Probing magnetism in 2D van der Waals crystalline insulators via electron tunneling

Research output: Contribution to journalArticleScientificpeer-review


  • D. R. Klein
  • D. MacNeill
  • J. L. Lado
  • D. Soriano
  • E. Navarro-Moratalla
  • K. Watanabe
  • T. Taniguchi
  • S. Manni
  • P. Canfield
  • J. Fernández-Rossier
  • P. Jarillo-Herrero

Research units

  • Massachusetts Institute of Technology
  • QuantaLab
  • International Iberian Nanotechnology Laboratory
  • Swiss Federal Institute of Technology Zurich
  • University of Valencia
  • National Institute for Materials Science Tsukuba
  • Iowa State University
  • Tata Institute of Fundamental Research


Magnetic insulators are a key resource for next-generation spintronic and topological devices. The family of layered metal halides promises varied magnetic states, including ultrathin insulating multiferroics, spin liquids, and ferromagnets, but device-oriented characterization methods are needed to unlock their potential. Here, we report tunneling through the layered magnetic insulator CrI3 as a function of temperature and applied magnetic field.We electrically detect the magnetic ground state and interlayer coupling and observe a fieldinducedmetamagnetic transition.The metamagnetic transition results in magnetoresistances of 95, 300, and 550% for bilayer, trilayer, and tetralayer CrI3 barriers, respectively.We further measure inelastic tunneling spectra for our junctions, unveiling a rich spectrum consistent with collective magnetic excitations (magnons) in CrI3.


Original languageEnglish
Pages (from-to)1218-1222
Number of pages5
Issue number6394
Publication statusPublished - 1 Jan 2018
MoE publication typeA1 Journal article-refereed

ID: 36718448