Fig. 4.

Dependence of the real part of the surface impedance Z on frequency ω in the low-frequency normal and the AIN regimes, obtained from Eqs. 53, 51, and 54 in the cases of no magnetic field (α  =  0) and a nonzero magnetic field ($\alpha =0.1$). The dashed line is plotted on the basis of the impedance of the low-frequency normal regime as found in Table 1, and it is the result that would be measured in the absence of the nonlocal behavior. The material parameters are $v=1.4\times {10}^5$ m/s, ${\mathrm{ϵ}}_{\text{F}}=20$ meV, ${\mathrm{\Gamma }}_{\text{mr}}={10}^9$ Hz, and ${\mathrm{\Gamma }}_{\text{inter}}={10}^7$ Hz. The transition to the AIN regime takes place around $\omega ={10}^5$ Hz. We see that changing the external magnetic field leads to a noticeable change of the surface impedance, especially shortly before the onset of the AIN regime, and moreover in this regime the scaling with frequency changes with respect to the no-field result.