Ma Shan-Shan et al 2009 Chinese Phys. Lett. 26 117201 doi:10.1088/0256-307X/26/11/117201
Spin Relaxation of Electrons in Single InAs Quantum Dots
Ma Shan-Shan, Dou Xiu-Ming, Chang Xiu-Ying, Sun Bao-Quan, Xiong Yong-Hua, Niu Zhi-Chuan and Ni Hai-Qiao
Show affiliationsCONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES
By using polarization-resolved photoluminescence spectra, we study the electron spin relaxation in single InAs quantum dots (QDs) with the configuration of positively charged excitons X+ (one electron, two holes). The spin relaxation rate of the hot electrons increases with the increasing energy of exciting photons. For electrons localized in QDs the spin relaxation is induced by hyperfine interaction with the nuclei. A rapid decrease of polarization degree with increasing temperature suggests that the spin relaxation mechanisms are mainly changed from the hyperfine interaction with nuclei into an electron-hole exchange interaction.
- PACS
- Subjects
-
Condensed matter: electrical, magnetic and optical
- Dates
-
Issue 11 (November 2009)
Received 1 July 2009
-
Spin Relaxation of Electrons in Single InAs Quantum Dots
Ma Shan-Shan et al 2009 Chinese Phys. Lett. 26 117201
-
A Sensitive Scheme to Observe Weak Photo-Refraction Effects in Some Nonlinear Optical Crystals Pumped by Ultrashort Optical Pulses
Xu Shi-Xiang et al 2009 Chinese Phys. Lett. 26 114209
-
Quaternionic soliton equations from Hamiltonian curve flows in
Stephen C Anco and Esmaeel Asadi 2009 J. Phys. A: Math. Theor. 42 485201
-
Properties of a class of block-iterative methods
Tommy Elfving and Touraj Nikazad 2009 Inverse Problems 25 115011
-
The semiclassical origin of curvature effects in universal spectral statistics
Daniel Waltner et al 2009 J. Phys. A: Math. Theor. 42 292001
-
Clusters of solutions and replica symmetry breaking in random k-satisfiability
Andrea Montanari et al J. Stat. Mech. (2008) P04004
-
Photo-induced formation and self-assembling of gold nanoparticles in aqueous solution of amphiphilic dendrimers with oligo(p-phenylene vinylene) core branches and oligo(ethylene oxide) terminal chains
Dong Wook Chang and Liming Dai 2007 Nanotechnology 18 365605
-
Effect of K3PO4 addition as sintering inhibitor during calcination of Y2O3 nanoparticles
K Soga et al 2009 J. Phys.: Conf. Ser. 191 012003
-
Reply to the comment on 'New geometry for the quasi-binary incident electron–centre of mass collision in the (e, 3e) process on He'
Rakesh Choubisa and K K Sud 2008 J. Phys. B: At. Mol. Opt. Phys. 41 208002
-
Resistance switching of an individual Ag2S/Ag nanowire heterostructure
Changhao Liang et al 2007 Nanotechnology 18 485202
Users also read
What's this?- Grain Size Effect on Electrical Conductivity and Giant Magnetoresistance of Bulk Magnetic Polycrystals
- ULF Waves Associated with Solar Wind Deceleration in the Earth's Foreshock
- Deformation Effect on the Center-of-Mass Correction Energy in Nuclei Ranging from Oxygen to Calcium
Related review articles
What's this?- Supra- and nanocrystallinities: a new scientific adventure
- Single metal nanoparticles: optical detection, spectroscopy and applications
- Transformation optics and metamaterials