High-frequency rectification via chiral Bloch electrons
Author(s)Isobe, Hiroki; Xu, Suyang; Fu, Liang
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Rectification is a process that converts electromagnetic fields into a direct current. Such a process underlies a wide range of technologies such as wireless communication, wireless charging, energy harvesting, and infrared detection. Existing rectifiers are mostly based on semiconductor diodes, with limited applicability to small-voltage or high-frequency inputs. Here, we present an alternative approach to current rectification that uses the intrinsic electronic properties of quantum crystals without using semiconductor junctions. We identify a previously unknown mechanism for rectification from skew scattering due to the inherent chirality of itinerant electrons in time-reversal invariant but inversion-breaking materials. Our calculations reveal large, tunable rectification effects in graphene multilayers and transition metal dichalcogenides. Our work demonstrates the possibility of realizing high-frequency rectifiers by rational material design and quantum wave function engineering.
DepartmentMassachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Materials Research Laboratory
American Association for the Advancement of Science (AAAS)
Isobe, Hiroki, Su-Yang Xu and Liang Fu. “High-frequency rectification via chiral Bloch electrons.” Science Advances, 6, 13 (March 2020): eaay2497 © 2020 The Author(s)
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