Báo cáo hóa học: " Self-assembled InAs quantum dot formation on GaAs ring-like nanostructure templates" pdf

... on GaAs ring-like nanostructures. The progression of the InAs QD formation on these template GaAs ring-like structures is demonstrated. Increased deposition of InAs on the ring-like nanostructures ... EXPRESS Self-assembled InAs quantum dot formation on GaAs ring-like nanostructure templates N. W. Strom Æ Zh. M. Wang Æ J. H. Lee Æ Z. Y. AbuWaar Æ Yu. I....

Ngày tải lên: 22/06/2014, 22:20

... studied the full driven quantum spin and charge dynamics of single electron confined in one- dimensional double quantum dot with spin-orbit cou- pling. E quations of motion have been solved in ... information processing can be done by using spins of electrons in semiconductor quantum dots [2]. Spin- orbit coupling makes the dynamics even in the basic systems such as the single-electro...

Ngày tải lên: 21/06/2014, 05:20

Ngày tải lên: 21/06/2014, 20:20

... Provisional PDF corresponds to the article as it appeared upon acceptance. Fully formatted PDF and full text (HTML) versions will be made available soon. Effects of ZnO nanoparticulate addition on ... Central. For information about publishing your research in Nanoscale Research Letters go to http://www.nanoscalereslett.com/authors/instructions/ For information about other SpringerOpen p...

Ngày tải lên: 21/06/2014, 17:20

... unoptimised for absorption and collection. Hence, the very low currents currently obtained are not a concern. Fabrication of Single-Junction Silicon Quantum Dot Solar Cell on Quartz Substrate Alternating ... it would be a clear demonstration that the electronic band gap of the nanostructured material is enhanced due to the quantum confinement effect. At present, the emphasis is on in...

Ngày tải lên: 21/06/2014, 07:20

... 62:4853. 13. D’yakonov MI, Perel VI: Spin relaxation of conduction electrons in noncentrosymmetric semiconductors. Sov Phys Solid State 1972, 13:3023. 14. Zhang P, Wu MW: Spin diffusion in Si/SiGe quantum ... Spin relaxation in the absence of D’yakonov-Perel’ relaxation mechanism. Phys Rev B 2009, 79:075303. 15. D’Yakonov MI, Kachorovskii VYu: Spin relaxation of two-dimensional electrons in...

Ngày tải lên: 21/06/2014, 05:20

... the incorporation of excess As atoms into the AlGaAs S.I GaAs( 001) substrate 100-nm AlGaAs 4-nm GaAs Qw 20-nm AlGaAs 30-nm AlGaAs 200-580ºC 10-nm GaAs 580ºC 580ºC Figure 1 Sample structure of a 4-nm GaAs/ AlGaAs ... morphological changes and interdiffusion. Abbreviations ML: monolayer; PL: photoluminescence; RHEED: reflection high-energy electron diffraction; QDs: quantum dots; QWs:...

Ngày tải lên: 21/06/2014, 06:20

... net energy contribution from the motion across the well, and k y , k z correspond to the continuous spectrum along the QW. Analytic solutions of (2) are obtained from second order perturbation theory, ... þ2nÞ=Cð2nÞ and c n o is found from the normalization condition. Substitution into the series solution and application of the boundary conditions at w ¼ 1ð " f ¼ 0Þ yields the eigen valu...

Ngày tải lên: 21/06/2014, 20:20

... position of the non-zero conductance in Fig. 5a, b are the same, indicating that one can flip the electron spin in the bonding and antibonding states without affecting its sate properties. Conclusion In ... the conductance G r and spin polarization p ¼ðG " À G # Þ=ðG " þ G # Þ on the Fermi level e for k = U = 0 and various Dt. The two dots now are connected in a serial configuration...

Ngày tải lên: 22/06/2014, 01:20

... in quantum commu- nication as precisely controlled single photon emitters working at telecommunication bands. Keywords Quantum dot Æ Site-Control Æ Atomic-force microscope Æ Local oxidation Æ Quantum ... require- ments. The site-controllability of single dot emitters at telecommunication bands is thus revealed. The single dot peaks look broader than conven- tionally grown self-as...

Ngày tải lên: 22/06/2014, 22:20