Different theories have been proposed to explain these striking effects [3–9] but the physical origin is still being questioned. On the other hand, a great effort has been made, specially from the experimental side, growing better samples, adding new features and different probes to the basic experimental setup, etc. [10–16]. One of the most interesting CX-5461 solubility dmso setups, carried out recently, consists in using samples

with two or three occupied LGX818 cost subbands [15]. These samples are either based in a double-quantum-well structure or just one single but wide quantum well. The main difference in the longitudinal magnetoresistance (R x x ) of a two-subband sample is the presence of magneto-intersubband oscillations (MISO) [17, 18]. These oscillations occur due to periodic modulation of the probability of transitions through elastic scattering between Landau levels of different subbands [19–22]. Under MW irradiation, HSP inhibitor the first experimental results [16] of R x x showed the interference of MISO and MIRO without reaching the ZRS regime. Later on, further experiments realized at higher MW intensities and mobility samples showed that the MW-response evolves into zero-resistance states for the first time in a two-occupied

subband sample [15]. In the same experiment [15], it was also observed that there is a peculiar R x x profile with different features regarding the one-subband case [1, 2] affecting only valleys and peaks of MIRO’s in a surprising regular way, deserving special attention. In this letter, we theoretically study magnetoresistance of a Hall bar being illuminated with MW radiation when two electronic subbands participate in the transport. We apply the theory developed by the authors, the MW-driven electron orbits model[3, 23, 24], which we extend to a two-subband scenario. According to this theory [3], when a Hall bar is illuminated, the electron orbit centers of the Landau states perform a classical trajectory consisting in a harmonic motion along the direction of the current (see

ref. [3] Cyclin-dependent kinase 3 for a detailed explanation). In a double subband scenario, the situation gets more complicated but with a richer physics. On the one hand, due to the presence of MW, we have two 2DES (two subbands) moving harmonically at the MW frequency. On the other hand, we have two possible scattering processes with charged impurities: intra- and inter-subbands. The competition between intra- and inter-subband scattering events under the presence of radiation alters significantly the transport properties of the sample. This is reflected in the R x x profile through a strong and peculiar interference effect. As in experiments, our calculated results recover the presence of new features regularly spaced through the whole MIRO’s profile, mainly two shoulders at minima and narrower peaks. Methods The MW driven electron orbits model, was developed to explain the R x x response of an irradiated 2DEG at low B.