5 papers
Optics with Quantum Hall Skyrmions
T. Portengen, J. R. Chapman, V. Nikos Nicopoulos +1
A novel type of charged excitation, known as a Skyrmion, has recently been discovered in quantum Hall systems with filling factor near ν= 1. A Skyrmion -- which can be thought of a…
Photoluminescence signatures of negatively charged magnetoexcitons
J. R. Chapman, N. F. Johnson, V. N. Nicopoulos
The negatively charged quasi-two-dimensional exciton () is studied numerically in the presence of a uniform B-field and various in-plane confinements. The corresponding photol…
Skyrmionic excitons
T. Portengen, J. R. Chapman, V. Nikos Nicopoulos +1
We investigate the properties of a Skyrmionic exciton consisting of a negatively charged Skyrmion bound to a mobile valence hole. A variational wave function is constructed which h…
Photoluminescence signature of skyrmions at ν= 1
T. Portengen, J. R. Chapman, V. Nikos Nicopoulos +1
The photoluminescence spectrum of quantized Hall states near filling factor ν= 1 is investigated theoretically. For ν>= 1 the spectrum consists of a right-circularly polarized (RCP…
Stability of optically-active charged excitons in quasi-two dimensional systems
James R. Chapman, Neil F. Johnson, V. Nikos Nicopoulos
A negatively charged quasi-two dimensional exciton () is solved exactly numerically in the presence of a uniform perpendicular B-field. Various quasi-two dimensional geometrie…