Performance of nano superconducting quantum interference devices for small spin cluster detection
作者： C. Granata , A. Vettoliere , P. Walke , C. Nappi , M. Russo
DOI: 10.1063/1.3183959
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摘要: In the present paper, performance of nano-superconducting-quantum-interference devices (SQUIDs) has been investigated in view their employment detection small spin populations. The analysis focused on nano-SQUID sensors having a square loop with side length 200 nm. We calculate sensitivity and magnetic response relative to single Bohr magneton (single spin), as function its position within SQUID hole. results show that depends strongly position; ratio between evaluated center minimum one is high factor 3 for at reasonable distance z′ 10 nm from plane. Furthermore, flux due several hundred spins by considering different random distributions Due both nonuniform distribution process, statistical uncertainty which b...
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