摘要
We adopted double-side fabrication process to prepare intrinsic Josephson junctions (IJJs) based on Bi2Sr2CaCu2O8+x (BSCCO) single crystals. Using crystal cleavage and double-side argon ion milling, we have successfully fabricated very uniform IJJs with the thickness of single crystal slice less than 200 nm. Using quasi-optical system, the response of the IJJs to millimeter wave radiation was studied. With applied magnetic field perpendicular to a-b plane, we have observed Shapiro steps under millimeter wave radiation, and the Josephson oscillation of each junction was phase-locking.
We adopted double-side fabrication process to prepare intrinsic Josephson junctions （IJJs） based on Bi2Sr2CaCu2Os＋x （BSCCO） single crystals. Using crystal cleavage and double-side argon ion milling, we have successfully fabricated very uniform IJJs with the thickness of single crystal slice less than 200 nm. Using quasi-optical system, the response of the IJJs to millimeter wave radiation was studied. With applied magnetic field perpendicular to a-b plane, we have observed Shapiro steps under millimeter wave radiation, and the Josephson oscillation of each junction was phase-locking.
基金
Supported by the National Natural Science Foundation of China (Grant Nos. 60571007, 10778602, 60721063, 60610050)
National Basic Research Program of China (Grant No. 2006CB601006)
the Fund of Jiangsu Province (Grant No. BK2007713)
