Related Experiment Video
Updated: May 28, 2026

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
Published on: October 12, 2019
Unconventional Zero-Field-Cooling Exchange Bias in 2D Van der Waals Magnetic Heterostructures
Qitao Jiang1, Zhu Ma1, Wuhong Xue1,2
1Key Laboratory of Magnetic Molecules and Magnetic Information Materials of Ministry of Education, School of Materials Science and Engineering, Shanxi Normal University, Taiyuan 030031, China.
None:
Exchange bias (EB) in two-dimensional van der Waals (vdW) ferromagnetic (FM)/antiferromagnetic (AFM) heterostructures holds great potential for advancing the applications of spintronic devices thanks to their defect-free and atomically flat interfaces. Normally, a field-cooling process is needed to either trigger or sustain the EB effect. Here we report a sizable EB effect in the Fe3GaTe2/CrSBr vdW heterostructure in a zero-field cooling process. Remarkably, an exceptionally large EB field (HEB) of 130.1 mT was achieved in Fe3GaTe2/CrSBr at 5 K, even though the spin configuration in Fe3GaTe2 and CrSBr is orthogonally arranged. Additionally, the HEB of Fe3GaTe2/CrSBr exhibits pronounced nonmonotonic and asymmetric dependence on the cooling field, with the maximum values appearing at intermediate field strength. The EB is effectively tuned by the thickness of the FM layer relative to that of the AFM layer, identifying this ratio as an additional important governing parameter. Our work suggests an unconventional mechanism of EB in vdW heterostructures, providing an innovative route for fabricating low-power and robust 2D spintronic devices.
Related Concept Videos
Biasing of Metal-Semiconductor Junctions
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...
Ferromagnetism
Magnetostatic Boundary Conditions
The Hall Effect
Magnetic Field due to Moving Charges
Consider a point charge moving with a constant velocity. Like the electric field, the magnetic field at any point is directly proportional to the magnitude of the charge and inversely proportional to the square of the distance between the source point and the field point. However, unlike the electric field, the magnetic field is always perpendicular to the plane containing the line...
Electrostatic Boundary Conditions in Dielectrics
Consider a case where both the mediums across a boundary are two different dielectric materials. Recall that the electric field and electric displacement are proportional and related through the material's permittivity.

