Song Zhi-Jun, Lü Zhao-Zheng, Dong Quan, Feng Jun-Ya, Ji Zhong-Qing, Jin Yong, Lü Li. Shot noise measurement for tunnel junctions using a homemade cryogenic amplifier at dilution refrigerator temperaturesJ. Acta Physica Sinica, 2019, 68(7): 070702. DOI: 10.7498/aps.68.20190114