Results 111 to 120 of about 5,255,189 (272)

2D materials and van der Waals heterostructures

, 2016
The physics of two-dimensional (2D) materials and heterostructures based on such crystals has been developing extremely fast. With new 2D materials, truly 2D physics has started to appear (e.g.
Carvalho, A., Mishchenko, A., Neto, A. H. Castro, Novoselov, K. S.   +3 more
core   +1 more source

Atomically Resolved Electron Reflectivity at a Metal/Semiconductor Interface

Advanced Science, EarlyView.
An atomically flat interface is achieved in the incoherent Al/Ge heterostructure using molecular beam epitaxy (MBE). Scanning tunneling microscopy (STM) reveals a laterally periodic modulation of electron reflectivity with atomic resolution at the commensurate Al/Ge interfacial lattice, originating from the local electronic states.
Ding‐Ming Huang, Jian‐Huan Wang, Jie‐Yin Zhang, Yuan Yao, Hongqi Xu, Jian‐Jun Zhang   +5 more
wiley   +1 more source

Fractional Chern mosaic in supermoiré graphene

Physical Review Research
We propose the realization of a fractional Chern mosaic: a state characterized by a spatially varying topological order. This arises in trilayer graphene with small sequential twist angles, where a large supermoiré lattice emerges alongside conventional ...
Yves H. Kwan, Tixuan Tan, Trithep Devakul   +2 more
doaj   +1 more source

What are the possible moiré patterns of graphene on hexagonally packed surfaces? Universal solution for hexagonal coincidence lattices, derived by a geometric construction

New Journal of Physics, 2014
We present a systematic investigation of two coinciding lattices and their spatial beating frequencies that lead to the formation of moiré patterns. A mathematical model was developed and applied for the case of a hexagonally arranged adsorbate on a ...
Patrick Zeller, Sebastian Günther
doaj   +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

Hierarchical Strain‐Modified Medium‐Entropy Carbide Ceramics Exhibit Exceptional Ablation Resistance up to 2400°C

Advanced Science, EarlyView.
A novel strategy is developed by doping reduced graphene oxide (rGO) into a (HfZrTi)C medium‐entropy ceramic. This induces a hierarchical strain modification mechanism, synergistically inhibiting crack propagation at the microscale and dissipating stress at the mesoscale.
Junyi Xiao, Pengfei He, Lin Xue, Shujun Hu, Liliang Shao, Chuan Sun, Yunyun Ge, Jiangbo Cheng, Xiubing Liang   +8 more
wiley   +1 more source

Interplay Between Structure and Interfacial Interactions in Fe‐Gd Synthetic Ferrimagnets

Advanced Electronic Materials, EarlyView.
Synthetic ferrimagnets with nearly identical Gd–Fe compositions but different architectures and crystallinity were investigated by element‐resolved microscopy, structural analysis and atomistic spin simulations. The results show that Curie temperature and domain evolution are governed primarily by structural order and interface quality, demonstrating ...
Álvaro González‐García, Alejandro Álvarez‐Chico, Jairo Obando‐Guevara, Silvia Gallego, Unai Atxitia, Iulia Cojocariu, Matteo Jugovac, Tevfik Onur Menteş, Andrea Locatelli, Arantzazu Mascaraque, Miguel Ángel González‐Barrio   +10 more
wiley   +1 more source

A CRDNet‐Based Watermarking Algorithm for Fused Visible–Infrared Images

Advanced Intelligent Systems, EarlyView.
CRDnet includes encoders and decoders based on residual and dense structures, a fusion network robust to 12 visible and infrared image fusion algorithms, and predictors for predicting watermarked infrared images. The encoder and decoder incorporate preprocessing steps, attention mechanisms, and activation functions suitable for infrared images.
Yu Bai, Li Li, Shanqing Zhang, Ting Luo, Chin‐Chen Chang   +4 more
wiley   +1 more source

Stepwise Optimization of Thermoelectric Performance in Cu3SbSe4‐Based Compounds via Alloying and Hierarchical Structuring

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Under the stepwise optimization strategy, (Sn, Te) co‐alloying functions as the primary initiative to enhance the power factor (PF), while the subsequent incorporation of AgCuTe operates as a synergistic maneuver to suppress lattice thermal conductivity (κlat), thereby concomitantly boosting the dimensionless figure of merit (ZT).
Wenying Wang, Xinglong Wang, Lin Bo, Wenying Zhou, Changcun Li, Zheng Zhang, Futian Liu, Degang Zhao   +7 more
wiley   +1 more source

Spatial segregation of substitutional B atoms in graphene patterned by the moiré superlattice on Ir(111) [PDF]

, 2022
Marc G. Cuxart, Daniele Perilli, Sena Tömekce, Joel Deyerling, Felix Haag, Matthias Muntwiler, Francesco Allegretti, Cristiana Di Valentin, Willi Auwärter   +8 more
openalex   +1 more source