Switching spin and charge between edge states in topological insulator constrictions: a transer matrix approach

Viktor Krueckl; Klaus Richter

doi:10.1117/12.931306

9 October 2012 Switching spin and charge between edge states in topological insulator constrictions: a transer matrix approach

Viktor Krueckl, Klaus Richter

Author Affiliations +

Proceedings Volume 8461, Spintronics V; 84610Z (2012) https://doi.org/10.1117/12.931306
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

Abstract

We show how the different spin polarized edge states of the two-dimensional topological insulator mercury telluride can be selectively switched within an elongated constriction. To this end, we derive an effective onedimensional Hamiltonian incorporating the confinement induced gap between right- and left-moving edge states, as well as an energy dependent effective spin-orbit interaction. By means of a transfer matrix approach, we study the transport properties based on this model Hamiltonian and reveal switching characteristics that can serve as the building block for a three state spin- and charge transistor based on a locally gated topological insulator constriction.

Citation Download Citation

Viktor Krueckl and Klaus Richter "Switching spin and charge between edge states in topological insulator constrictions: a transer matrix approach", Proc. SPIE 8461, Spintronics V, 84610Z (9 October 2012); https://doi.org/10.1117/12.931306

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available