Current sheets a few ion inertial lengths (d_i) wide generated by an MHD-scale KH vortex in a 2.5D Hall–MHD simulation at the low-corona parameters of Table 2 (model and parameters in Appendix B). Lengths are in units of L₀ = 2 d_i and times in units of L₀/V_A0; the horizontal axis (x) is the direction normal (N) to the flux channel and the vertical axis (y) the flow direction (−M). (a) Initial state (t = 10): flow speed v_y (color) with velocity vectors; the channel at rest between x = ± 25 is sheared on both flanks by exterior flow at 0.33 V_A0 (the color scale saturates at 0.21 V_A0), and the in-plane field component reverses at each flank over a half-width of 16 d_i, so the initial state contains no kinetic-scale structure. (b) Relative electron–ion flow ∣v_e − v_i∣ at t = 365, normalized to the Alfvén speed of the far-field in-plane field component, with in-plane field lines. The decoupling is confined to the thin braid sheet between the two vortices and to the flank sheet, where it exceeds 0.3 (the color scale saturates); the vortex interiors show none. (c) Parallel electric field E_∥ = η J · B/∣B∣, normalized to b_∥V_A,in of the far field, with in-plane field lines and in-plane magnetic-field vectors; with uniform resistivity it follows the current sheets. (d) j_z along a cut across the braid sheet at y = 1.5: the FWHM (dashed lines) is 6.3 d_i along the cut and about 4 d_i perpendicular to the sheet, which is inclined by 39^∘ to the cut, while the core of the trough, where the current density is highest, is only 1–2 d_i wide. The short bar marks the local ion inertial length; the weaker layers of opposite polarity on either side are 9 d_i away. (e) Current density j_z at t = 365: the braid and flank sheets, with weaker layers of alternating polarity wound into both vortices. (f) Plasma density at t = 365: the channel plasma (0.9 n₀, orange) wound into both vortices by the exterior plasma (1.1 n₀, white).