Transition from antiferromagnets to altermagnets: Symmetry-breaking theory
Pan Zhou, X. N. Peng, Y. Z. Hu, B. R. Pan, Sijia Liu, Pengbo Lyu, Lizhong Sun
Abstract
Considering the similar real-space configurations of opposite-spin sublattices in antiferromagnets (AFMs) and altermagnets (AMs), the authors establish here a symmetry-based framework for connecting between AFMs and AMs via spin groups. They find that symmetry breaking of combined inversion or translation with time-reversal symmetry will drive AFM-to-AM phase transitions. The authors not only establish a theoretical framework for the transition but also provide practical approaches utilizing the AFMs achievements for 100 years to obtain AMs, significantly expanding the scope of AM materials for both theoretical studies and future practical applications.
Topics & Concepts
Symmetry (geometry)Phase transitionPhysicsScope (computer science)Theoretical physicsCondensed matter physicsSymmetry breakingPoint reflectionSpin (aerodynamics)Computer sciencePhase (matter)Translation (biology)Statistical physicsTransition (genetics)AsymmetryInversion (geology)Physics of Superconductivity and MagnetismMagnetic properties of thin filmsMagnetic and transport properties of perovskites and related materials