Abstract
We report measurements of the third order, , and fifth order, , susceptibilities in an itinerant oxide metamagnet, , for magnetic fields both parallel and perpendicular to the axis. These susceptibilities exhibit maxima in their temperature dependence such that where is the position in temperature where a peak in the susceptibility occurs. These features taken together with the scaling of the critical field with the temperature observed in a diverse variety of itinerant metamagnets find a natural explanation in a single-band model with one Van Hove singularity (VHS) and on-site repulsion . The separation of the VHS from the Fermi energy , sets a single energy scale, which is the primary driver for the observed features of itinerant metamagnetism at low temperatures.
- Received 1 December 2017
DOI:https://doi.org/10.1103/PhysRevB.97.100403
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