Thermal and Electrical Performance Study of Cold-Finger ³He Cryostat in Precision Measurement of Quantum Hall Resistance and Single-Electron Current. - Young-Seok Ghee; Wan-Seop Kim; Dong-Hun Chae; Bum-Kyu Kim; Jesse Muhojoki; Myung-Ho Bae; Nam Kim (IEEE Trans. Instrum. Meas., 2021)