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Title: Crystal structure of the inversion-breaking metal Cd 2 Re 2 O 7

Abstract

Second harmonic generation (SHG) on the pyrochlore metal Cd2Re2O7 indicates the presence of three order parameters setting in below an inversion breaking transition. Here, we explore a possible structural explanation and relate it not only to the SHG data but also to neutron and x-ray diffraction, where we find that such a structural scenario can explain certain reflection extinctions observed in single crystal x-ray data. From this analysis, we suggest future experiments that could be done to resolve this matter. Lastly, we comment on the Landau-violating nature of the inversion breaking transition and its relation to similar phenomena observed in improper ferroelectrics.

Authors:
ORCiD logo [1]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
OSTI Identifier:
1582583
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 101; Journal Issue: 4; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Norman, M. R. Crystal structure of the inversion-breaking metal Cd2Re2O7. United States: N. p., 2020. Web. doi:10.1103/PhysRevB.101.045117.
Norman, M. R. Crystal structure of the inversion-breaking metal Cd2Re2O7. United States. doi:https://doi.org/10.1103/PhysRevB.101.045117
Norman, M. R. Mon . "Crystal structure of the inversion-breaking metal Cd2Re2O7". United States. doi:https://doi.org/10.1103/PhysRevB.101.045117. https://www.osti.gov/servlets/purl/1582583.
@article{osti_1582583,
title = {Crystal structure of the inversion-breaking metal Cd2Re2O7},
author = {Norman, M. R.},
abstractNote = {Second harmonic generation (SHG) on the pyrochlore metal Cd2Re2O7 indicates the presence of three order parameters setting in below an inversion breaking transition. Here, we explore a possible structural explanation and relate it not only to the SHG data but also to neutron and x-ray diffraction, where we find that such a structural scenario can explain certain reflection extinctions observed in single crystal x-ray data. From this analysis, we suggest future experiments that could be done to resolve this matter. Lastly, we comment on the Landau-violating nature of the inversion breaking transition and its relation to similar phenomena observed in improper ferroelectrics.},
doi = {10.1103/PhysRevB.101.045117},
journal = {Physical Review B},
number = 4,
volume = 101,
place = {United States},
year = {2020},
month = {1}
}

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Works referenced in this record:

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