In the strong-repulsion window 2/9 < g < 1/2 with degenerate tunneling phases, a helical-edge Y-junction flows to an intermediate RG fixed point whose spin conductance rises smoothly from zero to 4/3 e^2/h.
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Strongly Correlated Transport in Topological Y-Junction Devices
In the strong-repulsion window 2/9 < g < 1/2 with degenerate tunneling phases, a helical-edge Y-junction flows to an intermediate RG fixed point whose spin conductance rises smoothly from zero to 4/3 e^2/h.