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12 papers · 1 filter
Potential-inserted quantum well design for quantum cascade terahertz lasers
R. Benchamekh, J. -M. Jancu, P. Voisin
We report on a new design of terahertz quantum cascade laser based on a single, potential-inserted quantum well active region. The quantum well properties are engineered through si…
Discovery of Orbital-Selective Cooper Pairing in FeSe
Peter O. Sprau, Andrey Kostin, Andreas Kreisel +7
The superconductor FeSe is of intense interest thanks to its unusual non-magnetic nematic state and potential for high temperature superconductivity. But its Cooper pairing mechani…
Reinventing Solid State Electronics: Harnessing Quantum Confinement in Bismuth Thin Films
Farzan Gity, Lida Ansari, Martin Lanius +4
Solid state electronics relies on the intentional introduction of impurity atoms or dopants into a semiconductor crystal and/or the formation of junctions between different materia…
Commensurate period Charge Density Modulations throughout the Pseudogap Regime
A. Mesaros, K. Fujita, S. D. Edkins +6
Theories based upon strong real space (r-space) electron electron interactions have long predicted that unidirectional charge density modulations (CDM) with four unit cell (4)…
Theoretical analysis of influence of random alloy fluctuations on the opto-electronic properties of site-controlled (111)-oriented InGaAs/GaAs quantum dots
R. Benchamekh, S. Schulz, E. P. O'Reilly
We use an tight-binding model to investigate the electronic and optical properties of realistic site-controlled (111)-oriented InGaAs/GaAs quantum dots. Special atten…
Spin splitting of electron states in lattice-mismatched (110)-oriented quantum wells
M. O. Nestoklon, S. A. Tarasenko, R. Benchamekh +1
We show that for lattice-mismatched zinc-blende-type (110)-grown quantum wells a significant contribution to the zero-magnetic-field spin splitting of electron subbands comes from…