Metal-insulator transition in Fe-doped type-II Weyl semimetal WTe₂

 The metal-insulator transition (MIT) has been a subject of intensive study in condensed matter physics for decades, providing opportunities to study fundamental physics as well as develop novel switching devices based on multiple resistance states. Doping has been known as an effective tunable parameter to manipulate the MITs. Here we report the Fe doping in WTe₂. We characterized the structure, transport, and thermodynamic properties of Fe-doped WTe₂ single crystals, and found signatures of Kondo localization and MIT. Therefore, this material system offers a fascinating platform to explore emergent quantum phenomenon introduced by magnetic doping in a Weyl semimetal.