Results 41 to 50 of about 326,700 (334)

Photoswitchable Conductive Metal–Organic Frameworks

Advanced Functional Materials, EarlyView.
A conductive material where the conductivity can be modulated remotely by irradiation with light is presented. It is based on films of conductive metal–organic framework type Cu3(HHTP)2 with embedded photochromic molecules such as azobenzene, diarylethene, spiropyran, and hexaarylbiimidazole in the pores.
Yidong Liu, Mersad Mostaghimi, Abhinav Chandresh, Saibal Jana, Wolfgang Wenzel, Lars Heinke   +5 more
wiley   +1 more source

Mechanism of Change in The Emission and Optical Properties of W and Mo After Bombardment with Low-Energy Ions

East European Journal of Physics
The paper reports the results of study of composition, emission, and optical properties of polycrystalline W and Mo samples implanted with Ba+ ions and coated with submonolayer Ba atoms by applying Auger electron spectroscopy, secondary electron emission
D.А. Tashmukhamedova, B.E. Umirzakov, Y.S. Ergashov, F.Y. Khudaykulov, Kh.E. Abdiev   +4 more
doaj   +1 more source

Magnetotransport of dirty-limit van Hove singularity quasiparticles

Communications Physics, 2021
Strongly correlated materials can exhibit deviations from Fermi-liquid behavior partly due to anomalies in the density of states at the Fermi level, such as van Hove singularities.
Yang Xu, František Herman, Veronica Granata, Daniel Destraz, Lakshmi Das, Jakub Vonka, Simon Gerber, Jonathan Spring, Marta Gibert, Andreas Schilling, Xiaofu Zhang, Shiyan Li, Rosalba Fittipaldi, Mark H. Fischer, Antonio Vecchione, Johan Chang   +15 more
doaj   +1 more source

Switchable and Dual-Tunable Multilayered Terahertz Absorber Based on Patterned Graphene and Vanadium Dioxide

Micromachines, 2021
In this paper, a switchable and dual-tunable terahertz absorber based on patterned graphene and vanadium dioxide is proposed and analyzed. By controlling the Fermi level of graphene and the temperature of vanadium dioxide, the device’s function can be ...
Hongyao Liu, Panpan Wang, Jiali Wu, Xin Yan, Xueguang Yuan, Yangan Zhang, Xia Zhang   +6 more
doaj   +1 more source

Composite fermions in bands with N-fold rotational symmetry

, 2017
We study the effect of band anisotropy with discrete rotational symmetry $C_N$ (where $N\ge 2$) in the quantum Hall regime of two-dimensional electron systems. We focus on the composite Fermi liquid (CFL) at half filling of the lowest Landau level.
Bhatt, R. N., Geraedts, Scott D., Ippoliti, Matteo   +2 more
core   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

Graphene-enabled reconfigurable terahertz wavefront modulator based on complete Fermi level modulated phase

New Journal of Physics, 2020
Although great achievements have been obtained in metasurfaces so far, the functionalities of these devices are almost static. The dynamically adjustable devices are far less explored.
Xiongjun Shang, Liang Xu, Hui Yang, Hairong He, Qian He, Yu Huang, Lingling Wang   +6 more
doaj   +1 more source

Fermi Level Engineering for Large Permittivity in BaTiO₃-Based Multilayers

Surfaces, 2020
Multilayered doped BaTiO3 thin films have been fabricated by physical vapor deposition (PVD) on low-cost polycrystalline substrates with the aim to improve dielectric properties by controlling point charge defects at the interfaces.
Christopher Castro Chavarría, Sandrine Payan, Jean-Paul Salvetat, Mario Maglione, Andreas Klein   +4 more
doaj   +1 more source

Graphene-Assisted Electromagnetically Induced Transparency-like Terahertz Metabiosensor for Ultra-Sensitive Detection of Ovalbumin

Photonics, 2023
Terahertz (THz) metamaterial (MM) biosensors are a potential method of biomolecule detection. However, there have been few reports on the detection of trace proteins. In this study, we designed a novel THz biosensor consisting of graphene, polyimide (PI),
Ruochen Xu, Pibin Bing, Xin Yan, Haiyun Yao, Lanju Liang, Zhenhua Li, Ziqun Wang, Xiaofei Hu, Meng Wang, Jianquan Yao   +9 more
doaj   +1 more source

Pairing in ultracold Fermi gases in the lowest Landau level [PDF]

Physical Review A, 2009
We study a rapidly rotating gas of unpolarized spin-1/2 ultracold fermions in the two-dimensional regime when all atoms reside in the lowest Landau level. Due to the presence of the spin degree of freedom both s-wave and p-wave interactions are allowed at ultralow temperatures.
Moller, G., Jolicoeur, Th., Regnault, N.
openaire   +4 more sources