3 papers
cond-mat.mtrl-sci2026
How Electrons Become Mobile in a Colossal Dielectric -- FeTiO
M. L. McLanahan, A. P. Ramirez
We measure the colossal permittivity in single crystal FeTiO using broadband spectroscopy in the frequency range 20 Hz - 1 MHz. The relaxation response is analyzed using a…
cond-mat.mtrl-sci2026
Suppression of Thermal Conductivity via Singlet-Dominated Scattering in TmFeO
M. L. McLanahan, D. Lederman, A. P. Ramirez
We measured the thermal conductivity of the rare-earth orthoferrites, FeO, where = Eu, Gd, Tb, Dy, Ho, Er, Tm, and Yb from 3 K to 300 K and see an anomalous strong suppr…
cond-mat.mtrl-sci2025
Quantum Spin Relaxation with THz Attempt Frequency in the 1/3-Fire, 2/3-Ice Ferrimagnet SmMnGe
M. L. McLanahan, A. P. Ramirez
Ferrimagnets in which half the spins are disordered and half ordered, so-called half-fire, half-ice state, have been advanced theoretically as a route towards realizing exotic magn…