Engineering valley quantum interference in anisotropic van der Waals heterostructures

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

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3 Scopus citations

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 α-MoO3. 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.

Original languageEnglish (US)
Article number045416
JournalPhysical Review B
Volume102
Issue number4
DOIs
StatePublished - Jul 15 2020

Bibliographical note

Funding Information:
A.K. acknowledges funding from the Department of Science and Technology Grants No. SB/S2/RJN-110/2017, No. ECR/2018/001485, and No. DST/NM/NS-2018/49. We thank K. Khaliji for helpful discussions.

Publisher Copyright:
© 2020 American Physical Society.

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