Matches in SemOpenAlex for { <https://semopenalex.org/work/W2012861338> ?p ?o ?g. }
- W2012861338 abstract "The dephasing of the Fermi edge singularity excitations in two modulation doped single quantum wells of 12 nm and 18 nm thickness and in-well carrier concentration of ∼4 × 1011 cm−2 was carefully measured using spectrally resolved four-wave mixing (FWM) and two-dimensional Fourier transform (2DFT) spectroscopy. Although the absorption at the Fermi edge is broad at this doping level, the spectrally resolved FWM shows narrow resonances. Two peaks are observed separated by the heavy hole/light hole energy splitting. Temperature dependent “rephasing” (S1) 2DFT spectra show a rapid linear increase of the homogeneous linewidth with temperature. The dephasing rate increases faster with temperature in the narrower 12 nm quantum well, likely due to an increased carrier-phonon scattering rate. The S1 2DFT spectra were measured using co-linear, cross-linear, and co-circular polarizations. Distinct 2DFT lineshapes were observed for co-linear and cross-linear polarizations, suggesting the existence of polarization dependent contributions. The “two-quantum coherence” (S3) 2DFT spectra for the 12 nm quantum well show a single peak for both co-linear and co-circular polarizations." @default.
- W2012861338 created "2016-06-24" @default.
- W2012861338 creator A5011239951 @default.
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- W2012861338 creator A5072675803 @default.
- W2012861338 creator A5084456747 @default.
- W2012861338 date "2014-10-07" @default.
- W2012861338 modified "2023-09-27" @default.
- W2012861338 title "Exploring two-dimensional electron gases with two-dimensional Fourier transform spectroscopy" @default.
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- W2012861338 doi "https://doi.org/10.1063/1.4896777" @default.
- W2012861338 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/25296819" @default.
- W2012861338 hasPublicationYear "2014" @default.