Quantum point contact with large localized spin: fractional quantization of the ballistic conductance
arXiv:cond-mat/0605262 · doi:10.1103/PhysRevB.74.085322
Abstract
We analyze the conductance of the quantum point contact containing large localized spin J. The additional plateau is formed on a ballistic conductance staircase if only one propagating channel is rendered conducting. The conductance value at this plateau is shown to depend strongly on J and decrease from 3e^2/2h to e^2/h when J increases from 1/2 to infinity, which is in a good agreement with the experimental observations [D.J. Reilly, et al, Phys. Rev. B 63, 121311 (2001)].
10 pages, 2 figures
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- Intrinsic Bistability In Quantum Point Contacts with in-plane Side Gates
- Large Zeeman Splitting in Out-of-Plane Magnetic Field in a Double-Layer Quantum Point Contact
- Conductance matrix of multi terminal semiconductor devices with edge channels
- Spin transport in Aharonov-Bohm ring with exchange interaction