Detection of spin polarization with a side-coupled quantum dot
Tomohiro Otsuka, Eisuke Abe, Yasuhiro Iye, and Shingo Katsumoto
Phys. Rev. B 79 195313 (2009) Modify
We propose realistic methods to detect local spin polarization, which utilize a quantum dot side coupled to the target system. By choosing appropriate states in the dot, we can put spin selectivity to the dot and detect spins in the target with small disturbance. We also present an experiment which realizes one of the proposed spin-detection schemes in magnetic fields.