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Title: Pressure-dependent intermediate valence behavior in YbNiGa 4 and YbNiIn 4

Abstract

We report a comprehensive structural and valence study of the intermediate valent materials YbNiGa4 and YbNiIn4 under pressures up to 60 GPa. YbNiGa4 undergoes a smooth volume contraction and shows steady increase in Yb-valence with pressure, though the Yb-valence reaches saturation around 25 GPa. In YbNiIn4, a change in pressure dependence of the volume and a peak in Yb-valence suggest a pressure induced electronic topological transition occurs around 10-14 GPa. In the pressure region where YbNiIn4 and YbNiGa4 possess similar Yb-Yb spacings the Yb-valence reveals a precipitous drop. This drop is not captured by density-functional-theory calculations and implies that both the lattice degrees of freedom and the chemical environment play an important role in establishing the valence of Yb.

Authors:
 [1];  [2];  [3];  [3];  [3];  [3];  [3];  [2];  [2];  [4];  [4];  [5];  [5];  [6];  [2]
  1. Univ. of California, Davis, CA (United States). Dept. of Physics; Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States). HP-CAT. X-ray Science Division
  4. Univ. of Maryland, College Park, MD (United States). Center for Nanophysics and Advanced Materials. Dept. of Physics
  5. Florida State Univ., Tallahassee, FL (United States). National High Magnetic Field Lab.
  6. Univ. of California, Davis, CA (United States). Dept. of Physics
Publication Date:
Research Org.:
Energy Frontier Research Centers (EFRC) (United States). Center for Actinide Science & Technology (CAST); Argonne National Laboratory (ANL), Argonne, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Florida State Univ., Tallahassee, FL (United States); Univ. of Maryland, College Park, MD (United States); Univ. of California, Davis, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS); USDOE National Nuclear Security Administration (NNSA); LLNL Laboratory Directed Research and Development (LDRD) Program; National Science Foundation (NSF); Gordon and Betty Moore Foundation (United States)
OSTI Identifier:
1495701
Alternate Identifier(s):
OSTI ID: 1489083; OSTI ID: 1497304
Report Number(s):
LLNL-JRNL-751141
Journal ID: ISSN 2469-9950; 150445
Grant/Contract Number:  
AC02-06CH11357; AC52-07NA27344; SC0016568; SC0014664; DMR-1609855; DMR-1157490; DMR-1644779; GBMF4419
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 98; Journal Issue: 21; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; electronic structure; density functional theory; pressure effects; X-ray absorption spectroscopy; X-ray diffraction

Citation Formats

Brubaker, Z. E., Stillwell, R. L., Chow, P., Xiao, Y., Kenney-Benson, C., Ferry, R., Popov, D., Donald, S. B., Söderlind, P., Campbell, D. J., Paglione, J., Huang, K., Baumbach, R. E., Zieve, R. J., and Jeffries, J. R. Pressure-dependent intermediate valence behavior in YbNiGa4 and YbNiIn4. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.98.214115.
Brubaker, Z. E., Stillwell, R. L., Chow, P., Xiao, Y., Kenney-Benson, C., Ferry, R., Popov, D., Donald, S. B., Söderlind, P., Campbell, D. J., Paglione, J., Huang, K., Baumbach, R. E., Zieve, R. J., & Jeffries, J. R. Pressure-dependent intermediate valence behavior in YbNiGa4 and YbNiIn4. United States. https://doi.org/10.1103/PhysRevB.98.214115
Brubaker, Z. E., Stillwell, R. L., Chow, P., Xiao, Y., Kenney-Benson, C., Ferry, R., Popov, D., Donald, S. B., Söderlind, P., Campbell, D. J., Paglione, J., Huang, K., Baumbach, R. E., Zieve, R. J., and Jeffries, J. R. Fri . "Pressure-dependent intermediate valence behavior in YbNiGa4 and YbNiIn4". United States. https://doi.org/10.1103/PhysRevB.98.214115. https://www.osti.gov/servlets/purl/1495701.
@article{osti_1495701,
title = {Pressure-dependent intermediate valence behavior in YbNiGa4 and YbNiIn4},
author = {Brubaker, Z. E. and Stillwell, R. L. and Chow, P. and Xiao, Y. and Kenney-Benson, C. and Ferry, R. and Popov, D. and Donald, S. B. and Söderlind, P. and Campbell, D. J. and Paglione, J. and Huang, K. and Baumbach, R. E. and Zieve, R. J. and Jeffries, J. R.},
abstractNote = {We report a comprehensive structural and valence study of the intermediate valent materials YbNiGa4 and YbNiIn4 under pressures up to 60 GPa. YbNiGa4 undergoes a smooth volume contraction and shows steady increase in Yb-valence with pressure, though the Yb-valence reaches saturation around 25 GPa. In YbNiIn4, a change in pressure dependence of the volume and a peak in Yb-valence suggest a pressure induced electronic topological transition occurs around 10-14 GPa. In the pressure region where YbNiIn4 and YbNiGa4 possess similar Yb-Yb spacings the Yb-valence reveals a precipitous drop. This drop is not captured by density-functional-theory calculations and implies that both the lattice degrees of freedom and the chemical environment play an important role in establishing the valence of Yb.},
doi = {10.1103/PhysRevB.98.214115},
journal = {Physical Review B},
number = 21,
volume = 98,
place = {United States},
year = {Fri Dec 28 00:00:00 EST 2018},
month = {Fri Dec 28 00:00:00 EST 2018}
}

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