Results 71 to 80 of about 7,029,328 (321)

Which Chromium–Sulfur Compounds Exist as 2D Material?

Advanced Functional Materials, EarlyView.
2D chromium sulfides synthesized using molecular beam epitaxy on graphene. Structural characterization reveals two novel 2D materials, Cr2S3‐2D, which lacks a direct bulk counterpart, and Cr223S${\rm Cr}_{2\frac{2}{3}}{\rm S}$4‐2D, a minimum thickness version of Cr5S6. However, attempts to synthesize CrS2 are unsuccessful. Both new 2D phases are stable
Affan Safeer, Mahdi Ghorbani‐Asl, Wouter Jolie, Arkady V. Krasheninnikov, Thomas Michely, Jeison Fischer   +5 more
wiley   +1 more source

The shape of the Fermi surface

Physics Letters B, 1996
Abstract We show that in the surface region, where the matter density falls off, the local momentum distribution of a many Fermion system becomes anisotropic. The local Fermi surface has a predominantly prolate shape, with its long axis normal to the surface in both spherical and semi-infinite many Fermion systems.
Jeffrey M. Thompson, Aurel Bulgac
openaire   +2 more sources

Integration of Perovskite/Low‐Dimensional Material Heterostructures for Optoelectronics and Artificial Visual Systems

Advanced Functional Materials, EarlyView.
Heterojunctions combining halide perovskites with low‐dimensional materials enhance optoelectronic devices by enabling precise charge control and improving efficiency, stability, and speed. These synergies advance flexible electronics, wearable sensors, and neuromorphic computing, mimicking biological vision for real‐time image analysis and intelligent
Yu‐Jin Du, Junjie Yang, Ziyu Lv, Yongbiao Zhai, Zezhuang Yi, Yuhui Xie, Ming‐Lin Zheng, Xiangyu Ma, Guodong Gong, Yan Wang, Ye Zhou, Su‐Ting Han   +11 more
wiley   +1 more source

3D quantum Hall effect of Fermi arcs in topological semimetals

, 2017
The quantum Hall effect is usually observed in 2D systems. We show that the Fermi arcs can give rise to a distinctive 3D quantum Hall effect in topological semimetals.
Lu, Hai-Zhou, Sun, Hai-Peng, Wang, C. M., Xie, X. C.   +3 more
core   +1 more source

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

Advanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian, Yao Zhang, Xiaowei Sheng, Xiuxian Yang, Gang Zhang, Junfeng Gao, Xiaotian Wang   +6 more
wiley   +1 more source

Fermi-arc diversity on surface terminations of the magnetic Weyl semimetal Co3Sn2S2 [PDF]

Science, 2019
Magnetic Weyl semimetals Weyl semimetals (WSMs)—materials that host exotic quasiparticles called Weyl fermions—must break either spatial inversion or time-reversal symmetry. A number of WSMs that break inversion symmetry have been identified, but showing
Noam Morali, R. Batabyal, P. Nag, Enke Liu, Qiunan Xu, Yan Sun, Binghai Yan, C. Felser, N. Avraham, H. Beidenkopf   +9 more
semanticscholar   +1 more source

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

Observation of the J-sheet of the Fermi surface of YbRh2Si2

, 2009
We report a previously unobserved quantum oscillation frequency in YbRh2Si2. This is the first quantum oscillation that can definitely be assigned to the larger of the two major sheets of the Fermi surface predicted by band structure calculations ...
Ahuja, Beach, Custers, Daou, Friedemann, Fulde, Gegenwart, Gegenwart, King, Knebel, Norman, Paschen, Rourke, Rourke, Senthil, Shim, Shishido, Shoenberg, Taillefer, Tokiwa, Viola Kusminskiy, Wigger   +21 more
core   +1 more source

Chiral degeneracies and Fermi-surface Chern numbers in bcc Fe [PDF]

, 2015
The degeneracies in the spinor bandstructure of bcc Fe are studied from first principles. We find numerous isolated band touchings carrying chiral charges of magnitude one (Weyl points) or two (double-Weyl nodes), as well as nonchiral degeneracy loops ...
D. Gosálbez-Martínez, Ivo Souza, D. Vanderbilt   +2 more
semanticscholar   +1 more source

Single Atom‐Particle Tandem Catalysis Enables Enhanced Desolvation Kinetics for Low‐Temperature Li‐S Batteries

Advanced Functional Materials, EarlyView.
In this work, the tandem catalyst consisted of single Fe atom and Fe3C nanoparticles on porous carbon sheet is initially proposed and developed to facilitate the dissociation of Li(solvent)x+ to release more isolated Li+ to participate in the subsequent polysulfide redox conversions by decreasing the related barriers, contributing to fast kinetics of ...
Yuhang Lin, Jian Wang, Xin Zhang, Xiaomin Cheng, Quan Zhuang, Jing Zhang, Qinghua Guan, Yanli Wang, Chunyin Shen, Hongzhen Lin, Liang Zhan, Licheng Ling, Yongzheng Zhang   +12 more
wiley   +1 more source