Perfect spin filtering effect, tunnel magnetoresistance and thermoelectric effect in metals-adsorbed blue phosphorene nanoribbons

We investigate the electronic and transport properties of vanadium-doped zigzag blue phosphorus nanoribbons by first-principles quantum transport calculations.

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

Scientific Reports ◽

10.1038/s41598-021-94842-w ◽

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.

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Spin-filtering effect and proximity effect in normal metal/ferromagnetic insulator/normal metal/superconductor junctions

Journal of Magnetism and Magnetic Materials ◽

10.1016/j.jmmm.2007.02.205 ◽

2007 ◽

Vol 315 (2) ◽

pp. 77-81 ◽

Cited By ~ 1

Author(s):

Hong Li ◽

Wei Yang ◽

Xinjian Yang ◽

Minghui Qin ◽

Yihong Xu

Keyword(s):

Proximity Effect ◽

Normal Metal ◽

Filtering Effect ◽

Spin Filtering

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

RSC Advances ◽

10.1039/c7ra01003f ◽

2017 ◽

Vol 7 (21) ◽

pp. 12704-12710 ◽

Cited By ~ 2

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.

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