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METHOD AND DEVICE FOR VERY HIGH SENSITIVITY ELECTRON SPIN RESONANCE SPECTROSCOPY
METHOD AND DEVICE FOR VERY HIGH SENSITIVITY ELECTRON SPIN RESONANCE SPECTROSCOPY
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机译:超高灵敏度电子自旋共振光谱的方法和装置
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摘要
A device for detecting and characterising electron spins in a sample includes an electromagnetic microresonator, having a resonant frequency cor in the microwave range and a quality factor Q and into which the sample is inserted; a device for creating a magnetic field B0 in the sample for bringing a spin transition frequency cos into resonance with the resonant frequency cor, such that cos=γB0, where γ is a gyromagnetic factor of the spins; a spin detection device receiving signals from the electromagnetic microresonator associated with the sample and including at least one low-noise amplifier operating at a temperature of between 1 and 10 K and a series of amplifiers and a demodulator operating at ambient temperature.
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