Probing the extended non-Fermi liquid regimes of MnSi and Fe

P. Pedrazzini, D. Jaccard, G. Lapertot, J. Flouquet, Yoshihiko Inada, H. Kohara, Y. Onuki

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Recent studies show that the non-Fermi liquid (NFL) behavior of MnSi and Fe spans over an unexpectedly broad pressure range, between the critical pressure pc and around 2 pc. In order to determine the extension of their NFL regions, we analyze the evolution of the resistivity ρ ( T ) ∼ A ( p ) Tn at higher pressures. We find that in MnSi the n = frac(3, 2) exponent holds below 4.8 GPa ≈ 3 pc, but it increases above that pressure. At 7.2 GPa we observe the low-temperature Fermi liquid exponent n = 2 whereas for T > 1.5 K, n = frac(5, 3). Our measurements in Fe show that the NFL behavior ρ ∼ T5 / 3 extends at least up to 30.5 GPa, above the entire superconducting (SC) region. In the studied pressure range, the onset of the SC transition reduces by a factor 10 down to Tconset ( 30.5 GPa ) = 0.23 K, while the A-coefficient diminishes monotonically by around 50%.

Original languageEnglish
Pages (from-to)165-166
Number of pages2
JournalPhysica B: Condensed Matter
Volume378-380
Issue numberSPEC. ISS.
DOIs
Publication statusPublished - May 1 2006
Externally publishedYes

Fingerprint

Liquids
liquids
exponents
critical pressure
Fermi liquids
electrical resistivity
coefficients
Temperature

Keywords

  • Fe
  • Ferromagnetism
  • MnSi
  • Non-Fermi liquids
  • Unconventional superconductivity

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Pedrazzini, P., Jaccard, D., Lapertot, G., Flouquet, J., Inada, Y., Kohara, H., & Onuki, Y. (2006). Probing the extended non-Fermi liquid regimes of MnSi and Fe. Physica B: Condensed Matter, 378-380(SPEC. ISS.), 165-166. https://doi.org/10.1016/j.physb.2006.01.062

Probing the extended non-Fermi liquid regimes of MnSi and Fe. / Pedrazzini, P.; Jaccard, D.; Lapertot, G.; Flouquet, J.; Inada, Yoshihiko; Kohara, H.; Onuki, Y.

In: Physica B: Condensed Matter, Vol. 378-380, No. SPEC. ISS., 01.05.2006, p. 165-166.

Research output: Contribution to journalArticle

Pedrazzini, P, Jaccard, D, Lapertot, G, Flouquet, J, Inada, Y, Kohara, H & Onuki, Y 2006, 'Probing the extended non-Fermi liquid regimes of MnSi and Fe', Physica B: Condensed Matter, vol. 378-380, no. SPEC. ISS., pp. 165-166. https://doi.org/10.1016/j.physb.2006.01.062
Pedrazzini P, Jaccard D, Lapertot G, Flouquet J, Inada Y, Kohara H et al. Probing the extended non-Fermi liquid regimes of MnSi and Fe. Physica B: Condensed Matter. 2006 May 1;378-380(SPEC. ISS.):165-166. https://doi.org/10.1016/j.physb.2006.01.062
Pedrazzini, P. ; Jaccard, D. ; Lapertot, G. ; Flouquet, J. ; Inada, Yoshihiko ; Kohara, H. ; Onuki, Y. / Probing the extended non-Fermi liquid regimes of MnSi and Fe. In: Physica B: Condensed Matter. 2006 ; Vol. 378-380, No. SPEC. ISS. pp. 165-166.
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