"Kos, \u0160imon" . . . "Physical Review B" . "1"^^ . . "000274998100058" . "US - Spojen\u00E9 st\u00E1ty americk\u00E9" . "Spin noise of itinerant fermions"@en . . "81" . "Z(MSM4977751302)" . "[0FEE4DD2D05D]" . "289217" . "9"^^ . . "Spin noise of itinerant fermions" . . . "We develop a theory of spin-noise spectroscopy of itinerant, noninteracting, spin-carrying fermions in different regimes of temperature and disorder. We use kinetic equations for the density matrix in spin variables. We find a general result with a clear physical interpretation, and discuss its dependence on temperature, the size of the system, and applied magnetic field. We consider two classes of experimental probes: (1) electron-spin-resonance (ESR)-type measurements, in which the probe response to a uniform magnetization increases linearly with the volume sampled, and (2) optical Kerr/Faraday rotation-type measurements, in which the probe response to a uniform magnetization increases linearly with the length of the light propagation in the sample, but is independent of the cross section of the light beam. Our theory provides a framework for interpreting recent experiments on atomic gases and conduction electrons in semiconductors and provides a baseline for identifying the effects of interact" . "RIV/49777513:23520/10:00503289" . "Littlewood, Peter B." . . "Spins; noise; fermions; motion; fluctuation-dissipation theorem; kinetic equations"@en . . "Spin noise of itinerant fermions" . "6" . . . "We develop a theory of spin-noise spectroscopy of itinerant, noninteracting, spin-carrying fermions in different regimes of temperature and disorder. We use kinetic equations for the density matrix in spin variables. We find a general result with a clear physical interpretation, and discuss its dependence on temperature, the size of the system, and applied magnetic field. We consider two classes of experimental probes: (1) electron-spin-resonance (ESR)-type measurements, in which the probe response to a uniform magnetization increases linearly with the volume sampled, and (2) optical Kerr/Faraday rotation-type measurements, in which the probe response to a uniform magnetization increases linearly with the length of the light propagation in the sample, but is independent of the cross section of the light beam. Our theory provides a framework for interpreting recent experiments on atomic gases and conduction electrons in semiconductors and provides a baseline for identifying the effects of interact"@en . "1098-0121" . . . . "Smith, Darryl L." . . . "4"^^ . . "Balatsky, Alexander V." . "Spin noise of itinerant fermions"@en . "RIV/49777513:23520/10:00503289!RIV11-MSM-23520___" . "23520" . .