Spin-dependent transport properties of a chromium porphyrin-based molecular embedded between two graphene nanoribbon electrodes

被引：29

作者：

Chen, Tong ^{[1
,2
]}

Wang, Lingling ^{[1
,2
]}

Li, Xiaofei ^{[3
]}

Luo, Kaiwu ^{[1
,2
]}

Xu, Liang ^{[1
,2
]}

Li, Quan ^{[1
,2
]}

Zhang, Xianghua ^{[1
,2
,4
]}

Long, Mengqiu ^{[3
,5
]}

机构：

[1] Hunan Univ, Sch Phys & Microelect Sci, Changsha 410082, Hunan, Peoples R China

[2] Key Lab Micro Nano Phys & Technol Hunan Prov, Changsha 410082, Hunan, Peoples R China

[3] Univ Elect Sci & Technol China, Sch Optoelect Informat, Chengdu 610054, Sichuan, Peoples R China

[4] Hunan Inst Engn, Dept Elect & Informat Engn, Xiangtan 411101, Peoples R China

[5] Cent S Univ, Inst Super Microstruct & Ultrafast Proc, Sch Phys & Elect, Changsha 410083, Hunan, Peoples R China

来源：

RSC ADVANCES | 2014年 / 4卷 / 104期

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

NEGATIVE DIFFERENTIAL RESISTANCE; SPINTRONIC DEVICES; FILTER; BEHAVIORS; JUNCTIONS; CHAIN;

D O I：

10.1039/c4ra09279a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

By using the non-equilibrium Green's function formalism combined with density-functional theory, we present a theoretical study of the spin-dependent electron transport of a molecular device constructed from a chromium porphyrin molecule linking with two carbon chains sandwiched between two semi-infinite zigzag-edged graphene nanoribbon (ZGNR) electrodes, where the ZGNRs are modulated by an external magnetic field. The results show that the single spin-conducting can be obtained by performing different magnetic configuration of the leads. The coexistence of spin-filtering with 100% spin-polarization, rectifying and negative differential resistance (NDR) behaviors in our model device is demonstrated and mechanisms are proposed for these phenomena.

引用

页码：60376 / 60381

页数：6

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