Survival of parity effects in superconducting grains at finite temperature

Abstract

We study the thermodynamics of a small, isolated superconducting grain using a recently developed quantum Monte Carlo method. This method allows us to simulate grains at any finite temperature and with any level spacing in an exact way. We focus on the pairing energy, pairing gap, condensation energy, heat capacity and spin susceptibility to describe the grain. We discuss the interplay between finite size (mesoscopic system), pairing correlations and temperature in full detail.

arXiv comment4 pages, 7 figures

References in corpus (14)

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Cited by in corpus (6)

• Effects of symmetry breaking in finite quantum systems
• Loop updates for quantum Monte Carlo simulations in the canonical ensemble
• Thermodynamics of ultrasmall metallic grains in the presence of pairing and exchange correlations: Mesoscopic fluctuations
• The coexistence of superconductivity and ferromagnetism in nano-scale metallic grains
• Subgap states in superconducting islands
• Spin-orbit scattering in superconducting nanoparticles