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Mazzone DG, Dzero M, Abeykoon AM, Yamaoka H, Ishii H, Hiraoka N, Rueff JP, Ablett JM, Imura K, Suzuki HS, Hancock JN, Jarrige I. Kondo-Induced Giant Isotropic Negative Thermal Expansion. PHYSICAL REVIEW LETTERS 2020; 124:125701. [PMID: 32281848 DOI: 10.1103/physrevlett.124.125701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Accepted: 02/14/2020] [Indexed: 06/11/2023]
Abstract
Negative thermal expansion is an unusual phenomenon appearing in only a handful of materials, but pursuit and mastery of the phenomenon holds great promise for applications across disciplines and industries. Here we report use of x-ray spectroscopy and diffraction to investigate the 4f-electronic properties in Y-doped SmS and employ the Kondo volume collapse model to interpret the results. Our measurements reveal an unparalleled decrease of the bulk Sm valence by over 20% at low temperatures in the mixed-valent golden phase, which we show is caused by a strong coupling between an emergent Kondo lattice state and a large isotropic volume change. The amplitude and temperature range of the negative thermal expansion appear strongly dependent on the Y concentration and the associated chemical disorder, providing control over the observed effect. This finding opens avenues for the design of Kondo lattice materials with tunable, giant, and isotropic negative thermal expansion.
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Affiliation(s)
- D G Mazzone
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
- Condensed Matter Physics and Materials Science Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - M Dzero
- Department of Physics, Kent State University, Kent, Ohio 44242, USA
| | - Am M Abeykoon
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Yamaoka
- RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | - H Ishii
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - N Hiraoka
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - J-P Rueff
- Synchrotron SOLEIL, L'Orme des Merisiers, BP 48 Saint-Aubin, 91192 Gif-sur-Yvette, France
- Sorbonne Université, CNRS, Laboratoire de Chimie Physique-Matière et Rayonnement, 75005 Paris, France
| | - J M Ablett
- Synchrotron SOLEIL, L'Orme des Merisiers, BP 48 Saint-Aubin, 91192 Gif-sur-Yvette, France
| | - K Imura
- Department of Physics, Nagoya University, Nagoya 464-8602, Japan
| | - H S Suzuki
- Research Center for Advanced Measurement and Characterization, National Institute for Materials Science (NIMS), Sengen, Tsukuba 305-0047, Japan
- The Institute for Solid State Physics, The University of Tokyo, Kashiwanoha, Kashiwa 277-8581, Japan
| | - J N Hancock
- Department of Physics and Institute for Materials Science, University of Connecticut, Storrs, Connecticut 06269, USA
| | - I Jarrige
- National Synchrotron Light Source II, Brookhaven National Laboratory, Upton, New York 11973, USA
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