Helicoidal graphene nanoribbons: Chiraltronics

被引：31

作者：

Atanasov, Victor ^{[1
]}

Saxena, Avadh ^{[2
,3
]}

机构：

[1] Univ Sofia, Dept Condensed Matter Phys, Sofia 1164, Bulgaria

[2] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA

[3] Los Alamos Natl Lab, Ctr Nonlinear Studies, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW B | 2015年 / 92卷 / 03期

关键词：

TWIST; FERMIONS; PHASE;

D O I：

10.1103/PhysRevB.92.035440

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a calculation of the effective geometry-induced quantum potential for the carriers in graphene shaped as a helicoidal nanoribbon. In this geometry the twist of the nanoribbon plays the role of an effective transverse electric field in graphene and this is reminiscent of the Hall effect. However, this effective electric field has a different sign for the two isospin states and translates into a mechanism to separate the two chiral species on the opposing rims of the nanoribbon. Isospin transitions are expected with the emission or absorption of microwave radiation which could be adjusted to be in the THz region.

引用

页数：5

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