Current–phase relations of a ring-trapped Bose–Einstein condensate with a weak link<xref rid="cpb_28_1_010303fn1" ref-type="fn">*</xref> <fn id="cpb_28_1_010303fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 11874247), the National Key Research and Development Program of China (Grant Nos. 2017YFA0304500 and 2017YFA0304203), PCSIRT, China (Grant No. IRT-17R70), and the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices, China (Grant No. KF201703).</p> </fn>

Current–phase relations of a ring-trapped Bose–Einstein condensate with a weak link* *

Project supported by the National Natural Science Foundation of China (Grant No. 11874247), the National Key Research and Development Program of China (Grant Nos. 2017YFA0304500 and 2017YFA0304203), PCSIRT, China (Grant No. IRT-17R70), and the Program of State Key Laboratory of Quantum Optics and Quantum Optics Devices, China (Grant No. KF201703).

Zhang Xiu-Rong, Li Wei-Dong^†

The current–phase relations for various barrier height V with η = 80000 and d = 0.05 = 20ξ₀. The curves in panels (b) and (c) show more details about type I and type II of multi-valued current–phase relations. Here, the current–phase relations for PW (SL) solutions are plotted in solid (dashed) lines. The red triangles have the same meaning as those in Fig. 3.