Spiral order from orientationally correlated random bonds in classical <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>X</mml:mi><mml:mi>Y</mml:mi></mml:mrow></mml:math> models
Andrea Scaramucci, Hiroshi Shinaoka, Maxim V. Mostovoy, Rui Lin, Christopher Mudry, Markus Müller
Abstract
The authors show that spin-spiral states can be induced at high temperatures by frustrating impurities. The stronger the disorder the higher the ordering temperature ${T}_{\mathrm{spiral}}$, and the larger the spiral wavevector ${q}_{G}$. The ratio ${T}_{\mathrm{spiral}}/{q}_{G}$ is shown to be independent of impurity concentration and in agreement with experimental results in perovskites.
Topics & Concepts
Condensed matter physicsOrder (exchange)PhysicsSpiral (railway)ImpurityWave vectorMaterials scienceChemistryPhase diagramWork (physics)Statistical physicsThermodynamicsPhase (matter)Random phase approximationPhysics of Superconductivity and MagnetismAdvanced Condensed Matter PhysicsTheoretical and Computational Physics