J. Phys. IV France 08 (1998) Pr3-185-Pr3-188
Cryogenic amplification system for ultra-low noise measurementsG. Lombardi, M. Macucci, R. Giannetti and B. Pellegrini
Dipartimento di Ingegneria dell'Informazione : Elettronica, Informatica e Telecomunicazioni, via Diotisalvi 2, 56126 Pisa, Italy
We present a low-cost ultra-low-noise cryogenic amplifier, which has been developed for the investigation of shot noise suppression and enhancement in double-barrier resonant-tunneling devices. Results of the noise measurements performed on the amplifier operating at liquid nitrogen temperature are discussed and compared to those obtained at room temperature.
© EDP Sciences 1998