Results 51 to 60 of about 2,902 (157)

Visualizing moiré ferroelectricity via plasmons and nano-photocurrent in graphene/twisted-WSe2 structures

Nature Communications, 2023
Ferroelectricity, a spontaneous and reversible electric polarization, is found in certain classes of van der Waals (vdW) materials. The discovery of ferroelectricity in twisted vdW layers provides new opportunities to engineer spatially dependent ...
Shuai Zhang, Yang Liu, Zhiyuan Sun, Xinzhong Chen, Baichang Li, S. L. Moore, Song Liu, Zhiying Wang, S. E. Rossi, Ran Jing, Jordan Fonseca, Birui Yang, Yinming Shao, Chun-Ying Huang, Taketo Handa, Lin Xiong, Matthew Fu, Tsai-Chun Pan, Dorri Halbertal, Xinyi Xu, Wenjun Zheng, P. J. Schuck, A. N. Pasupathy, C. R. Dean, Xiaoyang Zhu, David H. Cobden, Xiaodong Xu, Mengkun Liu, M. M. Fogler, James C. Hone, D. N. Basov   +30 more
doaj   +1 more source

Progress in Strain Engineering of 2D‐Integrated Heterostructures for Ultrasensitive Sensors

Advanced Science, EarlyView.
 . ABSTRACT Two‐dimensional (2D) integrated heterostructures have emerged as a cornerstone in the advancement of next‐generation sensor technologies. These heterostructures, which combine materials with different dimensionalities, have led to significant breakthroughs in sensing performance and device integration.
That Buu Ton, Tuan Sang Tran, Duc Khanh Tran, Van Thanh Dau, Dzung Viet Dao   +4 more
wiley   +1 more source

Topological Valley Currents in Bilayer Graphene/Hexagonal Boron Nitride Superlattices

, 2019
Graphene superlattices have recently been attracting growing interest as an emergent class of quantum metamaterials. In this paper, we report the observation of nonlocal transport in bilayer graphene (BLG) superlattices encapsulated between two hexagonal
Endo, Kosuke, Iwasaki, Takuya, Komatsu, Katsuyoshi, Morita, Yoshifumi, Moriyama, Satoshi, Noguchi, Yutaka, Taniguchi, Takashi, Tsuya, Daiju, Wakayama, Yutaka, Watanabe, Eiichiro, Watanabe, Kenji   +10 more
core   +1 more source

Topological Materials and Related Applications

Advanced Electronic Materials, EarlyView.
This review covers topological materials—including topological insulators, quantum valley Hall and quantum spin Hall insulators, and topological Weyl and Dirac semimetals—as well as their most recent advancements in fields such as spintronics, electronics, photonics, thermoelectrics, and catalysis.
Carlo Grazianetti, Roberto Mantovan, Emanuele Longo, Harold J. W. Zandvliet, Pantelis Bampoulis, Yu Pan, Fan Li, Xia Wang, Payton Downey, Alessandro Molle   +9 more
wiley   +1 more source

Interplay of valley, layer and band topology towards interacting quantum phases in moiré bilayer graphene

Nature Communications
In Bernal-stacked bilayer graphene (BBG), the Landau levels give rise to an intimate connection between valley and layer degrees of freedom. Adding a moiré superlattice potential enriches the BBG physics with the formation of topological minibands ...
Yungi Jeong, Hangyeol Park, Taeho Kim, Kenji Watanabe, Takashi Taniguchi, Jeil Jung, Joonho Jang   +6 more
doaj   +1 more source

Tunable Correlated Chern Insulator and Ferromagnetism in Trilayer Graphene/Boron Nitride Moir\'e Superlattice

, 2019
Studies on two-dimensional electron systems in a strong magnetic field first revealed the quantum Hall (QH) effect, a topological state of matter featuring a finite Chern number (C) and chiral edge states.
Chen, Guorui, Fox, Eli J., Goldhaber-Gordon, David, Jiang, Lili, Li, Hongyuan, Lyu, Bosai, Senthil, T., Sharpe, Aaron L., Shi, Zhiwen, Taniguchi, Takashi, Wang, Feng, Wang, Shaoxin, Watanabe, Kenji, Zhang, Ya-Hui, Zhang, Yuanbo   +14 more
core   +1 more source

High-order fractal states in graphene superlattices [PDF]

, 2018
Graphene superlattices were shown to exhibit high-temperature quantum oscillations due to periodic emergence of delocalized Bloch states in high magnetic fields such that unit fractions of the flux quantum pierce a superlattice unit cell.
A. K. Geim, A. Mishchenko, Beenakker, Chen, G. H. Auton, Hofstadter, Ju, L. A. Ponomarenko, L. Eaves, Landau, Moon, R. Krishna Kumar, S. Pezzini, Schubnikow, Streda, U. Zeitler, V. I. Fal’ko, Wallbank, Wang, Wannier, Wannier, X. Chen   +21 more
core   +4 more sources

Electric Field‐Induced Hole‐ and Electron‐Type Flat Bands in Twisted Double Bilayer Graphene

Advanced Electronic Materials, EarlyView.
The electronic structure of twisted double bilayer graphene is visualized using angle‐resolved photoemission spectroscopy with micrometer spatial resolution at twists of 3.1∘$^\circ$ and 6.0∘$^\circ$ as a function of gate voltage. Tunable hybridization effects and flat band formation occurs between valence and conduction band states due to a finite ...
Zhihao Jiang, Dongkyu Lee, Alfred J. H. Jones, Youngju Park, Paulina Majchrzak, Kimberly Hsieh, Chakradhar Sahoo, Thomas S. Nielsen, Kenji Watanabe, Takashi Taniguchi, Philip Hofmann, Yong P. Chen, Jeil Jung, Søren Ulstrup   +13 more
wiley   +1 more source

In-plane orientation effects on the electronic structure, stability and Raman scattering of monolayer graphene on Ir(111)

, 2010
We employ angle-resolved photoemission spectroscopy (ARPES) to investigate the electronic structures of two rotational variants of epitaxial, single-layer graphene on Ir(111).
Bostwick, Aaron, Gabaly, Farid El, McCarty, Kevin F., Moreschini, Luca, Nie, Shu, Rotenberg, Eli, Starodub, Elena   +6 more
core   +1 more source

Artificial Intelligence for Multiscale Modeling in Solid‐State Physics and Chemistry: A Comprehensive Review

Advanced Intelligent Systems, EarlyView.
This review explores the transformative impact of artificial intelligence on multiscale modeling in materials research. It highlights advancements such as machine learning force fields and graph neural networks, which enhance predictive capabilities while reducing computational costs in various applications.
Artem Maevskiy, Vitalii Kapitan, Andrey Ustyuzhanin   +2 more
wiley   +1 more source