The role of periodic orbits in coupled, open, ballistic quantum dots

R. Akis; D. K. Ferry

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The role of periodic orbits in coupled, open, ballistic quantum dots

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We have performed numerical simulations of the quantum mechanical transport and corresponding wave functions of coupled open quantum dots, with contacts supporting a number of propagating modes. In cases where two dots are connected together inseries, we have found that, as has been seen previously in single dots, the wave functions in each dot can be scarred by underlying classical periodic orbits. However, we find that the coupling between dots also allows for a new possibility, wherebyresonant wave functions have scars that appear to extend between dots, providing a new variation on the idea that coupled quantum dots can act as artificial molecules. We also consider finite chains of quantum dots, and find behavior analogous to thatpreviously noted for one dimensional superlattices and corrugated structures coexisting with these scarring effects.

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《Solid-State Electronics》 |1998年第8期|1297-1302|共6页
作者
R. Akis; D. K. Ferry;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
原文格式 PDF
正文语种英语
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The role of periodic orbits in coupled, open, ballistic quantum dots

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