Fransson Jonas
Department of Physics and Materials Science, Uppsala University, Box 530, 751 21, Uppsala, Sweden.
Nanotechnology. 2008 Jul 16;19(28):285714. doi: 10.1088/0957-4484/19/28/285714. Epub 2008 Jun 3.
The dynamics of a single spin embedded in a tunnel junction between ferromagnetic contacts is strongly affected by the exchange coupling to the tunneling electrons. Moment reversal of the local spin induced by the bias voltage across the junction is shown to have a measurable effect on the tunneling current. Furthermore, the frequency of a harmonic bias voltage is picked up by the local spin dynamics and transferred back to the current, generating a double frequency component.
嵌入在铁磁接触之间隧道结中的单个自旋的动力学受到与隧穿电子的交换耦合的强烈影响。由结两端的偏置电压引起的局部自旋的磁矩反转被证明对隧穿电流有可测量的影响。此外，局部自旋动力学拾取谐波偏置电压的频率并将其反馈到电流中，产生一个倍频分量。
