Surface-enhanced spin current to charge current conversion efficiency in CH3NH3PbBr3-based devices

2019 ◽  
Vol 151 (17) ◽  
pp. 174709 ◽  
Author(s):  
Dali Sun ◽  
Chuang Zhang ◽  
Marzieh Kavand ◽  
Jingying Wang ◽  
Hans Malissa ◽  
...  
Keyword(s):  
Conversion Efficiency ◽  
Spin Current ◽  
Charge Current ◽  
Surface Enhanced

scholarly journals Anomalous spin Hall and inverse spin Hall effects in magnetic systems

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
X. R. Wang
Keyword(s):  
Hall Effect ◽  
Order Parameter ◽  
Spin Current ◽  
Spin Hall Effect ◽  
Magnetic Systems ◽  
Charge Current ◽  
Spin Currents ◽  
Tensor Quantity ◽  
Hall Effects ◽  
Spin Hall Effects

AbstractSpin current is a very important tensor quantity in spintronics. However, the well-known spin-Hall effect (SHE) can only generate a few of its components whose propagating and polarization directions are perpendicular with each other and to an applied charge current. It is highly desirable in applications to generate spin currents whose polarization can be in any possible direction. Here anomalous SHE and inverse spin-Hall effect (ISHE) in magnetic systems are predicted. Spin currents, whose polarisation and propagation are collinear or orthogonal with each other and along or perpendicular to the charge current, can be generated, depending on whether the applied charge current is along or perpendicular to the order parameter. In anomalous ISHEs, charge currents proportional to the order parameter can be along or perpendicular to the propagating or polarization directions of the spin current.

scholarly journals Spin-current-induced charge current

2005 ◽  
Vol 71 (12) ◽  
Author(s):  
Soon-wook Jung ◽  
Hyun-Woo Lee
Keyword(s):  
Spin Current ◽  
Charge Current ◽  
Induced Charge

Spin Pumping in a Ferromagnetic/Nonmagnetic/Spin-Sink Trilayer Film: Spin Current Termination

2012 ◽  
Vol 508 ◽  
pp. 266-270 ◽  
Author(s):  
K. Harii ◽  
Z. Qiu ◽  
T. Iwashita ◽  
Y. Kajiwara ◽  
K. Uchida ◽  
...  
Keyword(s):  
Diffusion Equation ◽  
Hall Effect ◽  
Spin Diffusion ◽  
Diffusion Length ◽  
Spin Current ◽  
Interlayer Thickness ◽  
Spin Pumping ◽  
Charge Current ◽  
Inverse Spin Hall Effect ◽  
Spin Diffusion Length

A Spin Current Generated by Spin Pumping in a Ferromagnetic/Nonmagnetic/Spin-Sink Trilayer Film Is Calculated Based on the Spin Pumping Theory and the Standard Spin Diffusion Equation. By Attaching the Spin-Sink Layer, the Injected Spin Current Is Drastically Enhanced when the Interlayer Thickness Is Shorter than the Spin Diffusion Length of the Interlayer. We Also Provided the Formula of the Charge Current which Is Induced from the Pumped Spin Current via the Inverse Spin-Hall Effect.

Pure spin current generation with photogalvanic effect in graphene interconnect junctions

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Yan-Hong Zhou ◽  
Shaohui Yu ◽  
Yuejun Li ◽  
Xin Luo ◽  
Xiaohong Zheng ◽  
...  
Keyword(s):  
Graphene Nanoribbons ◽  
Spin Current ◽  
Edge State ◽  
Polarization Angle ◽  
Pure Spin ◽  
Inversion Symmetry ◽  
Current Generation ◽  
Photogalvanic Effect ◽  
Charge Current ◽  
Zero Charge

Abstract We investigate the photovoltaic behaviors of magnetic graphene interconnect junctions, which are constructed by zigzag graphene nanoribbons (ZGNRs), with the aim to produce pure spin current by photogalvanic effect (PGE). Two kinds of interconnect junctions are designed by connecting two 6-ZGNR with a carbon hexagon (C6) and a carbon tetragon (C4), respectively. It is found that zero charge current is produced under irradiation of light in both structures due to the presence of spatial inversion symmetry. Nevertheless, behind the zero charge current, net pure spin current is produced in the structure with a C6, but not in the structure with a C4. This difference originates from their different edge state distribution and different spatial inversion symmetry of the spin density. However, interestingly, local edge pure spin current can be obtained in both structures. More importantly, the pure spin current generation is independent of the photon energy, polarization type or polarization angle, suggesting a robust way of generating pure spin current with PGE and new possibility of graphene’s applications in spintronics.

