Transmittance through Aharonov-Bohm Rings: Signature of Spin-Charge Separation

K. HALLBERG, A. A. ALIGIA, A. KAMPF AND B. NORMAND

Proceedings of the LT24, Vol. 850 of the American Institute of Physics, Conference Proceedings Series

American Institute of Physics

Año: 2006 p. 1397 - 1400

We present numerical calculations concerning the phenomenon of spin-charge separation in low-dimensionalstrongly correlated electron systems. Specifically, we study the t-J model on a flux-threaded ring connected to semi-infinite free-electron leads. The transmittance through such an Aharonov-Bohm ring shows an interference pattern with characteristic sharp dips at certain flux values, determined by the filling, which are a direct consequence of spin-charge separation in a nanoscopic system.