scholarly journals Parametric spin excitations in lateral quantum dots

2007 ◽  
Vol 76 (19) ◽  
Author(s):  
Jamie D. Walls
Keyword(s):  
Quantum Dots ◽  
Spin Excitations ◽  
Parametric Spin

Probing Charge and Spin Excitations in Quantum Dots and Molecules

2005 ◽  
Author(s):  
J. J. Finley ◽  
H. J. Krenner ◽  
E. Clark ◽  
M. Kroutvar ◽  
D. Heiss ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spin Excitations

Spin excitations in few-electrons AlGaAs/GaAs quantum dots probed by inelastic light scattering

2006 ◽  
Vol 34 (1-2) ◽  
pp. 304-307 ◽  
Author(s):  
César Pascual García ◽  
Vittorio Pellegrini ◽  
Aron Pinczuk ◽  
Massimo Rontani ◽  
Guido Goldoni ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Light Scattering ◽  
Inelastic Light Scattering ◽  
Spin Excitations

scholarly journals Evidence of Correlation in Spin Excitations of Few-Electron Quantum Dots

2005 ◽  
Vol 95 (26) ◽  
Author(s):  
César Pascual García ◽  
Vittorio Pellegrini ◽  
Aron Pinczuk ◽  
Massimo Rontani ◽  
Guido Goldoni ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Spin Excitations ◽  
Electron Quantum

Pairing of Spin Excitations in Lateral Quantum Dots

2004 ◽  
Vol 93 (20) ◽  
Author(s):  
Marek Korkusiński ◽  
Pawel Hawrylak ◽  
Mariusz Ciorga ◽  
Michel Pioro-Ladrière ◽  
Andrew S. Sachrajda
Keyword(s):  
Quantum Dots ◽  
Spin Excitations

Nanostructure of semiconductor quantum dots in a borosilicate glass matrix by complementary use of HREM and AEM

1990 ◽  
Vol 48 (4) ◽  
pp. 728-729
Author(s):  
M.J. Kim ◽  
L.C. Liu ◽  
S.H. Risbud ◽  
R.W. Carpenter
Keyword(s):  
Quantum Dots ◽  
Borosilicate Glass ◽  
Glass Matrix ◽  
Optical Switching ◽  
Response Times ◽  
Fast Response ◽  
Processing Technique ◽  
Internal Stresses ◽  
Electron Hole ◽  
Spatial Dimensions

When the size of a semiconductor is reduced by an appropriate materials processing technique to a dimension less than about twice the radius of an exciton in the bulk crystal, the band like structure of the semiconductor gives way to discrete molecular orbital electronic states. Clusters of semiconductors in a size regime lower than 2R {where R is the exciton Bohr radius; e.g. 3 nm for CdS and 7.3 nm for CdTe) are called Quantum Dots (QD) because they confine optically excited electron- hole pairs (excitons) in all three spatial dimensions. Structures based on QD are of great interest because of fast response times and non-linearity in optical switching applications.In this paper we report the first HREM analysis of the size and structure of CdTe and CdS QD formed by precipitation from a modified borosilicate glass matrix. The glass melts were quenched by pouring on brass plates, and then annealed to relieve internal stresses. QD precipitate particles were formed during subsequent "striking" heat treatments above the glass crystallization temperature, which was determined by differential thermal analysis.

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