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Engel S, Gießelmann ECJ, Reimann MK, Pöttgen R, Janka O. On the Ytterbium Valence and the Physical Properties in Selected Intermetallic Phases. ACS ORGANIC & INORGANIC AU 2024; 4:188-222. [PMID: 38585514 PMCID: PMC10996054 DOI: 10.1021/acsorginorgau.3c00054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Revised: 11/16/2023] [Accepted: 11/17/2023] [Indexed: 04/09/2024]
Abstract
The present review summarizes important aspects of the crystal chemistry of ytterbium-based intermetallic compounds along with a selection of their outstanding physical properties. These originate in many cases from the ytterbium valence. Different valence states are possible here, divalent (4f14), intermediate-valent, or trivalent (4f13) ytterbium, resulting in simple diamagnetic, Pauli or Curie-Weiss paramagnetic, or valence fluctuating behavior. Especially, some of the Yb3+ intermetallics have gained deep interest due to their Kondo or heavy Fermion ground states. We have summarized their property investigations using magnetic and transport measurements, specific heat data, NMR, ESR, and Mössbauer spectroscopy, elastic and inelastic neutron scattering, and XAS data as well as detailed thermoelectric measurements.
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Affiliation(s)
- Stefan Engel
- Anorganische
Festkörperchemie Universität
des Saarlandes, Campus C4.1 66123 Saarbrücken, Germany
| | - Elias C. J. Gießelmann
- Anorganische
Festkörperchemie Universität
des Saarlandes, Campus C4.1 66123 Saarbrücken, Germany
| | - Maximilian K. Reimann
- Institut
für Anorganische und Analytische Chemie, Universität Münster Corrensstrasse 30 48149 Münster, Germany
| | - Rainer Pöttgen
- Institut
für Anorganische und Analytische Chemie, Universität Münster Corrensstrasse 30 48149 Münster, Germany
| | - Oliver Janka
- Anorganische
Festkörperchemie Universität
des Saarlandes, Campus C4.1 66123 Saarbrücken, Germany
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Jiang WB, Yang L, Guo CY, Hu Z, Lee JM, Smidman M, Wang YF, Shang T, Cheng ZW, Gao F, Ishii H, Tsuei KD, Liao YF, Lu X, Tjeng LH, Chen JM, Yuan HQ. Crossover from a heavy fermion to intermediate valence state in noncentrosymmetric Yb2Ni12(P,As)7. Sci Rep 2015; 5:17608. [PMID: 26626431 PMCID: PMC4667268 DOI: 10.1038/srep17608] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Accepted: 11/03/2015] [Indexed: 11/16/2022] Open
Abstract
We report measurements of the physical properties and electronic structure of the hexagonal compounds Yb2Ni12Pn7 (Pn = P, As) by measuring the electrical resistivity, magnetization, specific heat and partial fluorescence yield x-ray absorption spectroscopy (PFY-XAS). These demonstrate a crossover upon reducing the unit cell volume, from an intermediate valence state in Yb2Ni12As7 to a heavy-fermion paramagnetic state in Yb2Ni12P7, where the Yb is nearly trivalent. Application of pressure to Yb2Ni12P7 suppresses TFL, the temperature below which Fermi liquid behavior is recovered, suggesting the presence of a quantum critical point (QCP) under pressure. However, while there is little change in the Yb valence of Yb2Ni12P7 up to 30 GPa, there is a strong increase for Yb2Ni12As7 under pressure, before a near constant value is reached. These results indicate that any magnetic QCP in this system is well separated from strong valence fluctuations. The pressure dependence of the valence and lattice parameters of Yb2Ni12As7 are compared and at 1 GPa, there is an anomaly in the unit cell volume as well as a change in the slope of the Yb valence, indicating a correlation between structural and electronic changes.
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Affiliation(s)
- W B Jiang
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China
| | - L Yang
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China
| | - C Y Guo
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China
| | - Z Hu
- Max Planck Institute for Chemical Physics of Solids, D-01187 Dresden, Germany
| | - J M Lee
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - M Smidman
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China
| | - Y F Wang
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China
| | - T Shang
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China
| | - Z W Cheng
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China
| | - F Gao
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China
| | - H Ishii
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - K D Tsuei
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - Y F Liao
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - X Lu
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
| | - L H Tjeng
- Max Planck Institute for Chemical Physics of Solids, D-01187 Dresden, Germany
| | - J M Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - H Q Yuan
- Center for Correlated Matter and Department of Physics, Zhejiang University, Hangzhou, 310058, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China
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