Period halving of Persistent Currents in Mesoscopic Mobius ladders

Details Period halving of Persistent Currents in Mesoscopic Mobius ladders Period halving of Persistent Currents in Mesoscopic Mobius ladders

2002-09-18

arxiv.org/abs/cond-mat/0209421v1

Chin.Phys.Lett. Vol.19,No.7(2002)988

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 Pages with 3 EPS figures

Scientific paper

10.1088/0256-307X/19/7/333

We investigate the period halving of persistent currents(PCs) of non-interacting electrons in isolated mesoscopic M\"{o}bius ladders without disorder, pierced by Aharonov-Bhom flux. The mechanisms of the period halving effect depend on the parity of the number of electrons as well as on the interchain hopping. Although the data of PCs in mesoscopic systems are sample-specific, some simple rules are found in the canonical ensemble average, such as all the odd harmonics of the PCs disappear, and the signals of even harmonics are non-negative. {PACS number(s): 73.23.Ra, 73.23.-b, 68.65.-k}

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