• 文献标题:   Spintronics with graphene quantum dots
  • 文献类型:   Review
  • 作  者:   DROTH M, BURKARD G
  • 作者关键词:   quantum dot, spintronic, graphene, twodimensional material, magnetism
  • 出版物名称:   PHYSICA STATUS SOLIDIRAPID RESEARCH LETTERS
  • ISSN:   1862-6254 EI 1862-6270
  • 通讯作者地址:   Univ Konstanz
  • 被引频次:   6
  • DOI:   10.1002/pssr.201510182
  • 出版年:   2016

▎ 摘  要

Thanks to its intrinsic ability to preserve spin coherence, graphene is a prime material for spintronics. In this review article, we summarize recent achievements related to spintronics in graphene quantum dots and motivate this field from a spintronics and a materials science point of view. We focus on theory but also discuss recent experiments. The main sources of spin decoherence are interactions with lattice excitations and the hyperfine interaction with present nuclear spins. We explain effective spin-phonon coupling in detail and present a generic power law for the spin relaxation time T-1 as a function of the magnetic field. For specific cases, we discuss spin relaxation in detail. The Heisenberg exchange interaction is paramount for coherent spin qubit operation and addressed in the context of magnetism in graphene nanoflakes. Nuclear spins in the host and surrounding material can be considered by several means and the influence of C-13 nuclei has been studied in detail. Impressive advances in general spintronics [GRAPHICS] and the fabrication of graphene devices are likely to spark significant advances in spintronics with graphene quantum dots in the near future. (C) 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim