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Title: Collapse of the Kondo state and ferromagnetic quantum phase transition in YbFe 2Zn 20

Here, we present the electrical resistivity data under application of pressures up to ~26 GPa and down to 50 mK on YbFe 2Zn 20. We find a pressure induced magnetic phase transition with an onset at p c = 18.2±0.8 GPa. At ambient pressure, YbFe 2Zn 20 manifests a heavy fermion, nonmagnetic ground state and the Fermi liquid behavior at low temperatures. As pressure is increased, the power law exponent in resistivity, n, deviates significantly from Fermi liquid behavior and tends to saturate with n = 1 near p c. A pronounced resistivity maximum T max, which scales with the Kondo temperature, is observed. T max decreases with increasing pressure and flattened out near pc indicating the suppression of Kondo exchange interaction. For p > p c, T max shows a sudden upward shift, most likely becoming associated with crystal electric field scattering. Application of magnetic field for p > p c broadens the transition and shifts it toward the higher temperature, which is a typical behavior of a transition towards a ferromagnetic state, or a state with a significant ferromagnetic component. The magnetic transition appears to abruptly develop above pc, suggesting probable first-order (with changing pressure) nature of themore » transition; once stabilized, the ordering temperature does not depend on pressure up to ~26 GPa. Taken as a whole, these data suggest that YbFe 2Zn 20 has a quantum phase transition at p c = 18.2 GPa associated with the avoided quantum criticality in metallic ferromagnets.« less
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [3] ;  [4] ;  [1] ;  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
  2. Carnegie Inst. of Washington, Washington, DC (United States); Carnegie Inst. of Washington, Argonne, IL (United States)
  3. Carnegie Inst. of Washington, Washington, DC (United States)
  4. FSRC Crystallography and Photonics of Russian Academy of Sciences, Moscow (Russia); Russian Academy of Sciences, Troitsk (Russia); Immanuel Kant Baltic Federal Univ., Kaliningrad (Russia)
Publication Date:
Report Number(s):
IS-J-9797
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:
AC02-07CH11358; FG02-99ER45775; 16-12-10464
Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 98; Journal Issue: 17; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Research Org:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1481867

Kaluarachchi, Udhara S., Xiang, Li, Ying, Jianjun, Kong, Tai, Struzhkin, Viktor, Gavriliuk, Alexander, Bud'ko, Sergey L., and Canfield, Paul C.. Collapse of the Kondo state and ferromagnetic quantum phase transition in YbFe2Zn20. United States: N. p., Web. doi:10.1103/physrevb.98.174405.
Kaluarachchi, Udhara S., Xiang, Li, Ying, Jianjun, Kong, Tai, Struzhkin, Viktor, Gavriliuk, Alexander, Bud'ko, Sergey L., & Canfield, Paul C.. Collapse of the Kondo state and ferromagnetic quantum phase transition in YbFe2Zn20. United States. doi:10.1103/physrevb.98.174405.
Kaluarachchi, Udhara S., Xiang, Li, Ying, Jianjun, Kong, Tai, Struzhkin, Viktor, Gavriliuk, Alexander, Bud'ko, Sergey L., and Canfield, Paul C.. 2018. "Collapse of the Kondo state and ferromagnetic quantum phase transition in YbFe2Zn20". United States. doi:10.1103/physrevb.98.174405.
@article{osti_1481867,
title = {Collapse of the Kondo state and ferromagnetic quantum phase transition in YbFe2Zn20},
author = {Kaluarachchi, Udhara S. and Xiang, Li and Ying, Jianjun and Kong, Tai and Struzhkin, Viktor and Gavriliuk, Alexander and Bud'ko, Sergey L. and Canfield, Paul C.},
abstractNote = {Here, we present the electrical resistivity data under application of pressures up to ~26 GPa and down to 50 mK on YbFe2Zn20. We find a pressure induced magnetic phase transition with an onset at pc = 18.2±0.8 GPa. At ambient pressure, YbFe2Zn20 manifests a heavy fermion, nonmagnetic ground state and the Fermi liquid behavior at low temperatures. As pressure is increased, the power law exponent in resistivity, n, deviates significantly from Fermi liquid behavior and tends to saturate with n = 1 near pc. A pronounced resistivity maximum Tmax, which scales with the Kondo temperature, is observed. Tmax decreases with increasing pressure and flattened out near pc indicating the suppression of Kondo exchange interaction. For p > pc,Tmax shows a sudden upward shift, most likely becoming associated with crystal electric field scattering. Application of magnetic field for p > pc broadens the transition and shifts it toward the higher temperature, which is a typical behavior of a transition towards a ferromagnetic state, or a state with a significant ferromagnetic component. The magnetic transition appears to abruptly develop above pc, suggesting probable first-order (with changing pressure) nature of the transition; once stabilized, the ordering temperature does not depend on pressure up to ~26 GPa. Taken as a whole, these data suggest that YbFe2Zn20 has a quantum phase transition at pc = 18.2 GPa associated with the avoided quantum criticality in metallic ferromagnets.},
doi = {10.1103/physrevb.98.174405},
journal = {Physical Review B},
number = 17,
volume = 98,
place = {United States},
year = {2018},
month = {11}
}

Works referenced in this record:

Resistance Minimum in Dilute Magnetic Alloys
journal, July 1964
  • Kondo, J.
  • Progress of Theoretical Physics, Vol. 32, Issue 1, p. 37-49
  • DOI: 10.1143/PTP.32.37