Discovery of a Magnetic Dirac System with a Large Intrinsic Nonlinear Hall Effect
- CNR-IOM TASC Laboratory, Area Science Park, 34149Trieste, Italy, Department of Molecular Sciences and Nanosystems, Ca’ Foscari University of Venice, 30172Venice, Italy
- Department of Physics, Northeastern University, Boston, Massachusetts02115, United States
- CNR-IOM TASC Laboratory, Area Science Park, 34149Trieste, Italy
- Department of Physics, University of Arkansas, Fayetteville, Arkansas72701, United States
- University of Milano, 20133Milano, Italy
- Departamento de Física de la Materia Condensada, Universidad Autónoma de Madrid, 28049Madrid, Spain, Instituto “Nicolás Cabrera” and Condensed Matter Physics Center (IFIMAC), Universidad Autónoma de Madrid, 28049Madrid, Spain
- Department of Physics, Indian Institute of Technology Kanpur, Kanpur208016, India
- Department of Physical and Chemical Sciences, University of L’Aquila, Via Vetoio, 67100L’Aquila, Italy
Magnetic materials exhibiting topological Dirac fermions are attracting significant attention for their promising technological potential in spintronics. In these systems, the combined effect of the spin-orbit coupling and magnetic order enables the realization of novel topological phases with exotic transport properties, including the anomalous Hall effect and magneto-chiral phenomena. Furthermore, we report experimental evidence of topological Dirac antiferromagnetism in TaCoTe2 via angle-resolved photoelectron spectroscopy (ARPES) and first-principles density functional theory (DFT) calculations. In particular, we find the existence of spin-orbit coupling-induced gaps at the Fermi level, consistent with the manifestation of a large intrinsic non-linear Hall conductivity. Remarkably, we find that the latter is extremely sensitive to the orientation of the N´eel vector, suggesting TaCoTe2 a suitable candidate for the realization of non-volatile spintronic devices with an unprecedented level of intrinsic tunability.
- Research Organization:
- Univ. of Arkansas, Fayetteville, AR (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0022006
- OSTI ID:
- 1967523
- Alternate ID(s):
- OSTI ID: 1975856
- Journal Information:
- Nano Letters, Journal Name: Nano Letters Vol. 23 Journal Issue: 3; ISSN 1530-6984
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Similar Records
Hall effect for Dirac electrons in graphene exposed to an Abrikosov flux lattice
Large intrinsic anomalous Hall effect in SrIrO3 induced by magnetic proximity effect