Abstract
A pseudomagnetic field kink can be realized along a graphene nanoribbon using strain engineering. Electron transport along this kink is governed by snake states that are characterized by a single propagation direction. Those pseudomagnetic fields point towards opposite directions in the K and K′ valleys, leading to valley polarized snake states. In a graphene nanoribbon with armchair edges this effect results in a valley filter that is based only on strain engineering. We discuss how to maximize this valley filtering by adjusting the parameters that define the stress distribution along the graphene ribbon.
| Original language | English (US) |
|---|---|
| Article number | 075432 |
| Journal | Physical Review B |
| Volume | 94 |
| Issue number | 7 |
| DOIs | |
| State | Published - Aug 23 2016 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2016 American Physical Society.