Results 61 to 70 of about 326,700 (334)

Electronic Properties of Boron and Nitrogen doped graphene: A first principles study

, 2012
Effect of doping of graphene either by Boron (B), Nitrogen (N) or co-doped by B and N is studied using density functional theory. Our extensive band structure and density of states calculations indicate that upon doping by N (electron doping), the Dirac ...
AK Geim, HJ Monkhorst, KS Novoselov, KS Novoselov, L Ci, LS Panchkarla, P Giannozzi, SS Yu, Sugata Mukherjee, T. P. Kaloni, TB Martins, TP Kaloni, TP Kaloni, TP Kaloni, TP Kaloni, TP Kaloni, TP Kaloni, U Barth von, WH Brito, X Wang, X Wei, Y Fan, YC Cheng   +22 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

Nature‐inspired 3D hierarchical carbon nanotube matrices enable extraordinary solar steam generation

Carbon Energy
Interfacial solar evaporation, which captures solar energy and localizes the absorbed heat for water evaporation, is considered a promising technology for seawater desalination and solar energy conversion.
Chuanshuai Dong, Lei Chen, Weiquan Lin, Zipai Li, Linjie Wei, Chaohua Peng, Huan Liu, Ronghui Qi, Lin Lu, Lizhi Zhang   +9 more
doaj   +1 more source

Persistent currents in carbon nanotubes

, 2002
Persistent currents driven by a static magnetic flux parallel to the carbon nanotube axis are investigated. Owing to the hexagonal symmetry of graphene the Fermi contour expected for a 2D-lattice reduces to two points. However the electron or hole doping
Ando, Byszewski, Cheung, Cheung, E Zipper, Fujiwara, Kim, Krüger, Lee, Lin, Lu, M Margańska, M Szopa, Marganska, Roche, Roche, Saito, Schönenberger, Stebelski, Wohlleben   +19 more
core   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

The influence of heavy doping of TiCoSb intermetallic semiconductor with Cr atoms on structural, kinetic and energetic properties

Фізика і хімія твердого тіла
The structural, electrokinetic, and energetic properties of the TiСо1-xCrxSb semiconductor obtained by doping TiCoSb with Cr atoms introduced into the structure by substituting Co atoms in the crystallographic position 4c were studied.
Yu. Stadnyk, L. Romaka, V.A. Romaka, A. Horyn, V.V. Romaka, T. Lukovskyy, O. Poplavskyi   +6 more
doaj   +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

Review: Probing of the Unoccupied Electronic States in Solids by Inverse Photoemission Spectroscopy

Hittite Journal of Science and Engineering, 2018
This paper reviews the probability of probing the unoccupied electronic states in solids by inverse photoemission spectroscopy IPES . IPES is a surface science technique to analysis the unoccupied electronic states above the Fermi level.
Orhan Zeybek
doaj  

Improved Schottky junction analysis model

Functional Diamond
The intersection of the Fermi and impurity levels in the Schottky junction of boron-doped p-type diamond, a widely used p-type doping scheme for diamond, has been discovered. This indicates that the relationship between the ionization efficiency of boron
Kang Liu, Tao Su, Tongbo Li, Qiaobai He, Saifei Fan, Jiaqi Zhu   +5 more
doaj   +1 more source

Fermi-surface pockets in $YBa_2Cu_3O_{6.5}$ : A comparison of ab initio techniques [PDF]

, 2009
We study the Fermi surface of metallic, non-magnetic \textit{ortho}-II YBa$_2$Cu$_3$O$_{6.5}$ using three different density-functional-based band-structure techniques (GGA, GGA+U, PSIC). The calculated Fermi surface exhibits no pockets in GGA+U and PSIC,
Alessio Filippetti, Danilo Puggioni, J. Grybos, Vincenzo Fiorentini   +3 more
core   +1 more source