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We study the electronic structure and magnetic properties of h-BN triangular clusters embedded in graphene supercells. We find that, depending on the sizes of the clusters and the graphene separation region between them, spin polarization…

介观与纳米尺度物理 · 物理学 2012-12-05 Marcos G. Menezes , Rodrigo B. Capaz

A method for measuring the degree of spin polarization of magnetic materials based on spin-dependent resonant tunneling is proposed. The device we consider is a ballistic double-barrier resonant structure consisting of a ferromagnetic layer…

介观与纳米尺度物理 · 物理学 2008-07-12 Francesco Giazotto , Fabio Taddei , Rosario Fazio , Fabio Beltram

Many strongly correlated electronic materials, including high-temperature superconductors, colossal magnetoresistance and metal-insulator-transition (MIT) materials, are inhomogeneous on a microscopic scale as a result of domain structure…

介观与纳米尺度物理 · 物理学 2012-09-05 Jiang Wei , Zenghui Wang , Wei Chen , David H. Cobden

The interplay of spin-orbit-coupling and strong electronic correlations is studied for the single-layer and the bilayer compound of the strontium ruthenate Ruddlesden-Popper series by a combination of first-principles band-structure theory…

强关联电子 · 物理学 2012-08-08 Malte Behrmann , Christoph Piefke , Frank Lechermann

Electronic structure calculation were used to predict a new material for spintronic applications. Co2Mn0.5Fe0.5Si is one example which is stable against on-site correlation and disorder effects due to the position of the Fermi energy in the…

材料科学 · 物理学 2013-08-08 Benjamin Balke , Hem C. Kandpal , Gerhard H. Fecher , Claudia Felser

A wide variety of experimental results and theoretical investigations in recent years have convincingly demonstrated that several transition metal oxides and other materials, have dominant states that are not spatially homogeneous. This…

强关联电子 · 物理学 2009-11-11 Elbio Dagotto

Piezoelectric devices, such as piezoelectric traveling wave rotary ultrasonic motors, have composite piezoelectric structures. A composite piezoelectric structure consists of a combination of two or more bonded materials, where at least one…

数值分析 · 数学 2011-09-08 Valentin Bolborici , Francis P. Dawson , Mary C. Pugh

Novel hyperuniform materials are emerging as an active field of applied and basic research since they can be designed to have exceptional physical properties. This ubiquitous state of matter presents a hidden order that is characterized by…

Li-based half-Heusler alloys have attracted much attention due to their potential applications in optoelectronics and because they carry the possibility of exhibiting large magnetic moments for spintronic applications. Due to their…

材料科学 · 物理学 2015-03-05 L. Damewood , B. Busemeyer , M. Shaughnessy , C. Y. Fong , L. H. Yang , C. Felser

Non-equilibrium spin-polarized transport properties of antiferromagnetic stanene nanoribbons are theoretically studied under the combining effect of a normal electric field and linearly polarized irradiation based on the tight-binding model…

介观与纳米尺度物理 · 物理学 2022-10-13 Fatemeh Rahimi , Arash Phirouznia

The group theory framework developed by Fukutome for a systematic analysis of the various broken symmetry types of Hartree-Fock solutions exhibiting spin structures is here extended to the general many body context using spinor-Green…

统计力学 · 物理学 2009-10-31 A. K. Rajagopal , Mogus Mochena

Spin-orbit coupling in organic crystals is responsible for many spin-relaxation phenomena, going from spin diffusion to intersystem crossing. With the goal of constructing effective spin-orbit Hamiltonians to be used in multiscale…

材料科学 · 物理学 2017-03-01 Subhayan Roychoudhury , Stefano Sanvito

We investigate theoretically an interacting metallic wire with a strong magnetic field directed along its length and show that it is a new and highly tunable one-dimensional system. By considering a suitable change in spatial geometry, we…

强关联电子 · 物理学 2017-08-02 Daniel Bulmash , Chao-Ming Jian , Xiao-Liang Qi

Finite gold nanowires containing less than 1000 atoms are studied using the molecular dynamics simulation method and embedded atom potential. Nanowires with the face-centered cubic structure and the (111) oriented cross-section are prepared…

材料科学 · 物理学 2009-10-31 G. Bilalbegovic

Because of its fascinating electronic properties, graphene is expected to produce breakthroughs in many areas of nanoelectronics. For spintronics, its key advantage is the expected long spin lifetime, combined with its large electron…

Spin-polarized transport through a band-gap-matched ZnSe/Zn_{1-x}Mn_{x} Se/ZnSe/Zn_{1-x}Mn_{x}Se/ZnSe multilayer structure is investigated. The resonant transport is shown to occur at different energies for different spins owing to the…

介观与纳米尺度物理 · 物理学 2009-11-13 Zhen-Gang Zhu , Gang Su

Ferroelectric topological objects (e.g. vortices, skyrmions) provide a fertile ground for exploring emerging physical properties that could potentially be utilized in future configurable nanoelectronic devices. Here, we demonstrate…

We show that a quasiperiodic magnetic chain comprising magnetic atomic sites sequenced in Fibonacci pattern can act as a prospective candidate for spin filters for particles with arbitrary spin states. This can be achieved by tuning a…

介观与纳米尺度物理 · 物理学 2019-04-29 Biplab Pal

A systematic study of the structural, electronic, and optical properties of cage-like boron clusters, with the number of constituent atoms ranging from 20 to 122, has been carried out within the framework of density-functional theory (DFT),…

材料科学 · 物理学 2025-12-24 Kashinath T. Chavan , Ihsan Boustani , Alok Shukla

In this work we apply the density matrices approach to orbital ordering (OO) in order to study the OO of the spinel vanadates AV$_{2}$O$_{4}$ (A $\equiv$ Zn, Cd and Mg), which is normally believed to be responsible for the structural…

强关联电子 · 物理学 2017-04-24 Sohan Lal , Sudhir K. Pandey
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