Microwave Assisted Transport in a Single Donor Silicon Quantum Dot

Details Microwave Assisted Transport in a Single Donor Silicon Quantum Dot Microwave Assisted Transport in a Single Donor Silicon Quantum Dot

2008-07-31

arxiv.org/abs/0807.5026v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 Figures

Scientific paper

Single donors in semiconductor nanostructures represent a key element to develop spin related quantum functionalities in atomic scale devices. Quantum transport through a single Arsenic donor in the channel of a Silicon nano-field effect transistor under microwave irradiation is investigated. The device is characterized at mK temperatures in the regime of Coulomb-blockade. Photon assisted tunneling and microwave induced electron pumping regimes are revealed respectively at low and high microwave power. At sufficiently high power, the microwave irradiation induces tunneling through the first excited energy level of the $D_0$ energy of the donor. Such microwave assisted transport at zero bias enhances the resolution in the spectroscopy of the energy levels of the donor.

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