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The electronic states of a mesoscopic ring are assessed in the presence ofRashba Spin Orbit coupling and a $U(1)$ gauge field. Spin symmetric coupling toan ideal lead is implemented following B\"uttiker's voltage probe. The exactdensity of states is derived using the reservoir uncoupled eigenstates as basisfunctions mixed by the reservoir coupling. The decay time of uncoupled electroneigenstates is derived by fitting the broadening profiles. The spin and chargepersistent currents are computed in the presence of the SO interaction and thereservoir coupling for two distinct scenarios of the electron filling fraction.The degradation of the persistent currents depends uniformly on the reservoircoupling but nonuniformly in temperature, the latter due to the fact thatcurrents emerge from different depths of the Fermi sea, and thus for someregimes of flux, they are provided with a protective gap. Such flux regimes canbe tailored by the SO coupling for both charge and spin currents.

Charge and spin polarized currents in mesoscopic rings with Rashba spin-orbit interactions coupled to an electron reservoir