Geometric symmetry modulated spin polarization of electron transport in graphene-like zigzag FeB2 nanoribbons

Spin-polarized electron transport through a zigzag zinc oxide nanoribbon (ZnONR) has been studied using first-principles transport simulations. Ribbons without edges passivated show 100% spin polarization at small bias voltage independently of width. The ribbons with edge zinc atoms passivated maintain absolute spin-filtering effect in much larger bias region. The results demonstrate that zigzag ZnONRs act as perfect spin-filters in the absence of magnetic electrodes and external fields.

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Periodic Changes Effects of Distance between Magnetic Barriers on Electron Transport in Nanostructure

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.284-286.833 ◽

2011 ◽

Vol 284-286 ◽

pp. 833-838

Author(s):

Zahra Bamshad

Keyword(s):

Electron Transport ◽

Spin Polarization ◽

Function Approximation ◽

Delta Function ◽

Magnetic Configuration ◽

Parallel Configuration ◽

Magnetic Barriers ◽

Spintronics Device ◽

Periodic Changes

I theoretically investigate the spin Polarization and transmission of the electrons in a nanostructure consisting barriers with periodic, parallel and also anti parallel magnetization .also I investigate polarization when distance between barriers is constant, or is increased, or is decreased periodically. These observable quantities are found to be strongly affected by both the magnetic configuration and the number of the periodic magnetic barriers. When the number of periods increases, in parallel magnetization for periodic increasing distance the polarization is enhanced so in parallel configuration it is better that distance between barriers to be increasing periodically. I investigate Polarization in these configuration in both delta function approximation and modulated magnetic barriers in x direction. This Polarization can be used in spintronics device.

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SPIN-DEPENDENT ELECTRON TRANSPORT THROUGH A THREE-TERMINAL MESOSCOPIC SPIN-ORBIT COUPLED SYSTEMS

International Journal of Modern Physics B ◽

10.1142/s0217979213610031 ◽

2013 ◽

Vol 27 (07) ◽

pp. 1361003

Author(s):

ZHONGHUI XU ◽

XIANBO XIAO ◽

YUGUANG CHEN

Keyword(s):

Electron Transport ◽

Spin Polarization ◽

Function Method ◽

Structural Parameters ◽

Coupled Systems ◽

Spin Orbit Coupling ◽

Spin Orbit ◽

Wide Region ◽

Rashba Spin ◽

Electron Transport Properties

We studied theoretically the spin-dependent electron transport properties of a three-terminal nanostructure proposed by Xiao and Chen [J. Appl. Phys.1, 108 (2010)]. The spin-resolved recursive Green's function method is used to calculate the three-terminal spin-polarization. We focus on the influence both of the structural parameters and Rashba spin–orbit coupling (SOC) strength in the investigated system. It is shown that the spin-polarization is still a reasonable value for being observable in experiment with small Rashba SOC strength and longer length of the wide region in the investigated system. The underlying physics is revealed to originate from the effect of SOC-induced effective magnetic field at the structure-induced Fano resonance. This length of the middle wide region in three-terminal nanostructure can be more easily fabricated experimentally.

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Effects of spin polarization on electron transport in modulation-doped Cd1−xMnxTe/Cd1−yMgyTe:I heterostructures

Physica E Low-dimensional Systems and Nanostructures ◽

10.1016/s1386-9477(01)00278-8 ◽

2002 ◽

Vol 12 (1-4) ◽

pp. 361-365 ◽

Cited By ~ 6

Author(s):

T Andrearczyk ◽

J Jaroszyński ◽

G Karczewski ◽

J Wróbel ◽

T Wojtowicz ◽

...

Keyword(s):

Electron Transport ◽

Spin Polarization

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High-efficiency spin polarization in electron transport through the graphene nanoribbon coupled to chromium triiodide

Journal of Physics D Applied Physics ◽

10.1088/1361-6463/ab35a2 ◽

2019 ◽

Vol 52 (43) ◽

pp. 435304 ◽

Cited By ~ 1

Author(s):

Xiao Han ◽

Tian-Fang Zheng ◽

Cui Jiang ◽

Lin Li ◽

Wei-Jiang Gong

Keyword(s):

Electron Transport ◽

Spin Polarization ◽

High Efficiency ◽

Graphene Nanoribbon

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Ballistic electron transport in hybrid ferromagnet/two-dimensional electron gas sandwich nanostructure: Spin polarization and magnetoresistance effect

Journal of Applied Physics ◽

10.1063/1.3041477 ◽

2009 ◽

Vol 105 (1) ◽

pp. 013708 ◽

Cited By ~ 19

Author(s):

Y. Wang ◽

N. F. Chen ◽

Y. Jiang ◽

X. W. Zhang

Keyword(s):

Electron Transport ◽

Spin Polarization ◽

Electron Gas ◽

Two Dimensional ◽

Dimensional Electron ◽

Magnetoresistance Effect ◽

Two Dimensional Electron Gas ◽

Ballistic Electron ◽

Ballistic Electron Transport ◽

Dimensional Electron Gas

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The effect of spin polarization on the electron transport of molecular wires with diradical character

Physical Chemistry Chemical Physics ◽

10.1039/d0cp06321e ◽

2021 ◽

Vol 23 (8) ◽

pp. 4777-4783 ◽

Cited By ~ 1

Author(s):

Nicolás Ramos-Berdullas ◽

Sara Gil-Guerrero ◽

Ángeles Peña-Gallego ◽

Marcos Mandado

Keyword(s):

Electron Transport ◽

Spin Polarization ◽

Molecular Wires ◽

Good Alternative ◽

Spin Polarized ◽

Diradical Character

Spin polarized UDFT calculations reflect, contrary to RDFT, a decreasing conductance with length in molecular wires with diradical character. This method turns to be a good alternative to more expensive multireference post-SCF methods.

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