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

Journal Article · · Physical Review B
 [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)

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.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1426769
Alternate ID(s):
OSTI ID: 1425524
Journal Information:
Physical Review B, Vol. 97, Issue 10; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

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Figures / Tables (7)


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