Science42 mOctober 7, 2026, 11:13

Physicists Identify Chiral Parent State of Kagome Superconductors

A study in Nature Communications reports the discovery of a multiorbital chiral-nematic Fermi liquid as the parent state of kagome superconductors in CsV₃₋ₓTiₓSb₅, spontaneously breaking mirror symmetry and passing chirality to both the charge density wave and superconductivity. Titanium doping at x = 0.15 suppressed the CDW, and SI-STM at 0.4 K revealed broken mirror and rotational symmetry.

Tech Times

Open source

Physicists Identify Chiral Parent State of Kagome Superconductors

Chiral-nematic Fermi liquid breaks all mirror symmetry planes within kagome layers
Titanium doping at x = 0.15 fully suppresses the 94 K charge density wave transition
SI-STM at 0.4 K showed differing lengths and intensities of three scattering wavevectors
Chiral mass renormalization of vanadium d-orbital electrons reaches 1.63–2.35 by direction

Two Laser Pulses Unlock Electron States Physicists Had Never Reached

Science

Physicists create 3D light field to reach previously inaccessible electron quantum states

Science

First type I superconductor breaking time-reversal symmetry discovered

Science

Physicists Identify Chiral Parent State of Kagome Superconductors

Two Laser Pulses Unlock Electron States Physicists Had Never Reached

Physicists create 3D light field to reach previously inaccessible electron quantum states

First type I superconductor breaking time-reversal symmetry discovered

Picosecond pulses push superconductors past critical-current limit