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

被引：776

作者：

Klein, D. R. ^{[1
]}

MacNeill, D. ^{[1
]}

Lado, J. L. ^{[2
,3
]}

Soriano, D. ^{[2
]}

Navarro-Moratalla, E. ^{[4
]}

Watanabe, K. ^{[5
]}

Taniguchi, T. ^{[5
]}

Manni, S. ^{[6
,7
,8
]}

Canfield, P. ^{[6
,7
]}

Fernandez-Rossier, J. ^{[2
]}

Jarillo-Herrero, P. ^{[1
]}

机构：

[1] MIT, Dept Phys, Cambridge, MA 02139 USA

[2] Int Iberian Nanotechnol Lab, QuantaLab, P-4715310 Braga, Portugal

[3] Swiss Fed Inst Technol, Inst Theoret Phys, CH-8093 Zurich, Switzerland

[4] Univ Valencia, Inst Ciencia Mol, Paterna 46980, Spain

[5] Natl Inst Mat Sci, Tsukuba, Ibaraki, Japan

[6] Iowa State Univ, US DOE, Ames Lab, Ames, IA 50011 USA

[7] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA

[8] Tata Inst Fundamental Res, Dept Condensed Matter Phys & Mat Sci, Bombay 400005, Maharashtra, India

来源：

SCIENCE | 2018年 / 360卷 / 6394期

关键词：

SPIN-ORBIT TORQUES; INTRINSIC FERROMAGNETISM; FIELD; JUNCTIONS; ZERO; POLARIZATION; BILAYERS; HALL;

D O I：

10.1126/science.aar3617

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：1218 / +

页数：5

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