Quantum Impurity Sensing of Altermagnetic Order

Author(s): V. A. S. V. Bittencourt, Hossein Hosseinabadi, Jairo Sinova, Libor Šmejkal, and Jamir Marino Quantum sensing with individual spin defects has emerged as a versatile platform to probe microscopic properties of condensed matter systems. Here we demonstrate that quantum relaxometry with nitrogen-vacancy (NV) centers in diamond can reveal the anisotropic spin dynamics of altermagnetic insulator… [Phys. Rev. Lett. 136, 146701] Published Wed Apr 08, 2026