Parity oscillations of Kondo temperature in a single molecule break junction

التفاصيل البيبلوغرافية
العنوان: Parity oscillations of Kondo temperature in a single molecule break junction
المؤلفون: Resende, B. M. F, Vernek, E.
المصدر: Appl. Phys. Lett. 100, 212105 (2012)
سنة النشر: 2012
المجموعة: Condensed Matter
مصطلحات موضوعية: Condensed Matter - Mesoscale and Nanoscale Physics
الوصف: We study the Kondo temperature ($T_K$) of a single molecule break junction. By employing a numerical renormalization group calculations we have found that $T_K$ depends dramatically upon the position of the molecule in the wire formed between the contacts. We show that $T_K$ exhibits strong \emph{oscillations} when the parity of the left {and/or} right number of atomic sites ($N_L,N_R$) is changed. For a given set of parameters, the maximum value of $T_K$ occurs for ($odd,odd$) combination, while its minimum values is observed for ($even,even$). These oscillations are fully understood in terms of the effective hybridization function.
Comment: 4 pages, 5 figures
نوع الوثيقة: Working Paper
DOI: 10.1063/1.4720506
URL الوصول: http://arxiv.org/abs/1204.0761
رقم الأكسشن: edsarx.1204.0761
قاعدة البيانات: arXiv