  Hybrid-Vlasov-Maxwell simulations of magnetized plasma turbulence including
non-linear electron-inertia effects in a generalized Ohm's law are presented.
When fluctuation energy is injected on scales sufficiently close to ion-kinetic
scales, the ions efficiently become de-magnetized and electron-scale current
sheets largely dominate the distribution of the emerging current structures, in
contrast to the usual picture, where a full hierarchy of structure sizes is
generally observed. These current sheets are shown to be the sites of
electron-only reconnection (e-rec), in which the usual electron exhausts are
unaccompanied by ion outflows and which are in qualitative agreement with those
recently observed by MMS in the Earth's turbulent magnetosheath, downstream of
the bow shock. Some features of the e-rec phenomenology are shown to be
consistent with an electron magnetohydrodynamic description. Simulations
suggest that this regime of collisionless reconnection may be found in
turbulent systems where plasma processes, such as micro-instabilities and/or
shocks, overpower the more customary turbulent cascade by directly injecting
energy close to the ion-kinetic scales.
