• 文献标题:   Theoretical investigation into the possibility of multiorbital magnetically ordered states in isotropically superstrained graphene
  • 文献类型:   Article
  • 作  者:   CRACO L
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW B
  • ISSN:   2469-9950 EI 2469-9969
  • 通讯作者地址:   Univ Fed Mato Grosso
  • 被引频次:   2
  • DOI:   10.1103/PhysRevB.96.165412
  • 出版年:   2017

▎ 摘  要

Using density functional dynamical mean-field theory (DFDMFT) we address the problem of antiferromagnetic spin ordering in isotropically superstrained graphene. It is shown that the interplay between strain-induced one-particle band narrowing and sizable on-site electron-electron interactions naturally stabilizes a magnetic phase with orbital-selective spin-polarized p-band electronic states. While an antiferromagnetic phase with strong local moments arises in the p(z) orbitals, the p(x,y) bands reveal a metallic state with quenched sublattice magnetization. We next investigate the possibility of superconductivity to emerge in this selective magnetoelectronic state. Our theory is expected to be an important step to understanding the next generation of flexible electronics made of Mott localized carbon-based materials as well as the ability of superstrained graphene to host coexisting superconductivity and magnetism at low temperatures.