Observation of Γ-Valley Moiré Bands and Emergent Hexagonal Lattice in Twisted Transition Metal Dichalcogenides

Autor: Ding Pei, Binbin Wang, Zishu Zhou, Zhihai He, Liheng An, Shanmei He, Cheng Chen, Yiwei Li, Liyang Wei, Aiji Liang, Jose Avila, Pavel Dudin, Viktor Kandyba, Alessio Giampietri, Mattia Cattelan, Alexei Barinov, Zhongkai Liu, Jianpeng Liu, Hongming Weng, Ning Wang, Jiamin Xue, Yulin Chen

Publikováno v: Physical Review X, Vol 12, Iss 2, p 021065 (2022)

Twisted van der Waals heterostructures have recently been proposed as a condensed-matter platform for realizing controllable quantum models due to the low-energy moiré bands with specific charge distributions moiré superlattices. Here, combining an

Externí odkaz: https://doaj.org/article/d62515febf7a46ce934bc3cd3f7bcf38

Evidence for a higher-order topological insulator in a three-dimensional material built from van der Waals stacking of bismuth-halide chains

Autor: Daehun Lee, Keji Lai, Hiroaki Tanaka, Alexei Barinov, Zhanzhi Jiang, Motoaki Hirayama, Takao Sasagawa, Cédric Bareille, Cephise Cacho, Masayuki Ochi, Chun Lin, Ayumi Harasawa, Alessio Giampietri, Kenta Kuroda, Shunsuke Sakuragi, Masaru Kobayashi, Takanari Takahashi, Peng Zhang, Z. Xu, Viktor Kandyba, Ryotaro Arita, Donghui Lu, Ryo Noguchi, Timur K. Kim, Tetsuroh Shirasawa, Shik Shin, Kifu Kurokawa, Takeshi Kondo, So Kunisada, Koichiro Yaji, Makoto Hashimoto

Publikováno v: Nature Materials. 20:473-479

The van der Waals (vdW) materials with low dimensions have been extensively studied as a platform to generate exotic quantum properties. Advancing this view, a great deal of attention is currently paid to topological quantum materials with vdW struct

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9610a4dc20c46572294a25b6f51c449a
https://doi.org/10.1038/s41563-020-00871-7

Moiré Superlattice Effects and Band Structure Evolution in Near-30-Degree Twisted Bilayer Graphene

Autor: Matthew J. Hamer, Alessio Giampietri, Viktor Kandyba, Francesca Genuzio, Tevfik O. Menteş, Andrea Locatelli, Roman V. Gorbachev, Alexei Barinov, Marcin Mucha-Kruczyński

Publikováno v: Hamer, M J, Giampietri, A, Kandyba, V, Genuzio, F, Menteş, T O, Locatelli, A, Gorbachev, R V, Barinov, A & Mucha-Kruczynski, M 2022, ' Moiré Superlattice Effects and Band Structure Evolution in Near-30-Degree Twisted Bilayer Graphene ', ACS Nano, vol. 16, no. 2, pp. 1954-1962 . https://doi.org/10.1021/acsnano.1c06439
Hamer, M J, Giampietri, A, Kandyba, V, Genuzio, F, Menteş, T O, Locatelli, A, Gorbachev, R V, Barinov, A & Mucha-kruczyński, M 2022, ' Moiré Superlattice Effects and Band Structure Evolution in Near-30-Degree Twisted Bilayer Graphene ', ACS Nano . https://doi.org/10.1021/acsnano.1c06439

In stacks of two-dimensional crystals, mismatch of their lattice constants and misalignment of crystallographic axes lead to formation of moir\'{e} patterns. We show that moir\'{e} superlattice effects persist in twisted bilayer graphene (tBLG) with

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2177e9b6711f4fa641b1f348d7dca9dd
https://pubmed.ncbi.nlm.nih.gov/35073479

A weak topological insulator state in quasi-one-dimensional bismuth iodide

Autor: Koichiro Yaji, Takeshi Kondo, Matthew Watson, Takao Sasagawa, Masayuki Ochi, Ayumi Harasawa, Alessio Giampietri, Kenta Kuroda, Viktor Kandyba, M. Nakayama, Moritz Hoesch, Ryo Noguchi, Takanari Takahashi, Shik Shin, Hideaki Iwasawa, Alexei Barinov, Cédric Bareille, Timur K. Kim, Tetsuroh Shirasawa, Ryotaro Arita, Pavel Dudin, M. Sakano

Publikováno v: Nature. 566:518-522

The major breakthroughs in understanding of topological materials over the past decade were all triggered by the discovery of the Z2-type topological insulator-a type of material that is insulating in its interior but allows electron flow on its surf

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e6b18f7323ee3e537625c80dd85a7b37
https://doi.org/10.1038/s41586-019-0927-7

Ghost anti-crossings caused by interlayer umklapp hybridization of bands in 2D heterostructures

Autor: Johanna Zultak, Cuauhtémoc Salazar, Roman V. Gorbachev, Viktor Zólyomi, Alexei Barinov, Samuel Magorrian, Viktor Kandyba, Francesca Genuzio, Nicholas D. M. Hine, Matthew J. Hamer, Neil R. Wilson, Natalie C. Teutsch, Alessio Giampietri, Andrea Locatelli, Vladimir I. Fal'ko, Abigail J. Graham

Publikováno v: 2D Materials

In two-dimensional heterostructures, crystalline atomic layers with differing lattice parameters can stack directly one on another. The resultant close proximity of atomic lattices with differing periodicity can lead to new phenomena. For umklapp pro

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f5c07082a6a3a8d1e7790d7334f99a7e