scholarly journals Temperature dependence of electron-spin relaxation in a single InAs quantum dot at zero applied magnetic field

2012 ◽  
Vol 111 (5) ◽  
pp. 053524 ◽  
Author(s):  
X. M. Dou ◽  
B. Q. Sun ◽  
D. S. Jiang ◽  
H. Q. Ni ◽  
Z. C. Niu
2011 ◽  
Vol 84 (3) ◽  
Author(s):  
X. M. Dou ◽  
B. Q. Sun ◽  
D. S. Jiang ◽  
H. Q. Ni ◽  
Z. C. Niu

2010 ◽  
Vol 81 (15) ◽  
Author(s):  
J. H. Buß ◽  
J. Rudolph ◽  
F. Natali ◽  
F. Semond ◽  
D. Hägele

1978 ◽  
Vol 31 (11) ◽  
pp. 2355 ◽  
Author(s):  
DM Doddrell ◽  
DT Pegg ◽  
MR Bendall ◽  
AK Gregson

Time modulation of the g-tensor by intramolecular reorientation between structurally equivalent molecular arrangements is postulated to dominate electron spin relaxation in solutions of some paramagnetic transition-metal complexes. The process is treated theoretically and it is shown that the resulting electron spin relaxation time depends on the correlation time for intramolecular reorientation. The temperature dependence of the nuclear T1 thus yields information concerning the potential energy profile for intramolecular reorientation. Experimental results on the field dependence of the temperature dependence of T1 of the methyl proton in Ru(acac)3 are in accord with the theory.


Electron spin resonance (e. s. r.) spectra of small particles ( ca . 500 nm) of sodium and potassium metals have been recorded over the temperature range 4─100 K. Analysis of the e. s. r. lineshapes yields values of the electron spin-lattice relaxation rate T -1 1 . Both electron spin relaxation and electrical resistivity in the alkalis are governed by the scattering of high velocity conduction electrons by lattice phonons. The temperature dependence of T -1 1 bears a striking similarity to that of the electrical resistivity. In both cases the temperature dependence is adequately described by a Bloch-Grüneisen function for temperatures above ½ θ , where θ is the Debye temperature. If a Debye model is used to approximate the behaviour of lattice vibrational modes, the derived Debye temperatures from the spin relaxation data are about 20% lower in the particulate samples of sodium and potassium than in the corresponding bulk metals.


2010 ◽  
Vol 82 (24) ◽  
Author(s):  
D. Heiss ◽  
V. Jovanov ◽  
F. Klotz ◽  
D. Rudolph ◽  
M. Bichler ◽  
...  

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