Can I read Strain manipulation of Majorana fermions in graphene armchair nanoribbons on EtoBox?

Strain manipulation of Majorana fermions in graphene armchair nanoribbons by Wang, Zhen-Hua; Castro, Eduardo V.; Lin, Hai-Qing is a scholarly article available to read on EtoBox.

What is Strain manipulation of Majorana fermions in graphene armchair nanoribbons about?

Graphene nanoribbons with armchair edges are studied for externally enhanced, but realistic parameter values: enhanced Rashba spin-orbit coupling due to proximity to a transition metal dichalcogenide like WS$_{2}$, and enhanced Zeeman field due to exchange coupling with a magnetic insulator like EuS under applied magnetic field. The presence of s--wave superconductivity, induced either by proximity or by decoration with alkali metal atoms like Ca or Li, leads to a topological superconducting phase with Majorana end modes. The topological phase is highly sensitive to the application of uniaxial strain, with a transition to the trivial state above a critical strain well below $0.1\%$. This sensitivity allows for real space manipulation of Majorana fermions by applying non-uniform strain profiles. Similar manipulation is also possible by applying inhomogeneous Zeeman field or chemical potential.

Author

Wang, Zhen-Hua; Castro, Eduardo V.; Lin, Hai-Qing

Published

2017

Language

EN