Electronic structure of ferromagnetic heavy fermion, YbPdSi, YbPdGe, and YbPtGe studied by photoelectron spectroscopy, x-ray emission spectroscopy, and DFT + DMFT calculations
Abstract
Here, the electronic structures of ferromagnetic heavy fermion Yb compounds of YbPdSi, YbPdGe, and YbPtGe are studied by photoelectron spectroscopy around the Yb 4d–4f resonance, resonant x-ray emission spectroscopy at the Yb L 3 absorption edge, and density functional theory combined with dynamical mean field theory calculations. These compounds all have a temperature-independent intermediate Yb valence with large $${\rm Yb}^{3+}$$ and small $${\rm Yb}^{2+}$$ components. The magnitude of the Yb valence is evaluated to be YbPtGe $$<$$ YbPdGe $$\lesssim $$ YbPdSi, suggesting that YbPtGe is the closest to the quantum critical point among the three Yb compounds. Our results support the scenario of the coexistence of heavy fermion behavior and ferromagnetic ordering which is described by a magnetically-ordered Kondo lattice where the magnitude of the Kondo effect and the RKKY interaction are comparable.
- Authors:
-
- RIKEN SPring-8 Center (RSC), Sayo (Japan)
- Uppsala Univ. (Sweden). Dept. of Physics and Astronomy
- National Inst. for Materials Science (NIMS), Tsukuba (Japan). International Center for Materials Nanoarchitectonics (MANA)
- National Defense Academy of Japan, Yokosuka (Japan). Dept. of Applied Physics
- Kwansei Gakuin Univ., Sanda (Japan). Graduate School of Science and Technology
- Hiroshima Univ. (Japan). Hiroshima Synchrotron Radiation Center
- Hiroshima Univ. (Japan). Hiroshima Synchrotron Radiation Center; Diamond Light Source, Oxfordshire (United Kingdom)
- Brookhaven National Lab. (BNL), Upton, NY (United States). Photon Sciences Directorate
- National Synchrotron Radiation Research Center (NSRRC), Hsinchu (Taiwan)
- Publication Date:
- Research Org.:
- Brookhaven National Laboratory (BNL), Upton, NY (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Hiroshima Univ. (Japan); Japan Society for the Promotion of Science (JSPS); Swiss National Science Foundation (SNF)
- OSTI Identifier:
- 1433946
- Report Number(s):
- BNL-203459-2018-JAAM
Journal ID: ISSN 0953-8984; TRN: US1802811
- Grant/Contract Number:
- SC0012704; Kiban C 15K05194; Kiban C 15K05190; PBFRP2_140028
- Resource Type:
- Journal Article: Accepted Manuscript
- Journal Name:
- Journal of Physics. Condensed Matter
- Additional Journal Information:
- Journal Volume: 29; Journal Issue: 47; Journal ID: ISSN 0953-8984
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 30 DIRECT ENERGY CONVERSION; 43 PARTICLE ACCELERATORS; ferromagnetic heavy fermion; photoelectron spectroscopy; x-ray emission spectroscopy
Citation Formats
Yamaoka, Hitoshi, Thunstrom, Patrik, Tsujii, Naohito, Katoh, Kenichi, Yamamoto, Yoshiya, Schwier, Eike F., Shimada, Kenya, Iwasawa, Hideaki, Arita, Masashi, Jarrige, Ignace, Hiraoka, Nozomu, Ishii, Hirofumi, Tsuei, Ku-Ding, and Mizuki, Jun?ichiro. Electronic structure of ferromagnetic heavy fermion, YbPdSi, YbPdGe, and YbPtGe studied by photoelectron spectroscopy, x-ray emission spectroscopy, and DFT + DMFT calculations. United States: N. p., 2017.
Web. doi:10.1088/1361-648X/aa8b98.
Yamaoka, Hitoshi, Thunstrom, Patrik, Tsujii, Naohito, Katoh, Kenichi, Yamamoto, Yoshiya, Schwier, Eike F., Shimada, Kenya, Iwasawa, Hideaki, Arita, Masashi, Jarrige, Ignace, Hiraoka, Nozomu, Ishii, Hirofumi, Tsuei, Ku-Ding, & Mizuki, Jun?ichiro. Electronic structure of ferromagnetic heavy fermion, YbPdSi, YbPdGe, and YbPtGe studied by photoelectron spectroscopy, x-ray emission spectroscopy, and DFT + DMFT calculations. United States. https://doi.org/10.1088/1361-648X/aa8b98
Yamaoka, Hitoshi, Thunstrom, Patrik, Tsujii, Naohito, Katoh, Kenichi, Yamamoto, Yoshiya, Schwier, Eike F., Shimada, Kenya, Iwasawa, Hideaki, Arita, Masashi, Jarrige, Ignace, Hiraoka, Nozomu, Ishii, Hirofumi, Tsuei, Ku-Ding, and Mizuki, Jun?ichiro. 2017.
"Electronic structure of ferromagnetic heavy fermion, YbPdSi, YbPdGe, and YbPtGe studied by photoelectron spectroscopy, x-ray emission spectroscopy, and DFT + DMFT calculations". United States. https://doi.org/10.1088/1361-648X/aa8b98. https://www.osti.gov/servlets/purl/1433946.
@article{osti_1433946,
title = {Electronic structure of ferromagnetic heavy fermion, YbPdSi, YbPdGe, and YbPtGe studied by photoelectron spectroscopy, x-ray emission spectroscopy, and DFT + DMFT calculations},
author = {Yamaoka, Hitoshi and Thunstrom, Patrik and Tsujii, Naohito and Katoh, Kenichi and Yamamoto, Yoshiya and Schwier, Eike F. and Shimada, Kenya and Iwasawa, Hideaki and Arita, Masashi and Jarrige, Ignace and Hiraoka, Nozomu and Ishii, Hirofumi and Tsuei, Ku-Ding and Mizuki, Jun?ichiro},
abstractNote = {Here, the electronic structures of ferromagnetic heavy fermion Yb compounds of YbPdSi, YbPdGe, and YbPtGe are studied by photoelectron spectroscopy around the Yb 4d–4f resonance, resonant x-ray emission spectroscopy at the Yb L 3 absorption edge, and density functional theory combined with dynamical mean field theory calculations. These compounds all have a temperature-independent intermediate Yb valence with large ${\rm Yb}^{3+}$ and small ${\rm Yb}^{2+}$ components. The magnitude of the Yb valence is evaluated to be YbPtGe $<$ YbPdGe $\lesssim $ YbPdSi, suggesting that YbPtGe is the closest to the quantum critical point among the three Yb compounds. Our results support the scenario of the coexistence of heavy fermion behavior and ferromagnetic ordering which is described by a magnetically-ordered Kondo lattice where the magnitude of the Kondo effect and the RKKY interaction are comparable.},
doi = {10.1088/1361-648X/aa8b98},
url = {https://www.osti.gov/biblio/1433946},
journal = {Journal of Physics. Condensed Matter},
issn = {0953-8984},
number = 47,
volume = 29,
place = {United States},
year = {Thu Nov 02 00:00:00 EDT 2017},
month = {Thu Nov 02 00:00:00 EDT 2017}
}
Web of Science
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