Abstract
We study the low-temperature transport properties of 1D quantum wires as the confinement strength and the carrier density are varied using a combination of split gates and a top gate in heterostructures. At intermediate and , we observe a jump in conductance to , suggesting a double wire. On further reducing , plateau at returns. Our results show beginnings of the formation of an electron lattice in an interacting quasi-1D quantum wire. In the presence of an in-plane magnetic field, mixing of spin-aligned levels of the two wires gives rise to more complex states.
- Received 19 September 2008
DOI:https://doi.org/10.1103/PhysRevLett.102.056804
©2009 American Physical Society