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Today's Topics:
1. Friday 01.03.2024 (Serge Krashakov)
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Message: 1
Date: Tue, 27 Feb 2024 15:30:49 +0300
From: Serge Krashakov <sakr@itp.ac.ru>
To: staff@itp.ac.ru, students@itp.ac.ru, seminars@itp.ac.ru
Subject: [Landau ITP Seminars] Friday 01.03.2024
Message-ID: <f9ad9964-d5e1-4227-a821-a7e4c29aa162@itp.ac.ru>
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Уважаемые коллеги!
В пятницу 1 марта в 11:30 состоится коллоквиум, на котором будет
заслушан доклад:
Владимир Енальдиев (Абрикосовский центр теоретической физики, МФТИ)
*Impact of lattice reconstruction on electronic properties of twistronic
heterostructures hosting long-period moiré superlattice*
In the talk I describe a multiscale approach to lattice relaxation of
long-period moiré superlattice in marginally twisted bilayers [1,2].
Based on that I introduce a concept of interface ferroelectricity
emerging as an array of polar domains with alternating out-of-plane
polarization in twistronic heterostructures consisting of 2D material's
layers lacking of inversion symmetry [3]. For the structures based on
twisted transition metal dichaIcogenides bilayers I present a domain
wall network model which predicts a universal scaling of polar domain
structure in external out-of-plane electric field [4]. Second part of my
talk will be devoted to modelling of graphene-based twistronic
heterostructures using hybrid kp-tight-binding Hamiltonians [5]. In
particular, I will describe electronic properties of AB/BA domain wall
in bilayer graphene [6] and show that single-element structures such as
few-layer rhombohedral graphite stacks with twin boundary plane can host
weak ferroelectricity [7].
[1] V.V. Enaldiev, V. Zolyomi, C. Yelgel et al, Phys. Rev. Letters 124,
206101 (2020).
[2] A. Weston, Y. Zou, V. Enaldiev et al, Nature Nanotechnology 15, 592
(2020).
[3] A. Weston, E.G. Castanon, V. Enaldiev et al, Nature Nanotechnology
17, 390 (2022).
[4] V.V. Enaldiev, F. Fereira, V.I. Fal'ko, Nano Letters 22, 1534 (2022).
[5] A. Garcia-Ruiz, H. Deng, V. Enaldiev, V. Falko, Phys Rev B 104,
085402 (2021).
[6] V. Enaldiev, C. Moulsdale, A.K. Geim, V.I. Falko, arXiv:2307.12848.
[7] A.Garcia-Ruiz, V. Enaldiev, A. McEllstrim, V. Falko, Nano Lett. 23,
4120 (2023).
ID и пароль онлайн-трансляций в Zoom те же, что и для предыдущих
трансляций семинаров и докладов на Ученом совете:
https://zoom.us/j/96899364518?pwd=MzBsR2lYT0lYL2x2b1oyNU9LeWlWUT09
Meeting ID: 968 9936 4518
Пароль: 250319
При числе желающих не менее 5 будет организован автобус.
Для записи на автобус из Москвы в Черноголовку необходимо до 18:00
четверга отправить письмо на адрес электронной почты bus@itp.ac.ru
После этого записавшимся до 20:00 поступит подтверждение об отправке или
неотправке автобуса в зависимости от числа записавшихся.
Запись на обратный автобус - на Ученом совете.
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