214 citations · 1.4k across the 34 of their papers we have counts for
8 papers · 1 filter
Optical manipulation of the exciton charge state in single layer tungsten disulfide
A. A. Mitioglu, P. Plochocka, J. N. Jadczak +4
Raman scattering and photoluminescence (PL) emission are used to investigate a single layer of tungsten disulfide (WS) obtained by exfoliating n-type bulk crystals. Direct ga…
High magnetic field reveals the nature of excitons in a single GaAs/AlAs core/shell nanowire
P. Plochocka, A. A. Mitioglu, D. K. Maude +5
Magneto-photoluminescence measurements of individual zinc-blende GaAs/AlAs core/shell nanowires are reported. At low temperature a strong emission line at 1.507 eV is observed unde…
High Field magnetospectroscopy to probe the 1.4eV Ni color center in diamond
P. Plochocka, O. Portugall, P. Y. Solane +8
A magneto-optical study of the 1.4 eV Ni color center in boron-free synthetic diamond, grown at high pressure and high temperature, has been performed in magnetic fields up to 56 T…
The origin of electron-hole asymmetry in graphite
P. Plochocka, P. Y. Solane, R. J. Nicholas +5
The electron hole asymmetry has been measured in natural graphite using magneto-optical absorption measurements. A splitting is observed for the transitions at both the -point a…
High field magneto-transmission investigation of natural graphite
N. Ubrig, P. Plochocka, P. Kossacki +4
Magneto-transmission measurements in magnetic fields in the range B=20-60T have been performed to probe the H and K-point Landau level transitions in natural graphite. At the H-poi…
Magnetic Brightening of Carbon Nanotube Photoluminescence through Symmetry Breaking
J. Shaver, J. Kono, O. Portugall +5
Often a modification of microscopic symmetry in a system can result in a dramatic change in its macroscopic properties. Here we report that symmetry breaking by a tube-threading ma…
Excitons in Carbon Nanotubes with Broken Time-Reversal Symmetry
S. Zaric, G. N. Ostojic, J. Shaver +10
Near-infrared magneto-optical spectroscopy of single-walled carbon nanotubes reveals two absorption peaks with an equal strength at high magnetic fields ( 55 T). We show that th…
Optics of a Faraday-active Mie Sphere
D. Lacoste, B. A. van Tiggelen
We present an exact calculation for the scattering of light from a single sphere made of a Faraday-active material, into first order of the external magnetic field. When the size o…