Jun Wang , D. Y. Xing , H. B. Sun

We develop a Monte Carlo model to study injection of spin-polarized electrons through a Schottky barrier from a ferromagnetic metal contact into a non-magnetic low-dimensional semiconductor structure. Both mechanisms of thermionic emission…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 Min Shen , Semion Saikin , Ming-C. Cheng

In this paper we review the recent field of organic spintronics, where organic materials are applied as a medium to transport and control spin-polarized signals. The contacts for injecting and detecting spins are formed by metals, oxides,…

Mesoscale and Nanoscale Physics · Physics 2007-06-13 W. J. M. Naber , S. Faez , W. G. van der Wiel

A p-n junction, an interface between two regions of a material populated with carriers of opposite charge, is a basic building block of solid state electronic devices. From the fundamental physics perspective, it often serves as a tool to…

Mesoscale and Nanoscale Physics · Physics 2015-09-02 Roni Ilan , Fernando de Juan , Joel E. Moore

We study spin dependent transport through a magnetic bilayer graphene nanojunction configured as two dimensional normal/ferromagnetic/normal structure where the gate-voltage is applied on the layers of ferromagnetic graphene. Based on the…

Mesoscale and Nanoscale Physics · Physics 2012-11-13 Hosein Cheraghchi , Fatemeh Adinehvand

We design spin filters for particles with potentially arbitrary spin S (= 1/2, 1, 3/2,....) using a one-dimensional periodic chain of magnetic atoms as a quantum device. Describing the system within a tight-binding formalism we present an…

Mesoscale and Nanoscale Physics · Physics 2016-08-02 Biplab Pal , Rudolf A. Römer , Arunava Chakrabarti

We study surface plasmons localized on interfaces between topologically trivial and topologically non-trivial time reversal invariant materials in three dimensions. For the interface between a metal and a topological insulator the magnetic…

Mesoscale and Nanoscale Physics · Physics 2013-05-29 Andreas Karch

A drift-diffusion model for spin-charge transport in spin-polarized {\it p-n} junctions is developed and solved numerically for a realistic set of material parameters based on GaAs. It is demonstrated that spin polarization can be injected…

Materials Science · Physics 2009-11-07 Igor Zutic , Jaroslav Fabian , S. Das Sarma

We extend the analogy between charge-based bipolar semiconductor electronics and spin-based unipolar electronics by considering unipolar spin transistors with different equilibrium spin splittings in the emitter, base, and collector. The…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 M. E. Flatté , G. Vignale

While tremendous success has been achieved to date in creating both single phase and composite magnetoelectric materials, the quintessential electric-field control of magnetism remains elusive. In this work, we demonstrate a linear…

Materials Science · Physics 2011-11-10 J. M. Rondinelli , M. Stengel , N. A. Spaldin
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