title: Generation, transport and detection of valley-polarized electrons in diamond.
abstract: Standard electronic devices encode bits of information by controlling the amount of electric charge in the circuits. Alternatively, it is possible to make devices that rely on other properties of electrons than their charge. For example, spintronic devices make use of the electron spin angular momentum as a carrier of information. A new concept is valleytronics in which information is encoded by the valley quantum number of the electron. The analogy between the valley and spin degrees of freedom also implies the possibility of valley-based quantum computing. In this Article, we demonstrate for the first time generation, transport (across macroscopic distances) and detection of valley-polarized electrons in bulk diamond with a relaxation time of 300 ns at 77 K. We anticipate that these results will form the basis for the development of integrated valleytronic devices.
authors.affiliation: Division for Electricity, Uppsala University, Box 534, S-751 21 Uppsala, Sweden. jan.isberg@angstrom.uu.se
authors.forename: Jan
authors.initials: J
authors.lastname: Isberg
authors.forename: Markus
authors.initials: M
authors.lastname: Gabrysch
authors.forename: Johan
authors.initials: J
authors.lastname: Hammersberg
authors.forename: Saman
authors.initials: S
authors.lastname: Majdi
authors.forename: Kiran Kumar
authors.initials: KK
authors.lastname: Kovi
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Twitchen