Publications

This Review introduces the fundamental properties of the kagome lattice and discusses the complex phenomena observed in several materials systems, including the intertwining of charge order and superconductivity in some kagome metals, the modulation of magnetism and topology in some kagome magnets, and the combination of symmetry breaking and Mott physics in ‘breathing’ kagome insulators.

Yaojia Wang, Heng Wu, Gregory T. McCandless, Julia Y. Chan, Mazhar N. Ali

Nature Reviews Physics 2023

This work reports the electronic properties of the kagome metal Yb0.5Co3Ge3, finding a temperature-dependent kink in resistivity that is commensurate with an in-plane structural distortion. At very low temperatures, anisotropic negative magnetoresistance is observed, which may be related to anisotropic magnetism. This raises questions about the types of distortions in Kagome nets and their resulting physical properties including superconductivity and magnetism.

Yaojia Wang, Gregory T. McCandless, Xiaoping Wang, Kulatheepan Thanabalasingam, Heng Wu, Damian Bouwmeester, Herre S. J. van der Zant, Mazhar N. Ali, Julia Y. Chan

Chemistry of Materials 2022

The superconducting analogue to the semiconducting diode, the Josephson diode, has long been sought with multiple avenues to realisation being proposed by theorists. Showing magnetic-field-free, single-directional superconductivity with Josephson coupling, it would serve as the building block for next-generation superconducting circuit technology.

Heng Wu, Yaojia Wang, Yuanfeng Xu, Pranava K. Sivakumar, Chris Pasco, Ulderico Filippozzi, Stuart S. P. Parkin, Yu-Jia Zeng, Tyrel McQueen, Mazhar N. Ali

Nature 2022