Tyler Cochran

2 weeks ago | nature.com | Shafayat Hossain |Zahir Muhammad |Zurab Guguchia |Jonas A. Krieger |Yu-Xiao Jiang |Maksim Litskevich | +10 more

AbstractThe interplay between topology and superconductivity generated great interest in condensed matter physics. Here, we unveil an unconventional two-dimensional superconducting state in the Dirac nodal line semimetal ZrAs2 which is exclusively confined to the top and bottom surfaces within the crystal’s ab plane.

3 weeks ago | nature.com | Shafayat Hossain |Yu-Xiao Jiang |Xian Yang |Tyler Cochran |Maksim Litskevich |Byunghoon Brian Kim | +5 more

AbstractChirality, or handedness, is ubiquitous in science, from cell biology to physics, and in condensed matter can underlie exotic phases such as chiral charge density waves and chiral superconductivity. However, detecting subtle broken symmetries that define such states is challenging, leading to debate and controversy. Here, using second-order optical response, we reveal the broken symmetries of a chiral charge density wave in the Kagome lattice KV3Sb5.

Jul 15, 2024 | nature.com | Yu-Xiao Jiang |Julian Ingham |Xian Yang |Byunghoon Brian Kim |Songbo Zhang |Maksim Litskevich | +5 more

AbstractA nematic phase breaks the point-group symmetry of the crystal lattice and is known to emerge in correlated materials. Here we report the observation of an intra-unit-cell nematic order and associated Fermi surface deformation in the kagome metal ScV6Sn6. Using scanning tunnelling microscopy and scanning tunnelling spectroscopy, we reveal a stripe-like nematic order breaking the crystal rotational symmetry within the kagome lattice itself.