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Valleytronics: Opportunities, Challenges, and Paths Forward
Author(s) -
Vitale Steven A.,
Nezich Daniel,
Varghese Joseph O.,
Kim Philip,
Gedik Nuh,
JarilloHerrero Pablo,
Xiao Di,
Rothschild Mordechai
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201801483
Subject(s) - valleytronics , brillouin zone , point reflection , symmetry (geometry) , quantum information processing , position and momentum space , physics , momentum (technical analysis) , quantum , nanotechnology , computer science , condensed matter physics , materials science , quantum mechanics , spintronics , geometry , mathematics , finance , ferromagnetism , economics
A lack of inversion symmetry coupled with the presence of time‐reversal symmetry endows 2D transition metal dichalcogenides with individually addressable valleys in momentum space at the K and K′ points in the first Brillouin zone. This valley addressability opens up the possibility of using the momentum state of electrons, holes, or excitons as a completely new paradigm in information processing. The opportunities and challenges associated with manipulation of the valley degree of freedom for practical quantum and classical information processing applications were analyzed during the 2017 Workshop on Valleytronic Materials, Architectures, and Devices; this Review presents the major findings of the workshop.