Results 51 to 60 of about 3,336 (157)

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

Displacive In‐Plane Ferroelectricity with Domain‐Specific Curie Temperature in Van der Waals Semiconductors

Advanced Science, EarlyView.
Temperature‐dependent electron diffraction on tin monochalcogenides demonstrates a gradual displacive transformation between ferroelectric and paraelectric phases with significant variability in lattice constants and Curie temperature (TC). Periodic variations exist even between domains in individual crystals, implying a domain‐specific Curie ...
Peter Sutter, Eli Sutter
wiley   +1 more source

Gate-defined Kondo lattices with valley-helical quantum dot arrays

SciPost Physics
Kondo physics and heavy-fermion behavior has been predicted and observed in moiré materials. The electric tunability of moiré materials allows an in-situ study of Kondo lattices' phase diagrams, which is not possible with their intermetallic counterparts.
Antonio L. R. Manesco
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

Giant oscillations in a triangular network of one-dimensional states in marginally twisted graphene

, 2019
The electronic properties of graphene superlattices have attracted intense interest that was further stimulated by the recent observation of novel many-body states at "magic" angles in twisted bilayer graphene (BLG).
Bandurin, D. A., Berdyugin, A. I., Edgar, J. H., Fal'ko, V. I., Geim, A. K., Grigorieva, I. V., Guinea, F., Kim, M., Kuang, W., Kumar, R. Krishna, Kumaravadivel, P., Liu, S., Morozov, S. V., Tsim, B., Xu, S. G.   +14 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

Moiré-engineered light-matter interactions in MoS2/WSe2 heterobilayers at room temperature

Nature Communications
Moiré superlattices in van der Waals heterostructures represent a highly tunable quantum system, attracting substantial interest in both many-body physics and device applications. However, the influence of the moiré potential on light-matter interactions
Qiaoling Lin, Hanlin Fang, Alexei Kalaboukhov, Yuanda Liu, Yi Zhang, Moritz Fischer, Juntao Li, Joakim Hagel, Samuel Brem, Ermin Malic, Nicolas Stenger, Zhipei Sun, Martijn Wubs, Sanshui Xiao   +13 more
doaj   +1 more source

Nearly flat Chern bands in moiré superlattices [PDF]

, 2018
Topology and electron interactions are two central themes in modern condensed matter physics. Here, we propose graphene-based systems where both the band topology and interaction effects can be simply controlled with electric fields. We study a number of
Cao, Yuan, Jarillo-Herrero, Pablo, Mao, Dan, Todadri, Senthil, Zhang, Yahui   +4 more
core   +2 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

Chemically Tailored Semiconductor Moiré Superlattices of Janus Heterobilayers

Small Structures
Janus monolayers of transition metal dichalcogenides (TMDCs) are promising building blocks for moiré superlattices because of their built‐in electric field and clean fabrication process.
Wenjin Zhang, Zheng Liu, Hiroshi Nakajo, Soma Aoki, Haonan Wang, Yanlin Wang, Yanlin Gao, Mina Maruyama, Takuto Kawakami, Yasuyuki Makino, Masahiko Kaneda, Tongmin Chen, Kohei Aso, Tomoya Ogawa, Takahiko Endo, Yusuke Nakanishi, Kenji Watanabe, Takashi Taniguchi, Yoshifumi Oshima, Yukiko Yamada‐Takamura, Mikito Koshino, Susumu Okada, Kazunari Matsuda, Toshiaki Kato, Yasumitsu Miyata   +24 more
doaj   +1 more source