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Title: Non-Fermi liquid behavior close to a quantum critical point in a ferromagnetic state without local moments

Abstract

A quantum critical point (QCP) occurs upon chemical doping of the weak itinerant ferromagnet Sc₃̣₁ In. Remarkable for a system with no local moments, the QCP is accompanied by non-Fermi liquid behavior, manifested in the logarithmic divergence of the specific heat both in the ferro-and the paramagnetic states, as well as linear temperature dependence of the low-temperature resistivity. With doping, critical scaling is observed close to the QCP, as the critical exponents δ, γ, and β have weak composition dependence, with δ nearly twice and β almost half of their respective mean-field values. The unusually large paramagnetic moment μ PM ~ 1.3 μB/F:U: is nearly composition independent. Evidence for strong spin fluctuations, accompanying the QCP at x c – 0.035 ± 0.005, may be ascribed to the reduced dimensionality of Sc₃̣₁ In, associated with the nearly one-dimensional Sc-In chains.

Authors:
 [1];  [2];  [2];  [3];  [4];  [2];  [5];  [5];  [5];  [6];  [6];  [4];  [3];  [2];  [1]
  1. Rice Univ., Houston, TX (United States)
  2. Columbia Univ., New York, NY (United States)
  3. Univ. of California, San Diego, La Jolla, CA (United States)
  4. Florida State Univ., Tallahassee, FL (United States)
  5. McMaster Univ., Hamilton, ON (Canada)
  6. Chinese Academy of Sciences (CAS), Beijing (China)
Publication Date:
Research Org.:
Florida State Univ., Tallahassee, FL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1181592
Alternate Identifier(s):
OSTI ID: 1192979
Grant/Contract Number:  
SC0008832
Resource Type:
Journal Article: Published Article
Journal Name:
Physical Review. X
Additional Journal Information:
Journal Volume: 5; Journal Issue: 1; Journal ID: ISSN 2160-3308
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Svanidze, E., Liu, L., Frandsen, B., White, B.  D., Besara, T., Goko, T., Medina, T., Munsie, T.  J. S., Luke, G.  M., Zheng, D., Jin, C.  Q., Siegrist, T., Maple, M.  B., Uemura, Y.  J., and Morosan, E.. Non-Fermi liquid behavior close to a quantum critical point in a ferromagnetic state without local moments. United States: N. p., 2015. Web. doi:10.1103/PhysRevX.5.011026.
Svanidze, E., Liu, L., Frandsen, B., White, B.  D., Besara, T., Goko, T., Medina, T., Munsie, T.  J. S., Luke, G.  M., Zheng, D., Jin, C.  Q., Siegrist, T., Maple, M.  B., Uemura, Y.  J., & Morosan, E.. Non-Fermi liquid behavior close to a quantum critical point in a ferromagnetic state without local moments. United States. doi:10.1103/PhysRevX.5.011026.
Svanidze, E., Liu, L., Frandsen, B., White, B.  D., Besara, T., Goko, T., Medina, T., Munsie, T.  J. S., Luke, G.  M., Zheng, D., Jin, C.  Q., Siegrist, T., Maple, M.  B., Uemura, Y.  J., and Morosan, E.. Sun . "Non-Fermi liquid behavior close to a quantum critical point in a ferromagnetic state without local moments". United States. doi:10.1103/PhysRevX.5.011026.
@article{osti_1181592,
title = {Non-Fermi liquid behavior close to a quantum critical point in a ferromagnetic state without local moments},
author = {Svanidze, E. and Liu, L. and Frandsen, B. and White, B.  D. and Besara, T. and Goko, T. and Medina, T. and Munsie, T.  J. S. and Luke, G.  M. and Zheng, D. and Jin, C.  Q. and Siegrist, T. and Maple, M.  B. and Uemura, Y.  J. and Morosan, E.},
abstractNote = {A quantum critical point (QCP) occurs upon chemical doping of the weak itinerant ferromagnet Sc₃̣₁ In. Remarkable for a system with no local moments, the QCP is accompanied by non-Fermi liquid behavior, manifested in the logarithmic divergence of the specific heat both in the ferro-and the paramagnetic states, as well as linear temperature dependence of the low-temperature resistivity. With doping, critical scaling is observed close to the QCP, as the critical exponents δ, γ, and β have weak composition dependence, with δ nearly twice and β almost half of their respective mean-field values. The unusually large paramagnetic moment μPM ~ 1.3μB/F:U: is nearly composition independent. Evidence for strong spin fluctuations, accompanying the QCP at xc – 0.035 ± 0.005, may be ascribed to the reduced dimensionality of Sc₃̣₁ In, associated with the nearly one-dimensional Sc-In chains.},
doi = {10.1103/PhysRevX.5.011026},
journal = {Physical Review. X},
number = 1,
volume = 5,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 2015},
month = {Sun Mar 01 00:00:00 EST 2015}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevX.5.011026

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Cited by: 11 works
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Works referenced in this record:

Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides
journal, September 1976