Nonlinear Pauli susceptibilities in ${\mathrm{Sr}}_3{\mathrm{Ru}}_2{\mathrm{O}}_7$ and universal features of itinerant metamagnetism

Journal Article · Mon Mar 12 04:00:00 UTC 2018 · Physical Review B

DOI: https://doi.org/10.1103/PhysRevB.97.100403 · OSTI ID:1426769

Shivaram, B. S. ^[1]; Luo, Jing ^[1]; Chern, Gia-Wei ^[1]; Phelan, Daniel ^[2]; Fittipaldi, R. ^[3]; Vecchione, A. ^[3]

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1. Univ. of Virginia, Charlottesville, VA (United States)
2. Argonne National Lab. (ANL), Argonne, IL (United States)
3. Univ. di Salerno (Italy)

We report, for the first time, measurements of the third order, x₃ and fifth order, x₅, susceptibilities in an itinerant oxide metamagnet, Sr₃Ru₂O₇ for magnetic fields both parallel and perpendicular to the c-axis. These susceptibilities exhibit maxima in their temperature dependence such that T₁ ≈ 2T₃ ≈ 4T₅ where the T_i are the position in temperature where a peak in the i-th order susceptibility occurs. These features taken together with the scaling of the critical field with the temperature T₁ observed in a diverse variety of itinerant metamagnets find a natural explanation in a single band model with one Van Hove singularity (VHS) and onsite repulsion U. The separation of the VHS from the Fermi energy V, sets a single energy scale, which is the primary driver for the observed features of itinerant metamagnetism at low temperatures.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
• Grant/Contract Number: AC02-06CH11357
• OSTI ID: 1426769
• Journal Information: Physical Review B, Journal Name: Physical Review B Journal Issue: 10 Vol. 97; ISSN 2469-9950; ISSN PRBMDO
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English

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37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY