Electrical conductivity of liquid Hydrogen

ORAL

Abstract

DC electrical conductivity of liquid Hydrogen under high pressure has been measured by shock-wave experiments a long time ago [Phys. Rev. Lett. 76, 1860 (1996)], however, an accurate theoretical calculation of electrical conductivity is still unavailable. Ab-initio DFT calculations seem to overestimate the DC conductivity value by about 6 times. On the other hand, coupled electron-ion Monte Carlo (CEIMC) simulation [Phys. Rev. Lett. 97, 235702 (2006)] has predicted different high-pressure Hydrogen molecular-atomic transition than the DFT calculation. In this talk I will report our preliminary electrical conductivity results from CEIMC simulations using the Kubo formula with energies and current-current matrix elements computed with correlated quantum Monte Carlo methods.

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Authors

  • Fei Lin

    Physics Department, University of Illinois at Urbana-Champaign, IL, USA, University of Illinois at Urbana-Champaign

  • Kris Delaney

    Materials Research Laboratory, UC Santa Barbara, University of California, Santa Barbara

  • Miguel Morales

    University of Illinois at Urbana-Champaign

  • Carlo Pierleoni

    Department of Physics, University of L'Aquila, University of L'Aquila

  • Richard Martin

    University of Illinois at Urbana-Champaign

  • David Ceperley

    Department of Physics, University of Illinois at Urbana-Champaign, University of Illinois at Urbana-Champaign