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Bistability of optically induced nuclear spin orientation in quantum dots

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Article number195310
<mark>Journal publication date</mark>13/11/2007
<mark>Journal</mark>Physical review B
Issue number19
Number of pages6
Publication StatusPublished
<mark>Original language</mark>English


We demonstrate that bistability of the nuclear spin polarization in optically pumped semiconductor quantum dots is a general phenomenon possible in dots with a wide range of parameters. In experiment, this bistability manifests itself via the hysteresis behavior of the electron Zeeman splitting as a function of either pump power or external magnetic field. In addition, our theory predicts that the nuclear polarization can strongly influence the charge dynamics in the dot leading to bistability in the average dot charge.

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© 2007 The American Physical Society