Work

Engineering valley quantum interference in anisotropic van der Waals heterostructures

Year: 2020

Type: article

Abstract: In this paper, we present a novel route to manipulate the spontaneous valley coherence in two-dimensional valleytronic materials interfaced with other layered materials hosting anisotropic polaritonic modes. We propose two implementations---one, using anisotropic plasmons in phosphorene and another with hyperbolic phonon polaritons in $\ensuremath{\alpha}\text{\ensuremath{-}}{\mathrm{MoO}}_{3}$. In particular, we show the electrostatic tunability of the spontaneous valley coherence achieving robust valley coherence values in the near-infrared wavelengths at room temperature. The tunability of this valley coherence shown in these heterostructures would enable the realization of active valleytronic quantum circuitry.

Source: Physical review. B./Physical review. B

DOI: 10.1103/physrevb.102.045416

Authors: Muralidhar Nalabothula, Pankaj K. Jha, Tony Low, Anshuman Kumar

Institutions: Indian Institute of Technology Bombay, California Institute of Technology, University of Minnesota

Language: English

Topic: 2D Materials and Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: green

Funder: Department of Science and Technology, Ministry of Science and Technology, India

Awards: G2320493248, G2859210545, G3111988236