Kondo physics in antiferromagnetic Weyl semimetal Mn3+xSn1-x films

Abstract

Topology and strong electron correlations are crucial ingredients in emerging quantum materials, yet their intersection in experimental systems has been relatively limited to date. Strongly correlated Weyl semimetals, particularly when magnetism is incorporated, offer a unique and fertile platform to explore emergent phenomena in novel topological matter and topological spintronics. The antiferromagnetic Weyl semimetal Mn3Sn exhibits many exotic physical properties such as a large spontaneous Hall effect and has recently attracted intense interest. In this work, we report synthesis of epitaxial Mn3+xSn1-x films with greatly extended compositional range in comparison with that of bulk samples. As Sn atoms are replaced by magnetic Mn atoms, the Kondo effect, which is a celebrated example of strong correlations, emerges, develops coherence, and induces a hybridization energy gap. The magnetic doping and gap opening lead to rich extraordinary properties as exemplified by the prominent DC Hall effects and resonance-enhanced terahertz Faraday rotation.

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Cited by in corpus (13)

• Quantum sensing and imaging of spin-orbit-torque-driven spin dynamics in noncollinear antiferromagnet Mn3Sn
• Time-dependent multistate switching of topological antiferromagnetic order in Mn${}_3$Sn
• Giant intrinsic anomalous terahertz Faraday rotation in the magnetic Weyl semimetal Co${}_2$MnGa at room temperature
• Ultrafast Dynamics of Intrinsic Anomalous Hall Effect in the Topological Antiferromagnet Mn3Sn
• Nanoscale magnetic domains in polycrystalline Mn3Sn films imaged by a scanning single-spin magnetometer
• Maximizing intrinsic anomalous Hall effect by controlling the Fermi level in simple Weyl semimetal films
• Magnetic moment preservation and emergent Kondo resonance of Co-phthalocyanine on semimetallic Sb(111)
• Epitaxial growth of high quality $M{n}_{3}Sn$ thin films by pulsed laser deposition
• Higher order exchange driven noncoplanar magnetic state and large anomalous Hall effects in electron doped kagome magnet Mn${}_3$Sn
• Intertwined Charge and Spin Density Waves in a Topological Kagome Material
• Large Nernst Effect in a layered metallic antiferromagnet EuAl${}_2$Si${}_2$
• Concurrence of directional Kondo transport and incommensurate magnetic order in the layered material AgCrSe${}_2$
• Mott-Derived Local Moments and Kondo Hybridization in a d-electron Kagome lattice