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High-frequency rectification via chiral Bloch electrons.
Isobe, Hiroki; Xu, Su-Yang; Fu, Liang.
Afiliación
  • Isobe H; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  • Xu SY; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
  • Fu L; Department of Physics, Massachusetts Institute of Technology, Cambridge, MA 02139, USA.
Sci Adv ; 6(13): eaay2497, 2020 Mar.
Article en En | MEDLINE | ID: mdl-32258396
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.

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2020 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Estados Unidos