Rose Davies

Aston University, UK

25 January 2024 Thu 4 pm

                                      IBS Center for Theoretical Physics of Complex Systems (PCS), Administrative Office (B349), Theory Wing, 3rd floor

                                      Expo-ro 55, Yuseong-gu, Daejeon, South Korea, 34126 Tel: +82-42-878-8633                     

Recent experiments on weakly confined quantum point contacts have shown plateaus in conductance occurring at fractions of the quantum of conductance even in the absence of a magnetic field. This talk will consider a discrete model of strongly interacting 1D electrons, where fractionally charged solitons carry the current between two weakly connected contacts. For spinless electrons, the conductance is unaffected by the interactions in the channel. The spinful case, however, displays a peak conductance at even-denominator fractions of the quantum of conductance.

  1. resonant fractional conductance in 1d wigner chains