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Title: Charge Density Wave in the New Polymorphs of RE 2Ru 3Ge 5 ( RE = Pr, Sm, Dy)

Abstract

A new polymorph of the RE 2Ru 3Ge 5 (RE = Pr, Sm, Dy) compounds has been grown as single crystals via an indium flux. These compounds crystallize in tetragonal space group P4/mnc with the Sc 2Fe 3Si 5-type structure, having lattice parameters a = 11.020(2) Å and c = 5.853(1) Å for RE = Pr, a = 10.982(2) Å and c = 5.777(1) Å for RE = Sm, and a = 10.927(2) Å and c = 5.697(1) Å for RE = Dy. These materials exhibit a structural transition at low temperature, which is attributed to an apparent charge density wave (CDW). Both the high-temperature average crystal structure and the low-temperature incommensurately modulated crystal structure (for Sm 2Ru 3Ge 5 as a representative) have been solved. The charge density wave order is manifested by periodic distortions of the onedimensional zigzag Ge chains. From X-ray diffraction, charge transport (electrical resistivity, Hall effect, magnetoresistance), magnetic measurements, and heat capacity, the ordering temperatures (T CDW) observed in the Pr and Sm analogues are ~200 and ~175 K, respectively. Furthermore, the charge transport measurement results indicate an electronic state transition happening simultaneously with the CDW transition. X-ray absorption near-edge spectroscopy (XANES) and electronic bandmore » structure results are also reported.« less

Authors:
ORCiD logo [1]; ORCiD logo [2];  [1];  [3];  [4];  [5];  [1];  [1];  [6];  [3];  [7];  [1];  [1]; ORCiD logo [2]
  1. Argonne National Lab. (ANL), Argonne, IL (United States)
  2. Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States)
  3. Northwestern Univ., Evanston, IL (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States); Leibniz Institute for Solid State and Materials Research Dresden IFW, Dresden (Germany)
  5. Argonne National Lab. (ANL), Argonne, IL (United States); Northern Illinois Univ., DeKalb, IL (United States)
  6. Cornell Univ., Ithaca, NY (United States)
  7. Iowa State Univ., Ames, IA (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); Canadian Light Source, Inc.; Northwestern University, International Institute for Nanotechnology (IIN); National Institutes of Health (NIH), National Institute of General Medical Sciences; USDOE Office of Science (SC), National Energy Research Scientific Computing Center (NERSC)
OSTI Identifier:
1351311
Grant/Contract Number:  
AC02-06CH11357
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 139; Journal Issue: 11; Journal ID: ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 36 MATERIALS SCIENCE

Citation Formats

Bugaris, Daniel E., Malliakas, Christos D., Han, Fei, Calta, Nicholas P., Sturza, Mihai, Krogstad, Matthew J., Osborn, Raymond, Rosenkranz, Stephan, Ruff, Jacob P. C., Trimarchi, Giancarlo, Bud?ko, Sergey L., Balasubramanian, Mahalingam, Chung, Duck Young, and Kanatzidis, Mercouri G. Charge Density Wave in the New Polymorphs of RE2Ru3Ge5 (RE = Pr, Sm, Dy). United States: N. p., 2017. Web. doi:10.1021/jacs.7b00284.
Bugaris, Daniel E., Malliakas, Christos D., Han, Fei, Calta, Nicholas P., Sturza, Mihai, Krogstad, Matthew J., Osborn, Raymond, Rosenkranz, Stephan, Ruff, Jacob P. C., Trimarchi, Giancarlo, Bud?ko, Sergey L., Balasubramanian, Mahalingam, Chung, Duck Young, & Kanatzidis, Mercouri G. Charge Density Wave in the New Polymorphs of RE2Ru3Ge5 (RE = Pr, Sm, Dy). United States. doi:10.1021/jacs.7b00284.
Bugaris, Daniel E., Malliakas, Christos D., Han, Fei, Calta, Nicholas P., Sturza, Mihai, Krogstad, Matthew J., Osborn, Raymond, Rosenkranz, Stephan, Ruff, Jacob P. C., Trimarchi, Giancarlo, Bud?ko, Sergey L., Balasubramanian, Mahalingam, Chung, Duck Young, and Kanatzidis, Mercouri G. Thu . "Charge Density Wave in the New Polymorphs of RE2Ru3Ge5 (RE = Pr, Sm, Dy)". United States. doi:10.1021/jacs.7b00284. https://www.osti.gov/servlets/purl/1351311.
@article{osti_1351311,
title = {Charge Density Wave in the New Polymorphs of RE2Ru3Ge5 (RE = Pr, Sm, Dy)},
author = {Bugaris, Daniel E. and Malliakas, Christos D. and Han, Fei and Calta, Nicholas P. and Sturza, Mihai and Krogstad, Matthew J. and Osborn, Raymond and Rosenkranz, Stephan and Ruff, Jacob P. C. and Trimarchi, Giancarlo and Bud?ko, Sergey L. and Balasubramanian, Mahalingam and Chung, Duck Young and Kanatzidis, Mercouri G.},
abstractNote = {A new polymorph of the RE2Ru3Ge5 (RE = Pr, Sm, Dy) compounds has been grown as single crystals via an indium flux. These compounds crystallize in tetragonal space group P4/mnc with the Sc2Fe3Si5-type structure, having lattice parameters a = 11.020(2) Å and c = 5.853(1) Å for RE = Pr, a = 10.982(2) Å and c = 5.777(1) Å for RE = Sm, and a = 10.927(2) Å and c = 5.697(1) Å for RE = Dy. These materials exhibit a structural transition at low temperature, which is attributed to an apparent charge density wave (CDW). Both the high-temperature average crystal structure and the low-temperature incommensurately modulated crystal structure (for Sm2Ru3Ge5 as a representative) have been solved. The charge density wave order is manifested by periodic distortions of the onedimensional zigzag Ge chains. From X-ray diffraction, charge transport (electrical resistivity, Hall effect, magnetoresistance), magnetic measurements, and heat capacity, the ordering temperatures (TCDW) observed in the Pr and Sm analogues are ~200 and ~175 K, respectively. Furthermore, the charge transport measurement results indicate an electronic state transition happening simultaneously with the CDW transition. X-ray absorption near-edge spectroscopy (XANES) and electronic band structure results are also reported.},
doi = {10.1021/jacs.7b00284},
journal = {Journal of the American Chemical Society},
number = 11,
volume = 139,
place = {United States},
year = {Thu Feb 16 00:00:00 EST 2017},
month = {Thu Feb 16 00:00:00 EST 2017}
}

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