Landau Institute for theoretical physics

Department of quantum mesoscopics

Upcoming seminars
Department of quantum mesoscopics: seminar, Friday, October 16, 2026, ITF, 3:00 pm

V. Enaldiev (MFTI)

Rezonansnoe pogloshchenie i lineinyi fotogal'vanicheskii effekt v van-der-vaal'sovykh geterostrukturakh s interfeisnymi segnetoelektrikami

Obrazovanie segnetoelektricheskikh domenov v razorientirovannykh bisloyakh dvumernykh materialov, takikh kak nitrid bora ili poluprovodnikovykh dikhal'kogenidov perekhodnykh metallov, mozhno ispol'zovat' dlya sozdaniya elektrostaticheskogo potentsiala sverkhreshetki muara v sosednikh sloyakh. V rabote izuchen spektr i optoelektronnye svoistva mini-zon, obrazovannykh bezmassovymi dirakovskimi fermionami v grafene pod deistviem elektrostaticheskogo potentsiala segnetoelektricheskoi sverkhreshetki muara. Pokazano, chto vozniknovenie singulyarnostei Van Khova v plotnosti sostoyanii na krayakh mini-zon modifitsiruet i opticheskii otklik struktury, privodya k rezonansnomu pogloshcheniyu i lineinomu fotovol'taicheskomu effektu. Poslednii obuslovlen isklyuchitel'no fototokom smeshcheniya, voznikayushchim tol'ko pri uchete virtual'nykh opticheskikh perekhodov, togda kak vozniknovenie inzhektsionnogo fototoka zapreshcheno simmetriei sistemy.

V. V. Enaldiev, Z. Z. Alisultanov "Resonant absorption and linear photovoltaic effect in ferroelectric moiré heterostructures" arXiv: 2602.06656.

[Zoom]