scholarly journals k-space spin filtering effect in the epitaxial Fe/Au/Fe/GaAs(001) spin-valve

2013 ◽  
Vol 103 (20) ◽  
pp. 202408 ◽  
Author(s):  
M. Hervé ◽  
S. Tricot ◽  
Y. Claveau ◽  
G. Delhaye ◽  
B. Lépine ◽  
...  
Keyword(s):  
Spin Valve ◽  
Filtering Effect ◽  
Spin Filtering

scholarly journals Strong spin-filtering and spin-valve effects in a molecular V–C60–V contact

2012 ◽  
Vol 3 ◽  
pp. 589-596 ◽  
Author(s):  
Mohammad Koleini ◽  
Mads Brandbyge
Keyword(s):  
Electronic Properties ◽  
Electronic Transport ◽  
First Principles ◽  
Spin Valve ◽  
Spin Coupling ◽  
First Principles Calculations ◽  
Filtering Effect ◽  
Majority Spin ◽  
Strong Spin ◽  
Spin Filtering

Motivated by the recent achievements in the manipulation of C60 molecules in STM experiments, we study theoretically the structure and electronic properties of a C60 molecule in an STM tunneljunction with a magnetic tip and magnetic adatom on a Cu(111) surface using first-principles calculations. For the case of a vanadium tip/adatom, we demonstrate how spin coupling between the magnetic V atoms, mediated by the C60, can be observed in the electronic transport, which display a strong spin-filtering effect, allowing mainly majority-spin electrons to pass (>95%). Moreover, we find a significant change in the conductance between parallel and anti-parallel spin polarizations in the junction (86%) which suggests that STM experiments should be able to characterize the magnetism and spin coupling for these systems.

scholarly journals Vacancy tuned thermoelectric properties and high spin filtering performance in graphene/silicene heterostructures

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Zainab Gholami ◽  
Farhad Khoeini
Keyword(s):  
Electric Fields ◽  
High Spin ◽  
High Efficiency ◽  
Practical Applications ◽  
External Electric Fields ◽  
Ferromagnetic Exchange ◽  
High Spin Polarization ◽  
Filtering Effect ◽  
Spin Switching ◽  
Spin Filtering

AbstractThe main contribution of this paper is to study the spin caloritronic effects in defected graphene/silicene nanoribbon (GSNR) junctions. Each step-like GSNR is subjected to the ferromagnetic exchange and local external electric fields, and their responses are determined using the nonequilibrium Green’s function (NEGF) approach. To further study the thermoelectric (TE) properties of the GSNRs, three defect arrangements of divacancies (DVs) are also considered for a larger system, and their responses are re-evaluated. The results demonstrate that the defected GSNRs with the DVs can provide an almost perfect thermal spin filtering effect (SFE), and spin switching. A negative differential thermoelectric resistance (NDTR) effect and high spin polarization efficiency (SPE) larger than 99.99% are obtained. The system with the DV defects can show a large spin-dependent Seebeck coefficient, equal to Ss ⁓ 1.2 mV/K, which is relatively large and acceptable. Appropriate thermal and electronic properties of the GSNRs can also be obtained by tuning up the DV orientation in the device region. Accordingly, the step-like GSNRs can be employed to produce high efficiency spin caloritronic devices with various features in practical applications.

scholarly journals Transport properties of a three-shell icosahedral matryoshka cluster: a first-principles study

RSC Advances ◽  
2017 ◽  
Vol 7 (21) ◽  
pp. 12704-12710 ◽  
Author(s):  
Lu Zhang ◽  
Jing Huang ◽  
Weiyi Wang ◽  
Qunxiang Li ◽  
Jinlong Yang
Keyword(s):  
Transport Properties ◽  
Magnetic Moment ◽  
First Principles ◽  
Molecular Devices ◽  
Molecular Junction ◽  
First Principles Study ◽  
Cluster A ◽  
Filtering Effect ◽  
Spin Filtering

The molecular junction based on three-shell icosahedral matryoshka cluster with huge magnetic moment exhibits robust spin-filtering effect, which highlights it for promising applications in molecular devices.

Spin-filtering effect in a two-dimensional electron gas under a local fringe field

2007 ◽  
Vol 204 (12) ◽  
pp. 3958-3961 ◽  
Author(s):  
Seon-Gu Huh ◽  
Jonghwa Eom ◽  
Hyun Cheol Koo ◽  
Hyung-jun Kim ◽  
Joonyeon Chang ◽  
...  
Keyword(s):  
Electron Gas ◽  
Fringe Field ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Dimensional Electron Gas ◽  
Filtering Effect ◽  
Spin Filtering

Spin-polarized transport through a magnetic heterostructure: tunneling and spin filtering effect

2002 ◽  
Vol 299 (5-6) ◽  
pp. 616-621 ◽  
Author(s):  
Jun-Qiang Lu ◽  
Yong Guo ◽  
Feng Zhai ◽  
Bing-Lin Gu ◽  
Jing-Zhi Yu ◽  
...  
Keyword(s):  
Spin Polarized ◽  
Polarized Transport ◽  
Magnetic Heterostructure ◽  
Filtering Effect ◽  
Spin Polarized Transport ◽  
Spin Filtering

Magnetic proximity, magnetoresistance and spin filtering effect in a binuclear ferric phthalocyanine from first principles

2019 ◽  
Vol 53 (3) ◽  
pp. 035305 ◽  
Author(s):  
Xiaojie Liu ◽  
Tianjiao Wang ◽  
Li Niu ◽  
Yin Wang ◽  
Qiang Zhang ◽  
...  
Keyword(s):  
First Principles ◽  
Filtering Effect ◽  
Spin Filtering

Perfect Spin Filtering Effect on Fe3GeTe2-Based Van der Waals Magnetic Tunnel Junctions

2020 ◽  
Vol 124 (50) ◽  
pp. 27429-27435
Author(s):  
Lishu Zhang ◽  
Tao Li ◽  
Jie Li ◽  
Yanyan Jiang ◽  
Jiaren Yuan ◽  
...  
Keyword(s):  
Tunnel Junctions ◽  
Van Der Waals ◽  
Magnetic Tunnel Junctions ◽  
Filtering Effect ◽  
Spin Filtering
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