Antichiral spin order, its soft modes, and their hybridization with phonons in the topological semimetal <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:msub><mml:mrow><mml:mi>Mn</mml:mi></mml:mrow><mml:mn>3</mml:mn></mml:msub><mml:mi>Ge</mml:mi></mml:math>
Yu Chen, Jonathan Gaudet, Sayak Dasgupta, Guy Marcus, Jiao Lin, Taishi Chen, Takahiro Tomita, M. Ikhlas, Yang Zhao, Wangchun Chen, M. B. Stone, Oleg Tchernyshyov, Satoru Nakatsuji, C. Broholm
Abstract
The antichiral spin structure of Mn${}_{3}$Ge and its low-energy excitations are determined using neutron scattering techniques. The authors use a field-theoretical approach in order to derive the relevant spin Hamiltonian, which accounts for the spin order and low-energy excitations in this material. Two magnetoelastic modes were identified, indicating an intimate relationship between strain, magnetism, and transport in Mn${}_{3}$Ge.
Topics & Concepts
Order (exchange)SemimetalComputer sciencePhysicsCondensed matter physicsEconomicsBand gapFinanceTopological Materials and PhenomenaMagnetic properties of thin filmsMagnetic and transport properties of perovskites and related materials