Research in Undergraduate Institutions: Experimental Studies of Excess Inverse Frequency Noise in SQUID Systems (Materials Research)

研究了超导量子干涉器件（SQUID）的逆频率（1/f）噪声。这些实验研究将确定与SQUID测量环境有关的因素的重要性。发现环境引入的噪声比SQUID的固有噪声更大。人们将对许多可疑的环境噪声源及其相对重要性有新的认识。要研究的环境噪声源包括热磁噪声、环境磁场噪声效应、传感器温度变化效应和读出电路不稳定性效应。由于squid越来越多地用于敏感的测量应用，因此预计技术应用将得到应用。

The inverse frequency (1/f) noise of a superconducting quantum interference device (SQUID) is investigated. These experimental studies will determine the importance of factors relating to the measurement environment with the SQUID. The environment is found to introduce greater noise than the intrinsic noise of the SQUID. A new understanding of many of the suspected sources of the environmental noise and their relative importance will be obtained. The environmental sources of noise to be studied include thermomagnetic noise, noise effects of ambient magnetic fields, sensor temperature variation effects, and readout circuit instability effects. Technological applications are anticipated since the SQUIDs are used increasingly in sensitive measurement applications.