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Joel Helton, Nicholas P. Butch, Daniel M. Pajerowski, Sergei N. Barilo, Jeffrey W. Lynn
Time-of-flight neutron spectroscopy reveals spin waves in the ferromagnetic ground state of the kagome staircase material Co32V2O8. While previous work has
Joel Helton, Yang Zhao, Dmitry A. Shulyatev, Jeffrey W. Lynn
Neutron spectroscopy is used to probe transverse acoustic phonons near the (2,2,0) Bragg position in colossal magnetoresistive La0.7Ca0.3MnO3. Upon warming to
Joel Helton, Susumu K. Jones, Daniel E Parshall, Matthew B. Stone, Dmitry A. Shulyatev, Jeffrey W. Lynn
While the spin dynamics of La0.7Cad0.3MnO3 in the ferromagnetic phase are known to be unconventional, previous measurements have yielded contradictory results
Tian-Heng Han, M. R. Norman, J.-J. Wen, Jose Rodriguez Rivera, Joel Helton, Collin L. Broholm, Young S. Lee
New low energy inelastic neutron scattering data on the kagome spin liquid ZnCu3(OD)6Cl2 (Herbertsmithite) reveals diffuse spots near wavevectors (100) and 003
Robin Michael Daub Chisnell, Joel Helton, D. E. Freedman, D. K. Singh, F. Demmel, Chris Stock, D. G. Nocera, Y. S. Lee
Topological magnon insulators are a new class of magnetic materials that posses topologically nontrivial magnon bands. As a result, magnons in these materials