Effect on the Electronic and Magnetic Properties of Antiferromagnetic Topological Insulator MnBiTe with Sn Doping
arXiv:2207.13595 · doi:10.1016/j.physb.2023.414799
Abstract
We thoroughly investigate the effect of nonmagnetic Sn doping on the electronic and magnetic properties of antiferromagnetic topological insulator MnBiTe. We observe that Sn doping reduces the out-of-plane antiferromagnetic (AFM) interactions in MnBiTe up to 68\% of Sn concentration and above the system is found to be paramagnetic. In this way, the anomalous Hall effect observed at a very high field of 7.8 T in MnBiTe is reduced to 2 T with 68\% of Sn doping. Electrical transport measurements suggest that all compositions are metallic in nature, while the low-temperature resistivity is sensitive to the AFM ordering and to the doping-induced disorder. Hall effect study demonstrates that Sn actually dopes electrons into the system, thus, enhancing the electron carrier density almost by two orders at 68\% of Sn. In contrast, SnBiTe is found to be a p-type system. Angle-resolved photoemission spectroscopy (ARPES) studies show that the topological properties are intact at least up to 55\% of Sn as the Dirac surface states are present in the valance band, but in SnBiTe we are unable to detect the topological states due to heavy hole doping. Overall, Sn doping significantly affects the electronic and magnetic properties of MnBiTe.
arXiv comment8 pages and 6 figures
References in corpus (27)
- Topological insulators and superconductors
- Electronic Structure of Pyrochlore Iridates: From Topological Dirac Metal to Mott Insulator
- Experimental Observation of the Quantum Anomalous Hall Effect in a Magnetic Topological Insulator
- Quantized Anomalous Hall Effect in Magnetic Topological Insulators
- Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBiTe
- Prediction and observation of the first antiferromagnetic topological insulator
- High-precision realization of robust quantum anomalous Hall state in a hard ferromagnetic topological insulator
- Topological axion states in magnetic insulator MnBiTe with the quantized magnetoelectric effect
- Robust axion insulator and Chern insulator phases in a two-dimensional antiferromagnetic topological insulator
- Experimental realization of an intrinsic magnetic topological insulator
- Antiferromagnetic topological insulators
- Evidence for Magnetic Weyl Fermions in a Correlated Metal
- Dynamical Axion Field in Topological Magnetic Insulators
- Quantum Anomalous Hall Effect in 2D Organic Topological Insulators
- Crystal growth and magnetic structure of MnBi2Te4
- Gapless surface Dirac cone in antiferromagnetic topological insulator MnBiTe
- Topological Electronic Structure and Its Temperature Evolution in Antiferromagnetic Topological Insulator MnBi2Te4
- Intrinsic magnetic topological insulator phases in the Sb doped MnBi2Te4 bulks and thin flakes
- Chemical Aspects of the Antiferromagnetic Topological Insulator MnBiTe
- Spin scattering and noncollinear spin structure-induced intrinsic anomalous Hall effect in antiferromagnetic topological insulator
- Natural van der Waals heterostructural single crystals with both magnetic and topological properties
- Evolution of structural, magnetic and transport properties in MnBi2-xSbxTe4
- Antiferromagnetic Topological Insulator MnBi2Te4: Synthesis and Magnetic properties
- Topological States in Ferromagnetic CdO/EuO Superlattices and Quantum Wells
- Meta-magnetism of weakly-coupled antiferromagnetic topological insulators
- Origins of electronic bands in antiferromagnetic topological insulator MnBiTe
- Magnetic dilution effect and topological phase transitions in (MnPb)BiTe