Realization of anomalous multiferroicity in free-standing graphene with magnetic adatoms

Y. Marques, L. S. Ricco, F. A. Dessotti, R. S. Machado, I. A. Shelykh, M. De Souza, A. C. Seridonio

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

It is generally believed that free-standing graphene does not demonstrate any ferroic properties. In the present work we revise this statement and show that a single graphene sheet with a pair of magnetic adatoms can be driven into ferroelectric (FE) and multiferroic (MF) phases by tuning the Dirac cones slope. The transition into the FE phase occurs gradually, but an anomalous MF phase appears abruptly by means of a quantum phase transition. Our findings suggest that such features should exist in graphene recently investigated by scanning tunneling microscopy [H. González-Herrero, Science 352, 437 (2016)SCIEAS0036-807510.1126/science.aad8038].

Original languageEnglish
Article number205119
JournalPhysical Review B
Volume94
Issue number20
DOIs
Publication statusPublished - 2016

Bibliographical note

Publisher Copyright:
© 2016 American Physical Society.

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