Ambi-chiral anomalous Hall effect in magnetically doped topological insulators

Abstract

The chirality associated with broken time reversal symmetry in magnetically doped topological insulators has important implications to the quantum transport phenomena. Here we report the anomalous Hall effect studies in Mn- and Cr-doped Bi${}_2$Te${}_3$ topological insulators with varied thickness and doping content. By tracing the chirality of the Hall loops, we find that the Mn-type anomalous Hall effect with clockwise chirality is strengthened by the reduction of film thickness, which is opposite to that of the Cr-type anomalous Hall effect with counterclockwise chirality. We provide a phenomenological model to explain the evolution of magnetic order and anomalous Hall effect chirality in magnetically doped topological insulators.

11 pages, 5 figures

References in corpus (18)

• Topological Field Theory of Time-Reversal Invariant Insulators
• Quantized Anomalous Hall Effect in Magnetic Topological Insulators
• High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator
• Quantum Anomalous Hall Effect in Hg${}_{1-y}$Mn${}_y$Te Quantum Wells
• Trajectory of Anomalous Hall Effect toward the Quantized State in a Ferromagnetic Topological Insulator
• Scale-Invariant Dissipationless Chiral Transport in Magnetic Topological Insulators beyond the Two-Dimensional Limit
• The development of ferromagnetism in the doped topological insulator Bi2-xMnxTe3
• Surface quantized anomalous Hall current and magneto-electric effect in magnetically disordered topological insulators
• Tailoring tricolor structure of magnetic topological insulator for robust axion insulator
• Interplay between ferromagnetism, surface states, and quantum corrections in a magnetically doped topological insulator
• Review of experiments on the chiral anomaly in Dirac-Weyl semimetals
• Dimensional Crossover Induced Topological Hall Effect in a Magnetic Topological Insulator
• Surface magnetic ordering in topological insulators with bulk magnetic dopants
• Scaling of the Quantum Anomalous Hall Effect as an Indicator of Axion Electrodynamics
• Experimental Verification of Van Vleck Nature of Long-Range Ferromagnetic Order in Vanadium-Doped Three-Dimensional Topological Insulator Sb${}_2$Te${}_3$
• Signatures of Dirac fermion-mediated magnetic order
• Electrically tuned magnetic order and magnetoresistance in a topological insulator
• Spectroscopic perspective on the interplay between electronic and magnetic properties of magnetically doped topological insulators

Cited by in corpus (1)

• Fabrication-induced even-odd discrepancy of magnetotransport in few-layer MnBi${}_2$Te${}_4$