Conversion of equilibrium spin current into charge current through a quantum-dot spin valve subject to circularly polarized field

2015 ◽  
Vol 379 (47-48) ◽  
pp. 3114-3118 ◽  
Author(s):  
Feng Liang ◽  
Ben-Ling Gao ◽  
Guang Hu ◽  
Yu Gu ◽  
Ning Xu
Keyword(s):  
Quantum Dot ◽  
Spin Valve ◽  
Spin Current ◽  
Circularly Polarized ◽  
Charge Current

scholarly journals Major Effective-damping Reduction Achieved by Metallic Coating on YIG Thin Films

2021 ◽  
Author(s):  
E. Hermanny ◽  
D. E. González-Chávez ◽  
R. L. Sommer
Keyword(s):  
Thin Films ◽  
Power Efficiency ◽  
Metal Layer ◽  
Phase Locking ◽  
Spin Current ◽  
Magnetic Damping ◽  
Ferromagnetic Thin Films ◽  
Charge Current ◽  
Nonzero Spin ◽  
Iron Garnet

Abstract Since its discovery, yttrium iron garnet (YIG) has been object of great interest because of its peculiarly low magnetic damping. Magnetic materials with reduced damping promote microwave power efficiency, longer magnon lifetime and longer spin-wave propagation. Owing to research on charge-to-spin current conversion, the control of magnetic damping in ferromagnetic thin films has recently been achieved by inducing charge current on adjacent metal layer with strong spin-orbit coupling (SOC). We report damping reduction in metallized YIG thin films (YIG/Ag/Ni) without the need of applied charge current and suggest that the origin of this unexpected effect is a strengthening of the FMR uniform mode in the YIG layer, due to frequency- and phase-locking that result from self-synchronization mediated by nonzero spin densities transiting the metallic layers.

scholarly journals Conversion of spin current into charge current in a topological insulator: Role of the interface

2018 ◽  
Vol 97 (17) ◽  
Author(s):  
Rik Dey ◽  
Nitin Prasad ◽  
Leonard F. Register ◽  
Sanjay K. Banerjee
Keyword(s):  
Topological Insulator ◽  
Spin Current ◽  
Charge Current

scholarly journals Sensitivity of Dirac fermion and Weyl fermion by the Energy Conservation Law of Lenz

2020 ◽  
Author(s):  
Teresa Oh ◽  
Xiangjiang Li
Keyword(s):  
Energy Conservation ◽  
Conservation Law ◽  
Spin Current ◽  
The State ◽  
Majorana Fermion ◽  
Dirac Fermion ◽  
Charge Current ◽  
Gas Environment ◽  
Weyl Fermion ◽  
Energy Conservation Law

Abstract The law of Lenz as an energy conservation law between the electric field and the magnetic field allows the charge current and spin current generated by matters and antimatters to be symmetrical with each other. Thus, there is a Lenz plane of symmetry to the electromagnet energy. Phase isolators are charged current by electrons and spin current by spin. The charge current is Weyl fermion, and the spin current is Dirac fermion. The charge current and spin current are characterized by balancing each other, and the fermion, which has both particles and carriers, is Majorana fermion. The reaction was investigated when phase insulators in the state of Dirac fermion and Weyl fermion were exposed to CO2 gas. Although the sensitivity of the phase isolator has decreased as Weyl fermion makes spin current in the gas environment, the sensitivity of the phase isolator has increased as Dirac fermion makes charge current in the gas environment. The spin current of the Dirac fermion has a super current characteristic with a resistance of zero and quantum tunneling phenomenon has occurred. According to Lenz's energy conservation law, the electron sensor has an advantage of the phase insulator in the state of Dirac fermion, where the charge current increases.

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