Events
SINGLE SPIN DETECTION WITH THE SCANNING TUNNELING MICROSCOPE
00:00 25-03-2008
'Courier New'; mso-ansi-language: EN-US; mso-fareast-font-family: Calibri; mso-fareast-theme-font: minor-latin; mso-fareast-language: EN-US; mso-bidi-language: HE">We are using the noise power in the tunneling current at
the Larmor frequency of a single electron spin to detect it with
the STM. Several spins center were detected. Pb centers, iron atoms
and paramagnetic molecules adsorbed on the surface. Several
spectral parameters were measured from the g value, to hyperfine
coupling and a certain type of lifetime. We demonstrate that
looking at several spins give a line-shape that is similar to
macroscopic ESR. We also demonstrate that this line-shape can be
affected by changing the tunneling conditions. The instrumental
aspect of this method will be discussed, together with the possible
mechanism, and future potential.
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the Larmor frequency of a single electron spin to detect it with
the STM. Several spins center were detected. Pb centers, iron atoms
and paramagnetic molecules adsorbed on the surface. Several
spectral parameters were measured from the g value, to hyperfine
coupling and a certain type of lifetime. We demonstrate that
looking at several spins give a line-shape that is similar to
macroscopic ESR. We also demonstrate that this line-shape can be
affected by changing the tunneling conditions. The instrumental
aspect of this method will be discussed, together with the possible
mechanism, and future potential.
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