Microwave-induced resistance oscillations in tilted magnetic fields

Abstract

We have studied the effect of an in-plane magnetic field on microwave-induced resistance oscillations in a high mobility two-dimensional electron system. We have found that the oscillation amplitude decays exponentially with an in-plane component of the magnetic field $B_\parallel$. While these findings cannot be accounted for by existing theories, our analysis suggests that the decay can be explained by a $B_\parallel$-induced correction to the quantum scattering rate, which is quadratic in $B_\parallel$

Terahertz photovoltaic detection of cyclotron resonance in the regime of radiation-induced magnetoresistance oscillations

“…1,5,32 These R xx oscillations show a non-linear dependence on the microwave power, P , at modest P , 25,60 and a strong sensitivity to T . 1 Proposed mechanisms for such oscillations include radiation-assisted indirect inter-Landau-level scattering by phonons and impurities (the displacement model), 34,36,39,57 non-parabolicity effects in an ac-driven system (the non-parabolicity model), 38 the periodic motion of the electron orbit centers under irradiation (the radiation driven electron orbit model).…”

Comment on “Theory of microwave-induced zero-resistance states in two-dimensional electron systems” and on “Microwave-induced zero-resistance states and second-harmonic generation in an ultraclean two-dimensional electron gas”

“…In particular, it was demonstrated [33] that the suppression of the MIRO amplitude can be explained by a B -induced correction to the quan-…”

“…At f = 120 GHz, used in Ref. 31, such cyclotron resonance would occur at B ≈ 4.3 T. However, the suppression of the MIRO amplitude was observed at total B, which is at least one order of magnitude smaller [31][32][33].…”

“…Dependence on in-plane magnetic field − It is known that MIRO/MIZRS can be suppressed by an in-plane magnetic field B [31][32][33]. In particular, it was demonstrated [33] that the suppression of the MIRO amplitude can be explained by a B -induced correction to the quan-…”

“…Dependence on magnetic field − It is well established that the MIRO amplitude exhibits exponential dependence on the magnetic field, decaying as B −1 exp(−B 0 /B) [6,9,10,12,23,33,51], where B 0 is a sample-dependent constant. In contrast to microscopic MIRO theories [46], which link B 0 to the quantum scattering rate, B 0 = 2πm ⋆ /eτ q , Ref.…”