2007/02/13 by Y. Alhassid, L. Fang, Alhassid, Y. +4
Earth and Planetary Sciences · Physics and Astronomy · #Advanced Chemical Physics Studies #FOS: Physical sciences #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Nuclear Theory (nucl-th) #Superconductivity (cond-mat.supr-con) #Theoretical and Computational Physics #cond-mat.mes-hall #cond-mat.supr-con #nanoparticles nucleation surface interactions #nucl-th
paper · pdf · doi:10.48550/arxiv.cond-mat/0702304
8 pages, 6 figures
arxiv created 2007/02/13 · openalex publication_date 2007/02/13 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We use an auxiliary-field Monte Carlo (AFMC) method to calculate thermodynamic properties (spin susceptibility and heat capacity) of ultra-small metallic grains in the presence of pairing correlations. This method allows us to study the crossover from bulk systems, where mean-field BCS theory is valid, to the fluctuation-dominated regime of ultra-small particles at finite temperature. The computational effort at low temperatures is significantly reduced by exploiting a simple renormalization method.