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Title: Frustrated magnetism in the spin–chain metal Yb 2Fe 12P 7

Here, magnetization measurements for magnetic fields $${{\mu}_{0}}H$$ up to 60 T are reported for the noncentrosymmetric spin–chain metal Yb 2Fe 12P 7. These measurements reveal behavior that is consistent with Ising-like spin chain magnetism that produces pronounced spin degeneracy. In particular, we find that although a Brillouin field dependence is observed in M( H) for $$H\bot ~c$$ with a saturation moment that is close to the expected value for free ions of Yb 3+, non-Brillouin-like behavior is seen for $$H~\parallel ~c$$ with an initial saturation moment that is nearly half the free ion value. In addition, hysteretic behavior that extends above the ordering temperature $${{T}_{\text{M}}}$$ is seen for $$H~\parallel ~c$$ but not for $$H~\bot ~c$$ , suggesting out-of-equilibrium physics. This point of view is strengthened by the observation of a spin reconfiguration in the ordered state for $$H~\parallel ~c$$ which is only seen for $$T\leqslant {{T}_{\text{M}}}$$ and after polarizing the spins. Together with the heat capacity data, these results suggest that the anomalous low temperature phenomena that were previously reported are driven by spin degeneracy that is related to the Ising-like one dimensional chain-like configuration of the Yb ions.
Authors:
 [1] ;  [2] ; ORCiD logo [3] ; ORCiD logo [4] ;  [5]
  1. Univ. of California, San Diego, La Jolla, CA (United States); Florida State Univ., Tallahassee, FL (United States)
  2. Univ. of California, San Diego, La Jolla, CA (United States); Univ. of Florida, Gainesville, FL (United States)
  3. Univ. of California, San Diego, La Jolla, CA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Univ. of California, San Diego, La Jolla, CA (United States)
Publication Date:
Report Number(s):
LA-UR-17-23579
Journal ID: ISSN 0953-8984
Grant/Contract Number:
AC52-06NA25396; FG02-04ER46105; DE FG02-04ER46178
Type:
Accepted Manuscript
Journal Name:
Journal of Physics. Condensed Matter
Additional Journal Information:
Journal Volume: 28; Journal Issue: 4; Journal ID: ISSN 0953-8984
Publisher:
IOP Publishing
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22); USDOE
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; material science; ytterbium; magnetism; pulsed magnetic field
OSTI Identifier:
1414155
Alternate Identifier(s):
OSTI ID: 1238848