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This content will become publicly available on March 12, 2019

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

We report, for the first time, measurements of the third order, x 3 and fifth order, x 5, susceptibilities in an itinerant oxide metamagnet, Sr 3Ru 2O 7 for magnetic fields both parallel and perpendicular to the c-axis. These susceptibilities exhibit maxima in their temperature dependence such that T 1 ≈ 2T 3 ≈ 4T 5 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 T 1 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:
Grant/Contract Number:
AC02-06CH11357
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)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
OSTI Identifier:
1426769
Alternate Identifier(s):
OSTI ID: 1425524