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[成果]北京师范大学物理学系张金星和沈卡小组与合作者以“Strain-Driven Dzyaloshinskii-Moriya Interaction for Room-Temperature Magnetic Skyrmions”为题发表学术成果（图）
磁性体系；多铁性材料；磁电耦合
2021/11/1
Dzyaloshinskii-Moriya（DM）相互作用，是一种反对称自旋交换作用，于上个世纪六十年代由I. Dzyaloshinskii利用唯象理论提出，并由T. Moriya在超交换相互作用中考虑自旋轨道耦合而发展的微观理论，被用来解释磁性体系中诸多新奇物理现象（自旋玻璃中的各向异性场、多铁性材料中的磁电耦合、自旋波的非对称色散关系、非共线磁结构等）。近十几年来，由于DM相互作用而实现的螺旋...
Effect of High Strain Rate on TiNi Shape Memory Alloys
shape memory effect TiNi alloys high rate strain functional properties incubation time
2012/9/24
In recent years, an increasing interest in shape memory effects and TiNi alloys can be observed from researchers, engineers and designers due to improving technologies of manufacturing and processing ...
Strain-tuning of quantum dot optical transitions via laser-induced surface defects
Strain-tuning quantum dot optical transitions laser-induced surface defects
2011/8/17
Abstract: We discuss the fine-tuning of the optical properties of self-assembled quantum dots by the strain perturbation introduced by laser-induced surface defects. We show experimentally that the qu...
Fine tuning epitaxial strain in ferroelectrics: PbxSr(1-x)TiO3 on DyScO3
ferroelectrics strain thin films phase diagram phase boundaries
2010/11/24
Epitaxial strain can be efficiently used to modify the properties of ferroelectric thin films. From the experi-mental viewpoint, the challenge is to fine-tune the magnitude of the strain. We illustrat...
Effects of variable anisotropic-strain on the emission of neutral excitons confined in epitaxial quantum dots
Effects of variable anisotropic-strain neutral excitons epitaxial quantum dots
2010/11/22
We study the e ect of elastic anisotropic biaxial strain on the light emitted by neutral excitons confined in di erent kinds of semiconductor quantum dots (QDs). We find that the light polarization ro...
Strain-mediated magnetoelectric coupling in magnetostrictive/piezoelectric heterostructures and resulting high frequency effects
Strain-mediated magnetoelectric magnetostrictive/piezoelectric heterostructures high frequency effects
2010/11/19
Magnetoelectric coupling terms are derived in piezoelectric/magnetostrictive (multiferroic) thin film heterostructures using Landau-Ginzburg free energy expansions in terms of strain and by con-sideri...
Graphene as a quantum surface with curvature-strain preserving dynamics
Graphene preserving dynamics
2010/11/19
We discuss how the curvature and the strain density of the atomic lattice generate the quantization of graphene sheets as well as the dynamics of geometric quasiparticles propagating along the constan...
Intricacies of Strain and Magnetic Field Induced Charge Order Melting in Pr0.5Ca0.5MnO3 Thin Films
Intricacies of Strain Magnetic Field Induced Charge Order
2010/11/25
Intricacies of Strain and Magnetic Field Induced Charge Order Melting in Pr0.5Ca0.5MnO3 Thin Films.
Strain determination in the Si channel above a single SiGe island inside a field effect transistor using nanobeam x-ray diffraction
Strain determination Si channel field effect transistor
2010/11/24
SiGe islands are used to induce tensile strain in the Si channel of Field E ect Transistors to achieve larger transconductance and higher current driveabilities. We report on x-ray di raction experime...
First Principles Study of Si/Ge Core-Shell nanowires under external uniaxial strain
First Principles Study Si/Ge Core-Shell nanowires external uniaxial strain
2010/11/11
Density-functional theory based first principles calculations are performed to study the effects of external uniaxial strain on the electronic states of Si/Ge core-shell nanowires along the [110] dire...
An Investigation of the Effects of Hydrogen on Local Strain Fields and Structural Disorder-to-Order Transition in Hydrogenated Amorphous Silicon
Amorphous silicon atomic-level stress defects topological disorder local order strain-fields
2010/4/9
This study utilizes the fluctuations in the mean silicon-silicon near neighbour distances and local atomic-level stresses to study the chemically-induced disorder-to-order transition in hydrogenated a...
Theoretical Calculations of Strain-Induced Splittings and/or Shifts of t232E and
t234A2
Levels for MgO:Cr3+
strain and stress splitting and shift of levels
ligand field admixture of wavefunctions single-electron
reduced matrix elements
2007/8/15
2001Vol.36No.2pp.219-226DOI:
Theoretical Calculations of Strain-Induced Splittings and/or Shifts of t232E and
t234A2
Levels for MgO:Cr3+
MA Dong-Ping,1,2 MA Ning3 and CHEN Ju-Ro...
期刊信息
篇名
The influence of crystallographic orientaion and strain tate on the high tempeerature low cyclic Fatigue property of a hicheefbase single crystal superallog
语种
英文
撰写或编译
作者
Z.F.Yue ,Z.Z.Lu
第一作者...
Strain-Induced Shifts of the Zone-Center Phonons of III-Nitrides
Strain-Induced Shifts the Zone-Center Phonons III-Nitrides
2010/10/22
In this work, by using the density-functional theory within the local density approximation, plane wave expansions and the pseudopotential method, we present our preliminary results for the strain-ind...