Results 81 to 90 of about 309,890 (334)

Weakly correlated electrons on a square lattice: a renormalization group theory

, 1997
We study the weakly interacting Hubbard model on the square lattice using a one-loop renormalization group approach. The transition temperature T_c between the metallic and (nearly) ordered states is found.
Bedell K. S. . (Editors), D Zanchi, Emery V. J., Ginsberg D. M. (Editor), H. J Schulz, Ma S. K., Schulz H. J., Vistulo De Abreu F., Zanchi D.   +8 more
core   +2 more sources

Complemented lattice-ordered groups

Indagationes Mathematicae, 1990
A lattice-ordered group \(G\) is complemented if for each \(x\in G\) there is a \(y\in G\) so that \(| x|\wedge| y|=0\) and \(| x|\vee| y|\) is a unit; \(\text{Spec}(G)\) and \(\text{Min}(G)\) denote the spaces of all minimal, resp. all prime convex \(l\)-subgroups of \(G\) with some natural topology.
Conrad, Paul, Martinez, Jorge
openaire   +2 more sources

Characteristic subgroups of lattice-ordered groups [PDF]

Transactions of the American Mathematical Society, 1971
Characteristic subgroups of anll-group are those convexll-subgroups that are fixed by eachll-automorphism. Certain sublattices of the lattice of all convexll-subgroups determine characteristic subgroups which we call socles. Various socles of anll-group are constructed and this construction leads to some structure theorems.
Byrd, Richard D., Conrad, Paul, Lloyd, Justin T.   +2 more
openaire   +2 more sources

Unlocking Ultra‐Long Cycle Stability of Li Metal Electrode by Separators Modified by Porous Red Phosphorus Nanosheets

Advanced Functional Materials, EarlyView.
Coating the standard polypropylene separator with a porous red phosphorous nanosheet greatly improves cycling performance in Li electrode cells. The phosphorus‐based surface chemistry deactivates electrolyte solvent decomposition and enhances the cleavage of F‐containing salt, resulting in an inorganic‐dominated electrolyte interphase (SEI) composition
Jiangpeng Wang, Mingzi Sun, Feng Lang, Zhijun Cai, Xitao Hu, Yao Gao, Chao Lin, Xueqiang Zhang, Bolong Huang, Quan Li   +9 more
wiley   +1 more source

Chiral Spin-Density Wave, Spin-Charge-Chern Liquid, and d+id Superconductivity in 1/4-Doped Correlated Electronic Systems on the Honeycomb Lattice

Physical Review X, 2014
Recently, two interesting candidate quantum phases—the chiral spin-density wave state featuring anomalous quantum Hall effect and the d+id superconductor—were proposed for the Hubbard model on the honeycomb lattice at 1/4 doping.
Shenghan Jiang, Andrej Mesaros, Ying Ran
doaj   +1 more source

Phase transition and critical properties of spin-orbital interacting systems

, 2007
Phase transition and critical properties of Ising-like spin-orbital interacting systems in 2-dimensional triangular lattice are investigated. We first show that the ground state of the system is a composite spin-orbital ferro-ordered phase. Though Landau
Baxter, Bethe, Chen, Choi, Choi, Dong-Meng Chen, Hsu, Huai-Bao Tang, Keimer, Khomskii, Kugel, Kugel, Li, Liang-Jian Zou, Murakami, Niemeijer, Niemeijer, Nienhuis, Oles, Paul, Pen, Rogiers, Saitoh, Schofield, Senthil, Sudb, Tokura, Ulrich, Xiang-Fei Wei, Zhang   +29 more
core   +1 more source

Cu‐Based MOF/TiO2 Composite Nanomaterials for Photocatalytic Hydrogen Generation and the Role of Copper

Advanced Functional Materials, EarlyView.
HKUST‐1/TiO2 composite materials show a very high photocatalytic hydrogen evolution rate which increases as a function of the irradiation time until reaching a plateau and even surpasses the performance of the 1%Pt/TiO2 material after three photocatalytic cycles.
Alisha Khan, Marie Le Pivert, Alireza Ranjbari, Diana Dragoe, Daniel Bahena‐Uribe, Christophe Colbeau‐Justin, Christian Herrero, Dorota Rutkowska‐Zbik, Johnny Deschamps, Hynd Remita   +9 more
wiley   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Ab initio calculation of interlayer exchange coupling in Co-based synthetic antiferromagnet with alloy spacer

AIP Advances, 2020
Synthetic antiferromagnets (SAF) are widely used in magnetic tunnel junctions in order to reduce the stray field of the pinned layer. In SAF, the antiparallel spin alignment is stabilized by interlayer exchange coupling (IEC) between two ferromagnetic ...
Rina Takashima, Takayuki Tsukagoshi, Takamitsu Ishihara, Tadashi Kai   +3 more
doaj   +1 more source

Enhancing CoFe Catalysts with V2CTX MXene‐Derived Materials for Anion Exchange Membrane Electrolyzers

Advanced Functional Materials, EarlyView.
MXene dervied CoFe composites show increased initial Oxygen Evolution Reaction (OER) activity compared to the pure CoFe and MXene in an Anion Exchange Membrane device. Vanadium vacancies in the MXene plays a role in increased OER activity and hinders Fe leaching in the AEM device over using the pure V2C MXene as a support material for the CoFe ...
Can Kaplan, Karuppasamy Dharmaraj, Thorsten Schultz, Leiqiang Qin, Ningjun Chen, Danielle A. Douglas‐Henry, Bastian Schmiedecke, Merve Buldu‐Akturk, Axel Zuber, Iris Dorbandt, Maximilian Reinhardt, Yael Rodriguez‐Ayllon, Yan Lu, Valeria Nicolosi, Norbert Koch, Johanna Rosen, Michelle P. Browne   +16 more
wiley   +1 more source