About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Neutron and X-ray Scattering in Materials Science
|
Presentation Title |
Frustration-induced Diffusive Scattering Anomaly and Dimension Change in FeGe2 |
Author(s) |
Yaokun Su, Hillary L. Smith, Matthew B. Stone, Douglas L. Abernathy, Mark D. Lumsden, Carl P. Adams, Chen Li |
On-Site Speaker (Planned) |
Yaokun Su |
Abstract Scope |
Magnetic frustration, arising from the competition of exchange interactions, has received great attention because of its relevance to exotic quantum phenomena in materials. In the current work, we report an unusual checkerboard-shaped scattering anomaly in FeGe2, far from the known incommensurate magnetic satellite peaks, for the first time by inelastic neutron scattering. More surprisingly, such phenomenon appears as spin dynamics at low temperature, but it becomes prominent above Néel transition as elastic scattering. A new model Hamiltonian that includes an intraplane next-nearest neighbor was proposed and such anomaly is attributed to the near-perfect magnetic frustration and the emergence of unexpected two-dimensional magnetic order in the quasi-one-dimensional FeGe2. |
Proceedings Inclusion? |
Planned: |
Keywords |
Magnetic Materials, Computational Materials Science & Engineering, Other |