| Title | Probing magnetism in 2D van der Waals crystalline insulators via electron tunneling |
| Publication Type | Journal Article |
| Year of Publication | 2018 |
| Authors | Klein, DR, MacNeill, D, Lado, JL, Soriano, D, Navarro-Moratalla, E, Watanabe, K, Taniguchi, T, Manni, S, Canfield, P, Fernandez-Rossier, J, Jarillo-Herrero, P |
| Journal | Science |
| Volume | 360 |
| Pagination | 1218 |
| Date Published | 06 |
| Type of Article | Article |
| ISBN Number | 0036-8075 |
| Accession Number | WOS:000435360400050 |
| Keywords | bilayers, field, hall, intrinsic ferromagnetism, junctions, polarization, spin-orbit torques, Technology - Other Topics, zero |
| Abstract | 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 field-induced metamagnetic transition. Themetamagnetic 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. |
| DOI | 10.1126/science.aar3617 |
| Custom 1 | Complex States |
