scholarly journals Wavelength-selective spin-current generator using infrared plasmonic metamaterials

APL Photonics ◽  
2017 ◽  
Vol 2 (10) ◽  
pp. 106103 ◽  
Author(s):  
Satoshi Ishii ◽  
Ken-ichi Uchida ◽  
Thang Duy Dao ◽  
Yoshiki Wada ◽  
Eiji Saitoh ◽  
...  
Keyword(s):  
Spin Current ◽  
Current Generator ◽  
Plasmonic Metamaterials

scholarly journals Proposal for a local heating driven spin current generator

2013 ◽  
Vol 103 (17) ◽  
pp. 172401 ◽  
Author(s):  
Sun-Yong Hwang ◽  
Jong Soo Lim ◽  
Rosa López ◽  
Minchul Lee ◽  
David Sánchez
Keyword(s):  
Local Heating ◽  
Spin Current ◽  
Current Generator

Tuning a zigzag SiC nanoribbon as a thermal spin current generator

2D Materials ◽  
2017 ◽  
Vol 4 (3) ◽  
pp. 035001 ◽  
Author(s):  
Peng Jiang ◽  
Xixi Tao ◽  
Hua Hao ◽  
Lingling Song ◽  
Xiaohong Zheng ◽  
...  
Keyword(s):  
Spin Current ◽  
Current Generator

scholarly journals Spin current generator based on topological insulator coupled to ferromagnetic insulators

AIP Advances ◽  
2012 ◽  
Vol 2 (3) ◽  
pp. 032162 ◽  
Author(s):  
M. J. Ma ◽  
M. B. A. Jalil ◽  
S. G. Tan ◽  
Y. Li ◽  
Z. B. Siu
Keyword(s):  
Topological Insulator ◽  
Spin Current ◽  
Current Generator

Spin current generator in a single molecular magnet with spin bias

2018 ◽  
Vol 465 ◽  
pp. 9-13 ◽  
Author(s):  
Pengbin Niu ◽  
Lixiang Liu ◽  
Xiaoqiang Su ◽  
Lijuan Dong ◽  
Hong-Gang Luo
Keyword(s):  
Spin Current ◽  
Molecular Magnet ◽  
Current Generator

scholarly journals Perovskite as a spin current generator

2021 ◽  
Vol 103 (12) ◽  
Author(s):  
Makoto Naka ◽  
Yukitoshi Motome ◽  
Hitoshi Seo
Keyword(s):  
Spin Current ◽  
Current Generator

The Role of Computer Modeling in Electrocardiography

1990 ◽  
Vol 29 (04) ◽  
pp. 282-288 ◽  
Author(s):  
A. van Oosterom
Keyword(s):  
Electrical Activity ◽  
Computer Modeling ◽  
Body Surface ◽  
Electrical Current ◽  
The Body ◽  
Volume Conductor ◽  
Current Generator ◽  
Cardiac Electrical Activity ◽  
Source Models

AbstractThis paper introduces some levels at which the computer has been incorporated in the research into the basis of electrocardiography. The emphasis lies on the modeling of the heart as an electrical current generator and of the properties of the body as a volume conductor, both playing a major role in the shaping of the electrocardiographic waveforms recorded at the body surface. It is claimed that the Forward-Problem of electrocardiography is no longer a problem. Several source models of cardiac electrical activity are considered, one of which can be directly interpreted in terms of the underlying electrophysiology (the depolarization sequence of the ventricles). The importance of using tailored rather than textbook geometry in inverse procedures is stressed.

Incoherent spin current

2017 ◽  
Author(s):  
K. Ando ◽  
E. Saitoh
Keyword(s):  
Diffusion Equation ◽  
Spin Density ◽  
Spin Diffusion ◽  
Spin Injection ◽  
Spin Current ◽  
Ferromagnetic Semiconductor ◽  
Electrochemical Potential ◽  
Semiconductor Interface ◽  
Interface Resistance ◽  
Inhomogeneous Spin

This chapter introduces the concept of incoherent spin current. A diffusive spin current can be driven by spatial inhomogeneous spin density. Such spin flow is formulated using the spin diffusion equation with spin-dependent electrochemical potential. The chapter also proposes a solution to the problem known as the conductivity mismatch problem of spin injection into a semiconductor. A way to overcome the problem is by using a ferromagnetic semiconductor as a spin source; another is to insert a spin-dependent interface resistance at a metal–semiconductor interface.

scholarly journals Group Velocity Modulation and Light Field Focusing of the Edge States in Chirped Valley Graphene Plasmonic Metamaterials

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1808
Author(s):  
Liqiang Zhuo ◽  
Huiru He ◽  
Ruimin Huang ◽  
Shaojian Su ◽  
Zhili Lin ◽  
...  
Keyword(s):  
Group Velocity ◽  
Light Field ◽  
Slow Light ◽  
Dielectric Materials ◽  
Degree Of Freedom ◽  
Geometrical Parameters ◽  
Edge States ◽  
Velocity Modulation ◽  
Plasmonic Metamaterials ◽  
On Chip

The valley degree of freedom, like the spin degree of freedom in spintronics, is regarded as a new information carrier, promoting the emerging valley photonics. Although there exist topologically protected valley edge states which are immune to optical backscattering caused by defects and sharp edges at the inverse valley Hall phase interfaces composed of ordinary optical dielectric materials, the dispersion and the frequency range of the edge states cannot be tuned once the geometrical parameters of the materials are determined. In this paper, we propose a chirped valley graphene plasmonic metamaterial waveguide composed of the valley graphene plasmonic metamaterials (VGPMs) with regularly varying chemical potentials while keeping the geometrical parameters constant. Due to the excellent tunability of graphene, the proposed waveguide supports group velocity modulation and zero group velocity of the edge states, where the light field of different frequencies focuses at different specific locations. The proposed structures may find significant applications in the fields of slow light, micro–nano-optics, topological plasmonics, and on-chip light manipulation.

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