Electron Focusing and Interactions in One Dimension

Seminar

QUEST Center event

No

Speaker

Michael Pepper (University College London)

Date

14/12/2016 - 14:30Add to Calendar 2016-12-14 14:30:00 2016-12-14 14:30:00 Electron Focusing and Interactions in One Dimension We have previously demonstrated that as the 1D confinement potential is weakened the electron wavefunctions relax in the second dimension and can form a two-row system, we now show that a zig-zag formation can be observed in electron focusing experiments. In a similar way we have investigated the dynamics of a strongly confined 1D electron gas and will show that a spin separation occurs. We present direct evidence that this spontaneous spin polarization is responsible for the 0.7 anomaly and can rule out other explanations. Resnick (#209) - room 210 Department of Physics physics.dept@mail.biu.ac.il Asia/Jerusalem public

Place

Resnick (#209) - room 210

Abstract

We have previously demonstrated that as the 1D confinement potential is weakened the electron wavefunctions relax in the second dimension and can form a two-row system, we now show that a zig-zag formation can be observed in electron focusing experiments. In a similar way we have investigated the dynamics of a strongly confined 1D electron gas and will show that a spin separation occurs. We present direct evidence that this spontaneous spin polarization is responsible for the 0.7 anomaly and can rule out other explanations.