Charging Effects on Nuclear Spin Relaxation in Quantum Dots

作者: Y. B. Lyanda-Geller , I. L. Aleiner , B. L. Altshuler

DOI: 10.1023/A:1025374125559

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摘要: We study the mechanism of nuclear spin relaxation in quantum dots due to electron exchange with 2D gas. show that rate T1−1 is dramatically affected by Coulomb blockade (CB) and can be controlled gate voltage. In case strong spin–orbit (SO) coupling maximal CB valleys whereas for weak SO maximum 1/T1 near peaks. The physical at identified as Debye–Mandelstam–Leontovich–Pollak–Geballe relaxational mechanism.

参考文章(15)
Anatole Abragam, Principles of Nuclear Magnetism ,(1993)
J. Korringa, Nuclear magnetic relaxation and resonnance line shift in metals Physica D: Nonlinear Phenomena. ,vol. 16, pp. 601- 610 ,(1950) , 10.1016/0031-8914(50)90105-4
Keith R. Wald, Leo P. Kouwenhoven, Paul L. McEuen, Nijs C. van der Vaart, C. T. Foxon, Local dynamic nuclear polarization using quantum point contacts. Physical Review Letters. ,vol. 73, pp. 1011- 1014 ,(1994) , 10.1103/PHYSREVLETT.73.1011
J. M. Kikkawa, All-optical magnetic resonance in semiconductors Science. ,vol. 287, pp. 473- 476 ,(2000) , 10.1126/SCIENCE.287.5452.473
Y. B. Lyanda-Geller, I. L. Aleiner, B. L. Altshuler, Coulomb "Blockade" of nuclear spin relaxation in quantum dots. Physical Review Letters. ,vol. 89, pp. 107602- ,(2002) , 10.1103/PHYSREVLETT.89.107602
I.D. Vagner, T. Maniv, Hyperfine interactions in quantum Hall systems Physica B: Condensed Matter. ,vol. 204, pp. 141- 148 ,(1995) , 10.1016/0921-4526(94)00254-S
D. Paget, G. Lampel, B. Sapoval, V. I. Safarov, Low field electron-nuclear spin coupling in gallium arsenide under optical pumping conditions Physical Review B. ,vol. 15, pp. 5780- 5796 ,(1977) , 10.1103/PHYSREVB.15.5780
D. Gammon, Al. L. Efros, T. A. Kennedy, M. Rosen, D. S. Katzer, D. Park, S. W. Brown, V. L. Korenev, I. A. Merkulov, Electron and Nuclear Spin Interactions in the Optical Spectra of Single GaAs Quantum Dots Physical Review Letters. ,vol. 86, pp. 5176- 5179 ,(2001) , 10.1103/PHYSREVLETT.86.5176
Dimitri Antoniou, A. H. MacDonald, Nuclear-spin relaxation and spin-wave collective modes in a disordered two-dimensional electron gas. Physical Review B. ,vol. 43, pp. 11686- 11693 ,(1991) , 10.1103/PHYSREVB.43.11686
D. V. Averin, Yu. V. Nazarov, Virtual electron diffusion during quantum tunneling of the electric charge Physical Review Letters. ,vol. 65, pp. 2446- 2449 ,(1990) , 10.1103/PHYSREVLETT.65.2446