Abstract
An active area of post-CMOS device research is to study the possibility of realizing and exploiting exotic quantum states in nanostructures. In this paper we consider one such system, two layers of graphene separated by an oxide insulator. This system has been predicted to have an excitonic condensate that survives above room temperature. We describe a computational technique—path integral quantum Monte Carlo (PIMC)—that directly simulates many-body quantum phenomena, including excitonic condensation. Starting from a simplified quasiparticle model, the many-body PIMC simulations show excitonic pairing and a confirm a superfluid phase that persists above room temperature. We then present an atomistic PIMC model that captures more details of graphene than our quasiparticle model, and discuss how to extract parameters for a non-equilibrium Green’s function calculation.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
