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Magnetoresistance and shot noise in graphene-based nanostructure with effective exchange field
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10.1063/1.4770494
/content/aip/journal/jap/112/12/10.1063/1.4770494
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/12/10.1063/1.4770494
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Model of graphene nanostructure with effective exchange field. (a)denotes the homogeneous graphene nanostructure without periodic modulation, and (b) denotes the graphene superlattice with periodic gate and EEF modulations. and represent the length of single cell and the total length of system, respectively.

Image of FIG. 2.
FIG. 2.

(a) and (b) Bulk states band structure with . (a) for the EEF case, , (b) for the RSOI case, the strength of RSOI . (c)and (d) Transmission spectrum with the total width , , and . (c) For the EEF case, (d) for the RSOI case.

Image of FIG. 3.
FIG. 3.

Magnetoresistance [(a), (c), and (e)] and conductance [(b), (d), and (f)] as a function of the EEF strength and the RSOI strength . The energy used in the calculation . (a)–(d) correspond to the result of homogeneous graphene, and (e) and (f) correspond to the result of graphene superlattice of 10 periodic potential structures with . for [(a)–(d)] and for [(e) and (f)]. The effective conductance , here .

Image of FIG. 4.
FIG. 4.

Fano factor as a function of the EEF strength . (a) corresponds to the result of homogeneous graphene, and (b)–(c) correspond to the result of graphene superlattice. for (a) and for (b) and (c). for (b) and for (c). The other parameters used are identical to those in Fig. 3.

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/content/aip/journal/jap/112/12/10.1063/1.4770494
2012-12-27
2014-04-17
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Magnetoresistance and shot noise in graphene-based nanostructure with effective exchange field
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/12/10.1063/1.4770494
10.1063/1.4770494
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