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相关论文: Effect of a uniaxial strain on optical spin orient…

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We present a theory of the imprinting of the electron spin coherence and population in an n-doped semiconductor which forms a junction with a ferromagnet. The reflection of non-equilibrium semiconductor electrons at the interface provides a…

介观与纳米尺度物理 · 物理学 2009-11-07 C. Ciuti , J. P. McGuire , L. J. Sham

We investigate the impact of uniaxial strain on atomic shifts, dipolar interactions, polarization and electric permittivity in TiO$_2$ (rutile) by using two different implementations of density functional theory. It is shown that…

材料科学 · 物理学 2011-11-11 Anna Grünebohm , Mario Siewert , Peter Entel , Claude Ederer

The generation of an out-of-equilibrium population of spin-polarized carriers is a keystone process for quantum technologies and spintronics alike. It can be achieved through the so-called optical spin orientation by exciting the material…

Solid-state spins hold many promises for quantum information processing. Entangling the polarization of a single photon to the state of a single spin would open new paradigms in quantum optics like delayed-photons entanglement,…

It is shown that a homogeneous non-equlibrium spin-polarization in semiconductor heterostructures results in an electric current. The microscopic origin of the effect is an inherent asymmetry of spin-flip scattering in systems with lifted…

We show that spin polarization of electrons in nonmagnetic semiconductors near specially tailored ferromagnet-semiconductor junctions can achieve 100%. This effect is realized even at moderate spin injection coefficients of the contact when…

其他凝聚态物理 · 物理学 2007-05-23 V. V. Osipov , V. N. Smelyanskiy , A. G. Petukhov

We study the absorption and emission polarization of single semiconductor quantum dots in semiconductor nanowires. We show that the polarization of light absorbed or emitted by a nanowire quantum dot strongly depends on the orientation of…

We propose and theoretically investigate spin superconducting qubits. Spin superconducting qubit consists of a single spin confined in a Josephson junction. We show that owing to spin-orbit interaction, superconducting difference across the…

介观与纳米尺度物理 · 物理学 2012-12-07 C. Padurariu , Yu. V. Nazarov

The polarization of light can exhibit unusual features when singular optical beams are involved. In 3-dimensional polarized random media the polarization orientation around singularities describe 1/2 or 3/2 M\"obius strips. It has been…

The spin angular momentum in an elliptically polarized beam of light plays several noteworthy roles in optical traps. It contributes to the linear momentum density in a non-uniform beam, and thus to the radiation pressure exerted on…

软凝聚态物质 · 物理学 2015-06-03 David B. Ruffner , David G. Grier

At each of the boundaries of the two-dimensional (2D) rectangular conductor parallel to the electric current there arises a stripe with an electric field transverse to the current and a 100% electron spin polarization. The two stripes have…

介观与纳米尺度物理 · 物理学 2011-07-18 Y. B. Lyanda-Geller

This work aims to study theoretically the electron-proton scattering for initially spin-polarized electrons in the presence of a circularly polarized electromagnetic field. Using the first Born approximation and the Dirac-Volkov states for…

高能物理 - 唯象学 · 物理学 2022-07-13 I. Dahiri , M. Baouahi , M. Jakha , S. Mouslih , B. Manaut , S. Taj

A coexistent phase of spin polarization and color superconductivity in high-density QCD is investigated using a self-consistent mean-field method at zero temperature. The axial-vector current stemming from the Fock exchange term of the…

高能物理 - 唯象学 · 物理学 2010-11-19 E. Nakano , T. Maruyama , T. Tatsumi

Circularly polarized laser pulses that excite electron-hole pairs across the band gap of (III,Mn)V ferromagnetic semiconductors can be used to manipulate and to study collective magnetization dynamics. The initial spin orientation of a…

介观与纳米尺度物理 · 物理学 2007-05-23 J. Fernández-Rossier , Alvaro S. Núñez , M. Abolfath , A. H. MacDonald

Uniaxially patterned dielectric layers have an optical anisotropy that can be externally controlled. We study the effects of patterning the cladding or the core layer of a 3-layer optical waveguide on the polarization properties of…

材料科学 · 物理学 2009-11-11 Arsen V. Subashiev , Serge Luryi

This work investigates the effect of the uniaxial strain on the tunneling conductance in a strained graphene superconductor where strain is applied in the armchair direction. Based on the Tight-Binding model, applying strain in the armchair…

超导电性 · 物理学 2010-09-24 Bumned Soodchomshom

The optical orientation of the exciton spin in an ensemble of self-organized cubic GaN/AlN quantum dots is studied by time-resolved photoluminescence. Under a polarized quasi-resonant excitation, the luminescence linear polarization…

其他凝聚态物理 · 物理学 2009-11-13 D. Lagarde , A. Balocchi , H. Carrere , P. Renucci , T. Amand , X. Marie , S. Founta , H. Mariette

Theoretical description of electron spin orientation and detection by short optical pulses is proposed for the ensembles of the singly charged semiconductor nanocrystals. The complex structure of the valence band in spherical nanocrystals…

介观与纳米尺度物理 · 物理学 2017-03-31 M. M. Glazov , D. S. Smirnov

We show that the efficiency of manipulating electron spin in semiconductor quantum wells can be enhanced by tuning the strain strength. The effect combining intrinsic and strain-induced spin splitting varies for different systems, which…

介观与纳米尺度物理 · 物理学 2008-07-16 Yuan Li , You-Quan Li

Spin photocurrents generated by homogeneous optical excitation with circularly polarized radiation in quantum wells (QWs) are reviewed. The absorption of circularly polarized light results in optical spin orientation due to the transfer of…

凝聚态物理 · 物理学 2007-05-23 S. D. Ganichev , W. Prettl