Results 41 to 50 of about 109,910 (319)

A Thouless quantum pump with ultracold bosonic atoms in an optical superlattice [PDF]

Nature Physics, 2015
Topological charge pumping enables the transport of charge through an adiabatic cyclic evolution of the underlying Hamiltonian. In contrast to classical transport, the transported charge is quantized and purely determined by the topology of the pump ...
M. Lohse, C. Schweizer, O. Zilberberg, M. Aidelsburger, I. Bloch   +4 more
semanticscholar   +1 more source

Strain-induced half-metallic ferromagnetism in zinc blende CrP/MnP superlattice: First-principles study

, 2010
Using first-principles calculations within generalized gradient approximation, the electronic and magnetic properties of zinc blende (zb) CrP/MnP superlattice are investigated. The equilibrium lattice constant is calculated to be $5.33\,$\AA.
Rahman, Gul
core   +1 more source

A superlattice interface and S-scheme heterojunction for ultrafast charge separation and transfer in photocatalytic H2 evolution

Nature Communications
The rapid recombination of photoinduced charge carriers in semiconductors fundamentally limits their application in photocatalysis. Herein, we report that a superlattice interface and S-scheme heterojunction based on Mn0.5Cd0.5S nanorods can ...
Sijie Wan, Wang Wang, Bei Cheng, Guoqiang Luo, Qiang Shen, Jiaguo Yu, Jianjun Zhang, Shaowen Cao, Lianmeng Zhang   +8 more
semanticscholar   +1 more source

Influence of quantum dot shape on energy spectra of three-dimensional quantum dots superlattices

Фізика і хімія твердого тіла, 2020
The band spectrum of quantum dots superlattices of different shapes at points of high symmetry is determined. Cubic, cylindrical and spherical quantum dots are considered. The width of the minizone is calculated.
I.V. Bilynskyi, R.Ya. Leshko, H.O. Bandura   +2 more
doaj   +1 more source

Laser induced spin injection to [GeTe/Sb2Te3] superlattice through a TbFeCo film

AIP Advances, 2022
A [GeTe/Sb2Te3] superlattice is known as a topological insulator and it shows magnetic responses such as magneto-optical effect although it does not contain any magnetic element.
Satoshi Sumi, Hiroyuki Awano, Junji Tominaga   +2 more
doaj   +1 more source

Measurement of miniband parameters of a doped superlattice by photoluminescence in high magnetic fields

, 2004
We have studied a 50/50\AA superlattice of GaAs/Al$_{0.21}$Ga$_{0.79}$As composition, modulation-doped with Si, to produce $n=1.4\times 10^{12}$ cm$^{-2}$ electrons per superlattice period.
A A Quivy, A B Henriques, Bastard G, E Abramof, Grahn H T, Helm M, Henriques A B, Moore K J, Nelder J A, R F Oliveira, Schmitt-Rink S, T E Lamas, Voisin P   +12 more
core   +1 more source

Enhanced overall efficiency of GaInN-based light-emitting diodes with reduced efficiency droop by Al-composition-graded AlGaN/GaN superlattice electron blocking layer [PDF]

, 2019
AlxGa1-xN/GaN superlattice electron blocking layers (EBLs) with gradually decreasing Al composition toward the p-type GaN layer are introduced to GaInN-based high-power light-emitting diodes (LEDs).
David Meyaard, Dong Yeong Kim, E. Fred Schubert, Jaehee Cho, Joo Won Choi, Jun Hyuk Park, Kim, JK, Sunyong Hwang, Yu Dae Han   +8 more
core   +1 more source

Functional nanoporous graphene superlattice

Nature Communications
Two-dimensional (2D) superlattices, formed by stacking sublattices of 2D materials, have emerged as a powerful platform for tailoring and enhancing material properties beyond their intrinsic characteristics.
Hualiang Lv, Yuxing Yao, Mingyue Yuan, Guanyu Chen, Yuchao Wang, L. Rao, Shucong Li, Ufuoma I. Kara, Robert L Dupont, Cheng Zhang, Boyuan Chen, Bo Liu, Xiaodi Zhou, R. Wu, S. Adera, Renchao Che, Xingcai Zhang, Xiaoguang Wang   +17 more
semanticscholar   +1 more source

Macroscopic Au@PANI Core/shell Nanoparticle Superlattice Monolayer Film with Dual-responsive Plasmonic Switches.

ACS Applied Materials and Interfaces, 2020
The self-assembled gold nanoparticles superlattice displays unusual but distinctive features such as highly mechanical and free-standing performance, electrical conductivity and plasmonic properties, which were widely employed in various applications ...
Han Lin, Liping Song, Youju Huang, Qian Cheng, Yanping Yang, Zhiyong Guo, Fengmei Su, Tao Chen   +7 more
semanticscholar   +1 more source

Quantum Wire-on-Well (WoW) Cell With Long Carrier Lifetime for Efficient Carrier Transport [PDF]

, 2015
A quantum wire-on-well (WoW) structure, taking advantage of the layer undulation of an In- GaAs/GaAs/GaAsP superlattice grown on a vicinal substrate, was demonstrated to enhance the carrier collection from the confinement levels and extend the carrier ...
Alonso Alvarez, D, Ekins-Daukes, NJ, Fujii, H, Katoh, K, Nakano, Y, Sodabanlu, H, Sugiyama, M, Toprasertpong, K, Watanabe, K   +8 more
core   +1 more source