Microwave photoresistance of a high-mobility two-dimensional electron gas in a triangular antidot lattice

TL;DR

This study investigates microwave photoresistance in a high-mobility 2D electron gas with a triangular antidot lattice, revealing distinct microwave-induced phenomena and their independence from each other.

Contribution

It provides new insights into the behavior of microwave-induced resistance oscillations, magnetoplasmon resonance, and geometrical resonance in patterned 2D electron systems.

Findings

Observation of MIRO, MP resonance, and GR in the patterned 2DEG

Decoupling of MIRO, MP, and GR phenomena

Enhanced understanding of microwave effects in nanostructured 2D systems

Abstract

The microwave (MW) photoresistance has been measured on a high-mobility two-dimensional electron gas patterned with a shallow triangular antidot lattice, where both the MW-induced resistance oscillations (MIRO) and magnetoplasmon (MP) resonance are observed superposing on sharp commensurate geometrical resonance (GR). Analysis shows that the MIRO, MP, and GR are decoupled from each other in these experiments.