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Title: Nonlinear Pauli susceptibilities in Sr 3 Ru 2 O 7 and universal features of itinerant metamagnetism

Abstract

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 Ti 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.

Authors:
 [1];  [1];  [1];  [2];  [3];  [3]
  1. Univ. of Virginia, Charlottesville, VA (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Univ. di Salerno (Italy)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1426769
Alternate Identifier(s):
OSTI ID: 1425524
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 10; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Shivaram, B. S., Luo, Jing, Chern, Gia-Wei, Phelan, Daniel, Fittipaldi, R., and Vecchione, A. Nonlinear Pauli susceptibilities in Sr3Ru2O7 and universal features of itinerant metamagnetism. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.97.100403.
Shivaram, B. S., Luo, Jing, Chern, Gia-Wei, Phelan, Daniel, Fittipaldi, R., & Vecchione, A. Nonlinear Pauli susceptibilities in Sr3Ru2O7 and universal features of itinerant metamagnetism. United States. https://doi.org/10.1103/PhysRevB.97.100403
Shivaram, B. S., Luo, Jing, Chern, Gia-Wei, Phelan, Daniel, Fittipaldi, R., and Vecchione, A. Mon . "Nonlinear Pauli susceptibilities in Sr3Ru2O7 and universal features of itinerant metamagnetism". United States. https://doi.org/10.1103/PhysRevB.97.100403. https://www.osti.gov/servlets/purl/1426769.
@article{osti_1426769,
title = {Nonlinear Pauli susceptibilities in Sr3Ru2O7 and universal features of itinerant metamagnetism},
author = {Shivaram, B. S. and Luo, Jing and Chern, Gia-Wei and Phelan, Daniel and Fittipaldi, R. and Vecchione, A.},
abstractNote = {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 Ti 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.},
doi = {10.1103/PhysRevB.97.100403},
journal = {Physical Review B},
number = 10,
volume = 97,
place = {United States},
year = {Mon Mar 12 00:00:00 EDT 2018},
month = {Mon Mar 12 00:00:00 EDT 2018}
}

Journal Article:

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Cited by: 1 work
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Figures / Tables:

FIG. 1 FIG. 1: The magnetization isotherms for B perpendicular to the c-axis plotted as per Eq. (1) for various temperatures as indicated. Since the slope yields χ3 in such a plot it is immediately seen that χ3 is weakly negative at high temperatures, T > 20 K, turns positive as Tmore » is lowered reaching a maximum around 10 K and decreasing thereafter. Also noticeable between 3 K and 8 K is the positive curvature which implies a non-zero (+ve) value for the next higher susceptibility, χ5.« less

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Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.