Spin switching in semiconductor quantum dots through spin-orbit coupling

Valín-Rodríguez, Manuel; Puente, A.; Serra, Llorenç; Lipparini, E.

doi:10.1103/physrevb.66.165302

Cited by 28 publications

(26 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…When the confinement energy is much greater than the SO terms, one may use unitary transformations yielding an effective diagonal SO term to obtain analytical solutions. 26 The details are given in Refs. 21 and 26 and only the solution is presented here.…”

mentioning

confidence: 99%

Energy shell structure of a single InAs/GaAs quantum dot with a spin-orbit interaction

et al. 2009

View full text Add to dashboard Cite

We study the evolution of the excited-state photoluminescence of a single self-assembled quantum dot as a function of applied magnetic field in a regime where the cyclotron energy is comparable to the confinement energy. As expected, we observe the splitting of the angular-momentum states following the Fock-Darwin scheme, but we also observe that each state further splits into a doublet which shows an unexpected evolution with increasing magnetic field. This behavior cannot be explained by a simple Zeeman spin splitting but is rather consistent with the observation of spin-orbit coupling where the spin of electrons is coupled with the envelope function orbital angular momentum. We show that the addition of this type of spin-orbit coupling to the single-particle Fock-Darwin model can account for the observed dependence. By comparison of our data with such a model, we derive a spin-orbit intensity of ͓͑3.9Ϯ 0.3͒ ϫ 10 −9 eV cm͔ 2 .

show abstract

mentioning

confidence: 99%

Energy shell structure of a single InAs/GaAs quantum dot with a spin-orbit interaction

et al. 2009

View full text Add to dashboard Cite

show abstract

“…To treat the interacting problem we impose no symmetry restriction in space and we solve numerically the full two-dimensional problem including the interaction within density functional theory, using a generalization of the local-spin-density approximation (LSDA) for non-collinear spin densities (see Ref. [15] for a previous application of this formalism). Within this scheme, we find that even two-electron states can be confined to the dot.…”

mentioning

confidence: 99%

Quantum dots based on spin properties of semiconductor heterostructures

2004

Self Cite

View full text Add to dashboard Cite

The possibility of a novel type of semiconductor quantum dots obtained by spatially modulating the spin-orbit coupling intensity in III-V heterostructures is discussed. Using the effective mass model we predict confined one-electron states having peculiar spin properties. Furthermore, from mean field calculations (local-spin-density and Hartree-Fock) we find that even two electrons could form a bound state in these dots.Comment: 9 pages, 3 figures. Accepted in PRB (Brief Report) (2004

show abstract

“…[11][12][13][14][15][16][17][18][19][20][21][22][23] It links the spin and the charge dynamics, hence opening the possibility of spin control by means of electric fields. 24,25 Here we show that the SO interaction strongly affects the optical properties of electron space-charge layers in GaAs by inducing a strong coupling between charge-density and spindensity excitations in the long-wavelength limit.…”

mentioning

confidence: 99%