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Engineering valley quantum interference in anisotropic van der Waals heterostructures

Nalabothula, Muralidhar and Jha, Pankaj K. and Low, Tony and Kumar, Anshuman (2020) Engineering valley quantum interference in anisotropic van der Waals heterostructures. Physical Review B, 102 (4). Art. No. 045416. ISSN 2469-9950. doi:10.1103/physrevb.102.045416.

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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.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Nalabothula, Muralidhar0000-0002-9490-5307
Jha, Pankaj K.0000-0002-5839-3391
Low, Tony0000-0002-5759-5899
Kumar, Anshuman0000-0002-7433-8341
Alternate Title:Engineering quantum interference in van der Waals heterostructures
Additional Information:© 2020 American Physical Society. Received 9 October 2019; revised 12 June 2020; accepted 15 June 2020; published 15 July 2020. 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.
Funding AgencyGrant Number
Department of Science and Technology (India)SB/S2/RJN-110/2017
Department of Science and Technology (India)ECR/2018/001485
Department of Science and Technology (India)DST/NM/NS-2018/49
Issue or Number:4
Record Number:CaltechAUTHORS:20200716-073739415
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:104395
Deposited By: Tony Diaz
Deposited On:16 Jul 2020 16:03
Last Modified:16 Nov 2021 18:31

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