Conductance spin-polarization filter in monolayer graphene with combined magneto-electric modulation

Liying Wang; Huaizhe Xu; Hailong Wang; Hui Pan; Yaping Zhang; Gaolong Zhang

doi:10.1016/j.physe.2014.03.027

Conductance spin-polarization filter in monolayer graphene with combined magneto-electric modulation

Liying Wang, Huaizhe Xu, Hailong Wang, Hui Pan, Yaping Zhang, Gaolong Zhang

Department of Electrical and Electronic Engineering

Research output: Journal Publication › Article › peer-review

2 Citations (Scopus)

Abstract

We have theoretically investigated the conductance and the conductance spin-polarization (P_G) with combined magneto-electric potential structure in monolayer graphene. The results show that P_G could be enhanced and hence reach maximum (P_G±=±1) no matter which one of the four barrier parameters is increased. These four barrier parameters are the intensity (β) and the width (w) of the magnetic barriers, the intensity (U) and the width (b) of the potential barriers. The above results indicate that it is easy to realize the spin filtering. The peak value of the conductance and its corresponding energy could be controlled by adjusting the corresponding four barrier parameters. Additionally, switching effect and low energy spin-up injection could be realized in the structure under certain specific conditions.

Original language	English
Pages (from-to)	185-190
Number of pages	6
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	61
DOIs	https://doi.org/10.1016/j.physe.2014.03.027
Publication status	Published - Jul 2014

Keywords

Conductance spin-polarization
Magneto-electric modulation
Monolayer graphene
Spin filtering
Spin injection
Switching effect

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/j.physe.2014.03.027

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title = "Conductance spin-polarization filter in monolayer graphene with combined magneto-electric modulation",

abstract = "We have theoretically investigated the conductance and the conductance spin-polarization (PG) with combined magneto-electric potential structure in monolayer graphene. The results show that PG could be enhanced and hence reach maximum (PG±=±1) no matter which one of the four barrier parameters is increased. These four barrier parameters are the intensity (β) and the width (w) of the magnetic barriers, the intensity (U) and the width (b) of the potential barriers. The above results indicate that it is easy to realize the spin filtering. The peak value of the conductance and its corresponding energy could be controlled by adjusting the corresponding four barrier parameters. Additionally, switching effect and low energy spin-up injection could be realized in the structure under certain specific conditions.",

keywords = "Conductance spin-polarization, Magneto-electric modulation, Monolayer graphene, Spin filtering, Spin injection, Switching effect",

author = "Liying Wang and Huaizhe Xu and Hailong Wang and Hui Pan and Yaping Zhang and Gaolong Zhang",

note = "Funding Information: This work was supported by the National Basic Research Program of China (Grant No. 2013CB934003 ) and the State Key Laboratory of Software Development Environment (Grant No. SKLSDE-2013ZX-28 ).",

year = "2014",

month = jul,

doi = "10.1016/j.physe.2014.03.027",

language = "English",

volume = "61",

pages = "185--190",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

publisher = "Elsevier",

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TY - JOUR

T1 - Conductance spin-polarization filter in monolayer graphene with combined magneto-electric modulation

AU - Wang, Liying

AU - Xu, Huaizhe

AU - Wang, Hailong

AU - Pan, Hui

AU - Zhang, Yaping

AU - Zhang, Gaolong

N1 - Funding Information: This work was supported by the National Basic Research Program of China (Grant No. 2013CB934003 ) and the State Key Laboratory of Software Development Environment (Grant No. SKLSDE-2013ZX-28 ).

PY - 2014/7

Y1 - 2014/7

N2 - We have theoretically investigated the conductance and the conductance spin-polarization (PG) with combined magneto-electric potential structure in monolayer graphene. The results show that PG could be enhanced and hence reach maximum (PG±=±1) no matter which one of the four barrier parameters is increased. These four barrier parameters are the intensity (β) and the width (w) of the magnetic barriers, the intensity (U) and the width (b) of the potential barriers. The above results indicate that it is easy to realize the spin filtering. The peak value of the conductance and its corresponding energy could be controlled by adjusting the corresponding four barrier parameters. Additionally, switching effect and low energy spin-up injection could be realized in the structure under certain specific conditions.

AB - We have theoretically investigated the conductance and the conductance spin-polarization (PG) with combined magneto-electric potential structure in monolayer graphene. The results show that PG could be enhanced and hence reach maximum (PG±=±1) no matter which one of the four barrier parameters is increased. These four barrier parameters are the intensity (β) and the width (w) of the magnetic barriers, the intensity (U) and the width (b) of the potential barriers. The above results indicate that it is easy to realize the spin filtering. The peak value of the conductance and its corresponding energy could be controlled by adjusting the corresponding four barrier parameters. Additionally, switching effect and low energy spin-up injection could be realized in the structure under certain specific conditions.

KW - Conductance spin-polarization

KW - Magneto-electric modulation

KW - Monolayer graphene

KW - Spin filtering

KW - Spin injection

KW - Switching effect

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U2 - 10.1016/j.physe.2014.03.027

DO - 10.1016/j.physe.2014.03.027

M3 - Article

AN - SCOPUS:84899867326

SN - 1386-9477

VL - 61

SP - 185

EP - 190

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

ER -

Conductance spin-polarization filter in monolayer graphene with combined magneto-electric modulation

Abstract

Keywords

ASJC Scopus subject areas

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