Electronic origin of negative thermal expansion in samarium hexaboride revealed by X-ray diffraction and total scattering-Reference-Cited by-同舟云学术

Electronic origin of negative thermal expansion in samarium hexaboride revealed by X-ray diffraction and total scattering

Published:2024 Issue:9 Volume:26 Page:7664-7673
ISSN:1463-9076
Container-title:Physical Chemistry Chemical Physics
language:en
Short-container-title:Phys. Chem. Chem. Phys.

Author:

Li Li¹^ORCID,Dove Martin T.²³⁴^ORCID,Wei Zhongsheng⁴^ORCID,Phillips Anthony E.⁴^ORCID,Keeble Dean S.⁵^ORCID

Affiliation:

1. College of Science, Civil Aviation Flight University of China, 46 Nanchang Road, Guanghan, 618307, Sichuan, China

2. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, 610065, Sichuan, China

3. School of Mechanical Engineering, Dongguan University of Technology, 1st Daxue Road, Songshan Lake, Dongguan, 523000, Guangdong, China

4. School of Physical and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, UK

5. Diamond Light Source Ltd, Harwell Science and Innovation Campus, Didcot, Oxfordshire, OX11 0DE, UK

Abstract

Using X-ray diffraction and measurements of the pair distribution function we show that negative thermal expansion in SmB6 arises from charge transfer rather than the traditional tension effect.

Funder

National Natural Science Foundation of China

Civil Aviation University of China

Publisher

Royal Society of Chemistry (RSC)

Link

http://pubs.rsc.org/en/content/articlepdf/2024/CP/D3CP05954E

Reference50 articles.

1. Temperature dependences of the parameters of atoms in the crystal structure of the intermediate-valence semiconductor SmB6: investigation by high-resolution powder neutron diffraction

2. Structural refinement and thermal expansion of hexaborides

3. The contribution of phonons to the thermal expansion of some simple cubic hexaboride structures: SmB₆, CaB₆, SrB₆ and BaB₆

4. Visualization and analysis of crystal structures using CrystalMaker software

5. Emergent mystery in the Kondo insulator samarium hexaboride

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