Excitonic devices

LV Butov - Superlattices and Microstructures, 2017 - Elsevier
Indirect excitons can be controlled by voltage, can travel over large distances before
recombination, and can cool down close to the temperature of semiconductor crystal lattice …

Theory of condensation of indirect excitons in a trap

SV Lobanov, NA Gippius, LV Butov - Physical Review B, 2016 - APS
We present theoretical studies of condensation of indirect excitons in a trap. Our model
quantifies the effect of screening of the trap potential by indirect excitons on exciton …

Variational approach to the soft-Coulomb potential in low-dimensional quantum systems

F Grasselli - American Journal of Physics, 2017 - pubs.aip.org
The variational method is used to obtain the ground-and first-excited states for the soft-
Coulomb central potential, 1/r 2+ d 2⁠, characterized by a bias distance d, taken into …

Split-gate device for indirect excitons

CJ Dorow, JR Leonard, MM Fogler, LV Butov… - Applied Physics …, 2018 - pubs.aip.org
We present a concept and experimental proof of principle for split-gate devices for indirect
excitons (IXs). The split-gate forms a narrow channel, a point contact, for IX current. Control …

Dipolar polaritons in microcavity-embedded coupled quantum wells in electric and magnetic fields

J Wilkes, EA Muljarov - Physical Review B, 2016 - APS
We present a microscopic calculation of spatially indirect exciton states in semiconductor
coupled quantum wells and polaritons formed from their coupling to the optical mode of a …

Dynamics and Hall-edge-state mixing of localized electrons in a two-channel Mach-Zehnder interferometer

L Bellentani, A Beggi, P Bordone, A Bertoni - Physical Review B, 2018 - APS
We present a numerical study of a multichannel electronic Mach-Zehnder interferometer,
based on magnetically driven noninteracting edge states. The electron path is defined by a …

Classical and quantum dynamics of indirect excitons driven by surface acoustic waves

F Grasselli, A Bertoni, G Goldoni - Physical Review B, 2018 - APS
We perform explicit time-dependent classical and quantum propagation of a spatially
indirect exciton (SIX) driven by surface acoustic waves (SAWs) in a semiconductor …

Spatiotemporal dynamics of Coulomb-correlated carriers in semiconductors

F Lengers, R Rosati, T Kuhn, DE Reiter - Physical Review B, 2019 - APS
When the excitation of carriers in real space is focused down to the nanometer scale, the
carrier system can no longer be viewed as homogeneous, and ultrafast transport of the …

Time-dependent transport in graphene Mach-Zender interferometers

G Forghieri, P Bordone, A Bertoni - Physical Review B, 2022 - APS
Graphene nanoribbons provide an ideal platform for electronic interferometry in the integer
quantum Hall regime. Here, we solve the time-dependent four-component Schrödinger …

Exciton gas transport through nanoconstrictions

C Xu, JR Leonard, CJ Dorow, LV Butov, MM Fogler… - Nano …, 2019 - ACS Publications
An indirect exciton is a bound state of an electron and a hole in spatially separated layers.
Two-dimensional indirect excitons can be created optically in heterostructures containing …