Spin echo dynamics under an applied drift field in graphene nanoribbon superlattices Articles uri icon

publication date

  • December 2013

start page

  • 1

end page

  • 5

issue

  • 23 (233112S)

volume

  • 103

international standard serial number (ISSN)

  • 0003-6951

electronic international standard serial number (EISSN)

  • 1077-3118

abstract

  • We investigate the evolution of spin dynamics in graphene nanoribbon superlattices (GNSLs) with armchair and zigzag edges in the presence of a drift field. We determine the exact evolution operator and show that it exhibits spin echo phenomena due to rapid oscillations of the quantum states along the ribbon. The evolution of the spin polarization is accompanied by strong beating patterns. We also provide detailed analysis of the band structure of GNSLs with armchair and zigzag edges.

keywords

  • quantum-dot; qubits