2011/12/15 by A. T. Hatke, M. A. Zudov, L. N. Pfeiffer +1
Engineering · Physics and Astronomy · #Quantum and electron transport phenomena #Semiconductor Quantum Structures and Devices #Semiconductor materials and devices #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.84.241304
published as Physical Review B - Rapid Communications 84, 241304(R) (2011)
openalex publication_date 2011/12/15 · arxiv created 2011/12/20 · arxiv updated 2011/12/21 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Theories of microwave-induced resistance oscillations in high-mobility two-dimensional electron gas predict that, with decreasing oscillation order n or with increasing frequency \ensuremathω, the photoresistance maxima should appear closer to the cyclotron resonance harmonics due to increased Landau-level separation. In this experimental study we demonstrate that, while for a given \ensuremathω the peaks do move toward the harmonics with decreasing n, there is no corresponding movement with increasing \ensuremathω for a given n. These findings show that the positions of the photoresistance maxima cannot be directly linked to the Landau-level separation, challenging our current understanding of the phenomenon.