Development of a Spatially Resolved He Quasi-Particle Detector

作者：Barquist C S^*; Zheng P; Jiang W G; Lee Y; Yoon Y K; Schumann T; Nogan J; Lilly M

来源：Journal of Low Temperature Physics, 2016, 183(3-4): 307-312.

DOI：10.1007/s10909-015-1371-1

• Helium
• He-3-B
• Quasi-particle
• Detector

Andreev surface bound sates are known to exist on the boundaries of superfluid He-B. However, the detailed nature of their interaction with bulk quasi-particles is not well known. In a manner similar to angle-resolved photo-emission spectroscopy, surface states can be probed by measuring the change in momentum of bulk quasi-particles scattered from the surface. In order to make such a measurement, we have designed a spatially resolved quasi-particle detector. The detector consists of an array of micro-machined resonators, which are sensitive to quasi-particle flux. The detector is based on previously developed micro-machined resonators, which have been successfully used to study superfluid He-B and He. Presented here is the design of the detector and the fabrication procedure.

• 出版日期2016-5