Dispersion of Faraday rotation in Co/SiO2 multilayer films

Strong Coupling of the Cyclotron Motion of Surface Electrons on Liquid Helium to a Microwave Cavity

“…In addition to microwave cavity reflection measurements, we also performed simultaneous detection of the ac current in the 2DES induced by cavity field. Because it is very difficult to measure such a high frequency current directly, we employed its detection using electron bolometric photoresponse [29]. The method is based on the effect of heating induced by ac current of SEs on the electron dc resistivity [30].…”

“…This field leads to suppression of electron scattering within the Landau level (LL), and, therefore, a reduction in ν. For small powers, the cyclotron resonance linewidth is about 100 MHz [29] and, since g < ν, γ, the system is not in the strong coupling regime and the normal mode splitting is not ob-served. With increasing power, reduction in ν allows to reach the strong coupling regime, and the normal-mode splitting is observed.…”

Thermopower-Based Hot Electron Thermometry of Helium Surface States at 1.6 K

“…Of equal importance are the inelastic scattering processes which are characterized with the energy relaxation of SSE.There is a great deal of interest in understanding inelastic scattering of the SSE. Inelastic processes [4][5][6][7] are fundamental for understanding and describing a wide variety of SSE phenomena including non-linear transport [4,[8][9][10][11] and microwave absorption line shapes [12][13][14][15]. Further, renewed interest in these processes has emerged with the realization that the energy relaxation rates determine the coherence times of Rydberg state based SSE qubits [6,[16][17][18][19][20].Electron thermometry is crucial for experimental measurement of energy relaxation, but thermometry of hot SSE presents a serious challenge.…”