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Photogalvanic effect (PGE) occurs in materials with non-centrosymmetric structures when irradiated by linearly or circularly polarized light. Here, using non-equilibrium Green's function combined with density functional theory (NEGF-DFT),…

材料科学 · 物理学 2023-05-26 Li-Wen Zhang , Ya-Qing Yang , Jun Chen , Lei Zhang

We report on the detection of the intrinsic spin Hall effect in a modulation doped Al-GaAs/GaAs/AlGaAs heterostructure bounded by a self-aligned pn-junction, fabricated by the cleaved edge overgrowth method. Light emission due to the…

应用物理 · 物理学 2017-05-08 Adrian Maier , Christian Reichl , Stefan Riedi , Stefan Faelt , Werner Wegscheider

The photonic spin Hall effect (PSHE) in surface plasmon resonance (SPR) structures has great potential for various polarization-sensitive applications and devices. Here, using optical weak measurement, we observe spin-dependent and…

The photogalvanic effect (PGE) occurring in noncentrosymmetric materials enables the generation of a dc photocurrent at zero bias with a high polarization sensitivity, which makes it very attractive in photodetection. However, the magnitude…

应用物理 · 物理学 2021-06-28 Liyu Qian , Juan Zhao , Yiqun Xie

Successful incorporation of the spin degree of freedom in semiconductor technology requires the development of a new paradigm allowing for a scalable, non-destructive electrical detection of the spin-polarization of injected charge carriers…

介观与纳米尺度物理 · 物理学 2015-05-13 J. Wunderlich , A. C. Irvine , Jairo Sinova , B. G. Park , X. L. Xu , B. Kaestner , V. Novak , T. Jungwirth

The photonic spin Hall effect (PSHE), a hallmark of spin-orbit interaction of light, has long been considered a promising route toward spin-controlled functionalities in nanophotonics. Yet, its practical realization has been severely…

The Photon Drag Effect (PDE) is a nonlinear process akin to optical rectification in which the momentum of light is transferred to charged carriers and converted to a DC voltage. Here, we experimentally demonstrate the spin-polarized…

Here we show the room temperature integrated detection of the helicity of photons with 1300 nm wavelength, via spin- photodiodes based on fully epitaxial Fe/MgO/Ge(001) heterostructures. These devices convert the photon helicity in a…

材料科学 · 物理学 2011-10-26 C. Rinaldi , M. Cantoni , D. Petti , M. Leone , N. M. Caffrey , S. Sanvito , R. Bertacco

Utilizing spin or valley degree of freedom is one of the promising approaches to realize more energy-efficient information processing. In the 2D transition metal dichalcogenide, the spin/valley current can be generated by utilizing the…

材料科学 · 物理学 2021-02-09 Abdullah Rasmita , Chongyun Jiang , Hui Ma , Zhurun Ji , Ritesh Agarwal , Wei-bo Gao

Detection of the degree of circular polarization of the electroluminescence of a light-emitting diode fitted with a spin injecting contact (a spin-LED) allows for a direct determination of the spin polarization of the injected carriers.…

材料科学 · 物理学 2009-11-10 R. Fiederling , P. Grabs , W. Ossau , G. Schmidt , L. W. Molenkamp

We performed photoinduced inverse spin Hall effect (ISHE) measurements on a Pt/Ge(001) junction at room temperature. The spin-oriented electrons, photogenerated at the direct gap of Ge using circularly polarized light, provide a net spin…

介观与纳米尺度物理 · 物理学 2015-06-15 Federico Bottegoni , Alberto Ferrari , Stefano Cecchi , Marco Finazzi , Franco Ciccacci , Giovanni Isella

The spin-dependent recombination (SDR) has been observed in GaAs_{1-x}N_{x} (x = 2.1, 2.7, 3.4%) at room temperature. It reveals itself in a decrease of the edge photoluminescence (PL) intensity by more than a factor of 3 when either the…

Converse effect of spin photocurrent and current induced spin polarization are experimentally demonstrated in the same two-dimensional electron gas system with Rashba spin splitting. Their consistency with the strength of the Rashba…

介观与纳米尺度物理 · 物理学 2009-11-11 C. L. Yang , H. T. He , Lu Ding , L. J. Cui , Y. P. Zeng , J. N. Wang , W. K. Ge

The development of van der Waals (vdW) crystals and their heterostructures has created a fascinating platform for exploring optoelectronic properties in the two-dimensional (2D) limit. With the recent discovery of 2D magnets, the control of…

We show that the accumulation of spin-polarized electrons at a forward-biased Schottky tunnel barrier between Fe and n-GaAs can be detected electrically. The spin accumulation leads to an additional voltage drop across the barrier that is…

材料科学 · 物理学 2009-11-11 X. Lou , C. Adelmann , M. Furis , S. A. Crooker , C. J. Palmstrom , P. A. Crowell

Studies of spin manipulation in semiconductors has benefited from the possibility to grow these materials in high quality on top of optically active III-V systems. The induced electroluminescence in these layered semiconductor…

介观与纳米尺度物理 · 物理学 2009-11-11 B. Kaestner , J. Wunderlich , Jairo Sinova , T. Jungwirth

Efficient detection of spin-charge conversion is crucial for advancing our understanding of emergent phenomena in spin-orbit-coupled nanostructures. Here, we provide proof of principle of an electrical detection scheme of spin-charge…

介观与纳米尺度物理 · 物理学 2020-06-16 Stuart A. Cavill , Chunli Huang , Manuel Offidani , Yu-Hsuan Lin , Miguel A. Cazalilla , Aires Ferreira

The photonic spin Hall effect (SHE) is generally believed to be a result of an effective spin-orbit coupling, which describes the mutual influence of the spin (polarization) and the trajectory of the light beam. The photonic SHE holds great…

光学 · 物理学 2015-06-22 Xinxing Zhou , Shizhen Chen , Yachao Liu , Hailu Luo , Shuangchun Wen

In an inhomogeneously doped magnetic semiconductor, an interplay between an equilibrium magnetization and injected nonequilibrium spin leads to the spin-voltaic effect--a spin analogue of the photo-voltaic effect. By reversing either the…

凝聚态物理 · 物理学 2007-05-23 Igor Zutic , Jaroslav Fabian

We show that with the help of spin-orbit coupling, nonlinear light-matter interactions can efficiently couple with spin and valley degrees of freedom. This revealed spin photogalvanic effect can generate the long-time pursued intrinsic pure…

材料科学 · 物理学 2020-06-19 Ruixiang Fei , Xiaobo Lu , Li Yang
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