Dynamical Nuclear Polarization in Double Quantum Dots Induced by Hyperfine Interaction Articles uri icon

publication date

  • March 2008

start page

  • 1189

end page

  • 1190


  • 5


  • 40

International Standard Serial Number (ISSN)

  • 1386-9477

Electronic International Standard Serial Number (EISSN)

  • 1873-1759


  • In this work the tunneling current through a weakly coupled DQDs in an external ;I/I;DC is analyzed. We propose a model which includes hyperfine interaction. The time evolution for electronic charge occupations and for the nuclei polarizations in each dot is obtained by means of rate equations which are self-consistently solved. We analyze the current in the SB region as a function of ;I/I;DC and observe hysteretic behavior for magnetic fields corresponding to the crossings between triplet and singlet states. Bistability is also produced for the induced nuclei spin polarizations within each quantum dot.