In-plane anomalous Hall effect in a low-dimensional system
Source abstract
Abstract
The anomalous Hall effect (AHE) in magnetic systems is typically governed by symmetry constraints that require the Hall response to be proportional to the out-of-plane magnetization component. Here we demonstrate the emergence of an unconventional in-plane AHE in a low-dimensional heterostructure. By interfacing a low-symmetry topological semimetal with a ferromagnetic insulator, we realize a system with reduced symmetry in which only a single mirror plane is preserved. When the magnetization acquires a finite component within this mirror plane, the remaining symmetry is broken, enabling a Hall response that depends on both in-plane and out-of-plane magnetization components. Measurements across multiple devices reveal a gate-tunable AHE, indicating electrostatic control of the underlying mechanisms. A minimal symmetry-constrained microscopic model shows that interfacial spin-orbit coupling and exchange interaction are responsible for the observed multidirectional AHE response. Our work establishes a pathway for engineering tunable, symmetry-driven Hall effects in low-dimensional quantum materials.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Topological Materials and Phenomena · 2D Materials and Applications · Magnetic properties of thin films
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (57)
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