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Effects of pressure on the ferromagnetic state of the charge density wave compound SmNiC2

Title
Effects of pressure on the ferromagnetic state of the charge density wave compound SmNiC2
Authors
Woo, B.Seo, S.Park, E.Kim, J. H.Jang, D.Park, T.Lee, H.Ronning, F.Thompson, J. D.Sidorov, V. A.Kwon, Y. S.
DGIST Authors
Kwon, Y. S.
Issue Date
2013-03-14
Citation
Physical Review B: Condensed Matter and Materials Physics, 87(12)
Type
Article
Article Type
Article
ISSN
1098-0121
Abstract
We report the pressure response of charge-density-wave (CDW) and ferromagnetic (FM) phases of the rare-earth intermetallic SmNiC2 up to 5.5 GPa. The CDW transition temperature (TCDW), which is reflected as a sharp inflection in the electrical resistivity, is almost independent of pressure up to 2.18 GPa but is strongly enhanced at higher pressures, increasing from 155.7 K at 2.2 GPa to 279.3 K at 5.5 GPa. Commensurate with the sharp increase in TCDW, the first-order FM phase transition, which decreases with applied pressure, bifurcates into the upper (TM1) and lower (Tc) phase transitions and the lower transition changes its nature to second order above 2.18 GPa. Enhancement both in the residual resistivity and the Fermi-liquid T2 coefficient A near 3.8 GPa suggests abundant magnetic quantum fluctuations that arise from the possible presence of a FM quantum critical point. © 2013 American Physical Society.
URI
http://hdl.handle.net/20.500.11750/5319
DOI
10.1103/PhysRevB.87.125121
Publisher
American Physical Society
Related Researcher
  • Author Kwon, Yong Seung Quantum Functional Materials Laboratory
  • Research Interests High Tc Superconductors and magnetic materials; Thermoelectric Materials
Files:
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Collection:
Department of Emerging Materials ScienceQuantum Functional Materials Laboratory1. Journal Articles


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