The quantum anomalous Hall effect introduces a dissipationless edge current without an external magnetic field, offering opportunities for low-power electronics and a platform for harnessing quantum phenomena. Although this phenomenon has been observed in several materials, including magnetic-doped topological insulators, the topological antiferromagnet MnBi2Te4, multilayer graphene, and twisted 2D materials, the magnetic transition temperature remains low in these systems. Exploring novel materials with a non-zero Chern number and a magnetic phase at high temperatures is both crucial and challenging. Here, we propose an approach to induce nontrivial bands with nonzero Chern numbers by leveraging strong spin–orbit coupling in magnetic-doped transition metal dichalcogenides. We demonstrate that a doped state near the valence-band edge induces band crossing with the hybridized host band, leading to topologically non-trivial properties. Calculations for V-doped WSe2 and WS2 confirm this mechanism. The coexistence of magnetic order and nontrivial topology in these systems offers a promising platform for exploring the quantum anomalous Hall effect at high temperatures.
Over the last decades, condensed matter physics has been the playground for the realization of physical systems in which quantum effects persist over a wide range of energy and length scales. The resulting quantum materials include topological insulators, topological crystalline insulators, magnetically doped topologic...
A. Bonanni· Low-Dimensional Materials an...· 0 citations
Since its experimental discovery as an intrinsic antiferromagnetic topological insulator in 2019, the MnBi2Te4 family of materials has greatly propelled the development of condensed matter physics over the past several years. This family naturally integrates long-range magnetic order with topological band structure wit...
Liang-Cai Xu, Yue-Tan Li, Zi-Chen Lian et al.· Journal of Physics: Condense...· 0 citations
Interfacing two-dimensional bismuth with a magnetic substrate has been proposed as a promising route for exploring magnetically tunable topological states. Here, we report the experimental realization of epitaxial bismuthene-magnetic insulator heterostructure by growing ultrathin Bi films on ferromagnetic EuO(111). T...
Subham Naskar, G. Sharma, Sujit Manna· 2D Materials· 0 citations
The search for materials exhibiting a large bulk photovoltaic effect has recently expanded to low-band-gap systems capable of operating in the infrared regime, with potential applications in optoelectronics. Among the microscopic mechanisms contributing to this phenomenon, the shift current is one of the dominant sourc...
Michele Bagaglini, Mattia Iannetti, Jonas Erhardt et al.· 0 citations
Chiral anomaly in topological materials manifests as negative longitudinal magnetoresistance, yet the tunability and evolution of this effect remain elusive. Here we show that doped tellurium serves as a versatile platform to realize a giant negative longitudinal magnetoresistance that is highly tunable via the Fermi l...
Zhi-Feng Xue, Jia-Jie Zhao, Yi Ji et al.· Communications Physics· 0 citations
Achieving topological superconductivity is a key goal in quantum physics, offering a path to fault-tolerant quantum computers. A central challenge in this field is to continuously drive a material through a topological quantum phase transition to directly observe the evolution from trivial to topological superconductiv...
Hugo Le Du, Robin Salvatore, Justine Cordiez et al.· 0 citations
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