Order-Disorder Transitions in ( Ca x Sr 1 - x ) 3 Rh 4 Sn 13
Journal Article
·
· Physical Review Letters
- Argonne National Laboratory (ANL), Lemont, IL (United States). Materials Science Division; Northern Illinois University, DeKalb, IL (United States)
- Argonne National Laboratory (ANL), Lemont, IL (United States). Materials Science Division
- Argonne National Laboratory (ANL), Lemont, IL (United States)
- University of Maryland, College Park, MD (United States); National Institute of Standards and Technology (NIST), Gaithersburg, MD (United States)
The classification of structural phase transitions as displacive or order-disorder in character is usually based on spectroscopic data above the transition. Here, we use single crystal x-ray diffraction to investigate structural correlations in the quasiskutterudites, (CaxSr1-x)3Rh4Sn13, which have a quantum phase transition at x ~ 0.9. Three-dimensional pair distribution functions show that the amplitudes of local atomic displacements are temperature independent below the transition and persist to well above the transition, a signature of order-disorder behavior. The implications for the associated electronic transitions are discussed.
- Research Organization:
- Argonne National Laboratory (ANL), Lemont, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1868992
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 9 Vol. 128; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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