scholarly journals Nonequilibrium spin injection in monolayer black phosphorus

2016 ◽  
Vol 18 (3) ◽  
pp. 1601-1606 ◽  
Author(s):  
Mingyan Chen ◽  
Zhizhou Yu ◽  
Yin Wang ◽  
Yiqun Xie ◽  
Jian Wang ◽  
...  
Keyword(s):  
Quantum Transport ◽  
First Principles ◽  
Spin Injection ◽  
Black Phosphorus ◽  
Spin Polarized ◽  
First Principles Method

Nonequilibrium spin injection and spin-polarized quantum transport in monolayer black phosphorus are studied using the first principles method.

Spin Injection into Graphene from Heusler Alloy Co2MnGe (111) Surface: A First Principles Study

2018 ◽  
Vol 914 ◽  
pp. 111-116 ◽  
Author(s):  
Ya Xin Wang ◽  
Tong Sheng Xia
Keyword(s):  
First Principles ◽  
Heusler Alloy ◽  
Spin Injection ◽  
Ferromagnetic Material ◽  
Nonequilibrium State ◽  
Tunnel Barrier ◽  
Injection Efficiency ◽  
Spintronic Devices ◽  
First Principles Study ◽  
Spin Polarized

To obtain a larger spin signal for use in graphene-based spintronic devices, the spin injection efficiency needs to be enhanced. Previously researchers can increase the efficiency by inserting a tunnel barrier such as Al2O3or MgO between ferromagnet and graphene. However, the key value in spin transport is still very low because of the conductance mismatch as well as the limit to fabricate a high-quality tunnel barrier at the junction surface. Here we use a highly spin-polarized ferromagnetic material—Heusler alloy Co2MnGe as a substitutional scheme without the tunnel barrier. The spin injection efficiency of our Co2MnGe (111)/graphene junction can be as high as 73% which is much higher than 1% of ferromagnet/graphene or 30% of ferromagnet/oxide/graphene using first-principles study. The large spin polarization can be explicated by analyzing the transmission spectrum at the nonequilibrium state.

scholarly journals First-Principles Quantum Transport Modeling of Spin-Transfer and Spin-Orbit Torques in Magnetic Multilayers

2018 ◽  
pp. 1-35 ◽  
Author(s):  
Branislav K. Nikolić ◽  
Kapildeb Dolui ◽  
Marko D. Petrović ◽  
Petr Plecháč ◽  
Troels Markussen ◽  
...  
Keyword(s):  
Quantum Transport ◽  
First Principles ◽  
Magnetic Multilayers ◽  
Spin Transfer ◽  
Transport Modeling ◽  
Spin Orbit

Magnetic Properties of Embedded Rh Clusters in Ni Matrix

1995 ◽  
Vol 384 ◽  
Author(s):  
Zhi-Qiang Li ◽  
Yuichi Hashi ◽  
Jing-Zhi Yu ◽  
Kaoru Ohno ◽  
Yoshiyuki Kawazoe
Keyword(s):  
Magnetic Properties ◽  
Electronic Structure ◽  
First Principles ◽  
Density Functional ◽  
Local Density ◽  
Magnetic Moments ◽  
Functional Formalism ◽  
Rhodium Clusters ◽  
Spin Polarized ◽  
Local Density Functional

ABSTRACTThe electronic structure and magnetic properties of rhodium clusters with sizes of 1 - 43 atoms embedded in the nickel host are studied by the first-principles spin-polarized calculations within the local density functional formalism. Single Rh atom in Ni matrix is found to have magnetic moment of 0.45μB. Rh13 and Rhl 9 clusters in Ni matrix have lower magnetic moments compared with the free ones. The most interesting finding is tha.t Rh43 cluster, which is bulk-like nonmagnetic in vacuum, becomes ferromagnetic when embedded in the nickel host.

scholarly journals Strain-enhanced giant Rashba spin splitting in ultrathin KTaO3 films for spin-polarized photocurrents

RSC Advances ◽  
2020 ◽  
Vol 10 (72) ◽  
pp. 44088-44095
Author(s):  
Ning Wu ◽  
Xue-Jing Zhang ◽  
Bang-Gui Liu
Keyword(s):  
First Principles ◽  
Biaxial Stress ◽  
Spin Splitting ◽  
Semiconductor Surfaces ◽  
Surfaces And Interfaces ◽  
Rashba Spin ◽  
Spin Polarized ◽  
Rashba Spin Splitting

Strong Rashba effects at semiconductor surfaces and interfaces have attracted attention for exploration and applications. We show with first-principles investigation that applying biaxial stress can cause tunable and giant Rashba effects in ultrathin KTaO3 (KTO) (001) films.

Distribution of iron moments ina‐Fe glass by first‐principles spin‐polarized calculations

1991 ◽  
Vol 69 (8) ◽  
pp. 5460-5462 ◽  
Author(s):  
Yong‐Nian Xu ◽  
Yi He ◽  
W. Y. Ching
Keyword(s):  
First Principles ◽  
Spin Polarized

Electronic, optical property and carrier mobility of graphene, black phosphorus, and molybdenum disulfide based on the first principles

2018 ◽  
Vol 27 (11) ◽  
pp. 118106 ◽  
Author(s):  
Congcong Wang ◽  
Xuesheng Liu ◽  
Zhiyong Wang ◽  
Ming Zhao ◽  
Huan He ◽  
...  
Keyword(s):  
Optical Property ◽  
Molybdenum Disulfide ◽  
First Principles ◽  
Carrier Mobility ◽  
Black Phosphorus
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