We study a system in which electrons in a two-dimensional electron gas are confined by a nonhomogeneous nuclear-spin polarization. The system consists of a heterostructure that has nonzero nuclei spins. We show that in this system electrons can be confined into a dot region through a local nuclear-spin polarization. The nuclear-spin-polarization-induced quantum dot has interesting properties indicating that electron energy levels are time dependent because of the nuclear-spin relaxation and diffusion processes. Electron confining potential is a solution of diffusion equation with relaxation. Experimental investigations of the time dependence of electron energy levels will result in more information about nuclear-spin interactions in solids.
Published in Physical Review B, ed. Gene D. Sprouse, Volume 69, Issue 8, 2004, pages 085314-1-085314-5.
Pershin, Y. V. (2004). Electronic structure of nuclear-spin-polarization-induced quantum dots. Physical Review B, 69(8), 085314-1 - 085314-5. DOI: 10.1103/PhysRevB.69.085314
© Physical Review B, 2004, American Physical Society