Electrically tunable detector of THz-frequency signals based on an antiferromagnet

摘要: A concept of an electrically tunable resonance detector THz-frequency signals based on antiferromagnetic/heavy metal (AFM/HM) hetero-structure is proposed. The conversion a input signal into DC voltage done using the inverse spin Hall effect in bilayer. An additional bias current HM layer can be used to vary effective anisotropy AFM, and, therefore, tune AFMR frequency. proposed AFM/HM works as resonance-type quadratic which tuned by range at least 10 percent frequency and our estimations show that sensitivity this could comparable modern detectors Schottky, Gunn or graphene-based diodes.