Small area, low-inductance niobium SQUID for the detection of single atomic spin-flips

摘要: Abstract We report progress towards a superconducting quantum interference device (SQUID) based system capable of detecting single atomic spin-flips. To date we have designed and had manufactured niobium SQUID with loop area 3×10 −6 m by m. present calculations which show that it is few spins in 1 Hz bandwidth, experimental results are given operates close to the quantum-limit regime expected sensitivity. The so will fit into sample holder be loaded low-temperature ultra-high vacuum scanning tunnelling microscope (LT UHV STM). STM used image manipulate trapped ad-atoms within loop.