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Title: Magnetically induced phonon splitting in A Cr 2 O 4 spinels from first principles

Abstract

We study the magnetically-induced phonon splitting in cubic ACr 2O 4 (A=Mg, Zn, Cd) spinels from first principles and demonstrate that the sign of the splitting, which is experimentally observed to be opposite in CdCr 2O 4 compared to ZnCr 2O 4 and MgCr 2O 4, is determined solely by the particular magnetic ordering pattern observed in these compounds. We further show that this interaction between magnetism and phonon frequencies can be fully described by the previously proposed spin-phonon coupling model [C. J. Fennie and K. M. Rabe, Phys. Rev. Lett. 96, 205505 (2006)] that includes only the nearest neighbor exchange. In conclusion, using this model with materials specific parameters calculated from first principles, we provide additional insights into the physics of spin-phonon coupling in this intriguing family of compounds.

Authors:
 [1];  [2]
  1. Ames Lab., Ames, IA (United States)
  2. Rutgers Univ., Piscataway, NJ (United States)
Publication Date:
Research Org.:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1321913
Alternate Identifier(s):
OSTI ID: 1249690
Report Number(s):
IS-J-9014
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 93; Journal Issue: 13; 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

Wysocki, Aleksander L., and Birol, Turan. Magnetically induced phonon splitting in ACr2O4 spinels from first principles. United States: N. p., 2016. Web. doi:10.1103/PhysRevB.93.134425.
Wysocki, Aleksander L., & Birol, Turan. Magnetically induced phonon splitting in ACr2O4 spinels from first principles. United States. doi:10.1103/PhysRevB.93.134425.
Wysocki, Aleksander L., and Birol, Turan. Fri . "Magnetically induced phonon splitting in ACr2O4 spinels from first principles". United States. doi:10.1103/PhysRevB.93.134425. https://www.osti.gov/servlets/purl/1321913.
@article{osti_1321913,
title = {Magnetically induced phonon splitting in ACr2O4 spinels from first principles},
author = {Wysocki, Aleksander L. and Birol, Turan},
abstractNote = {We study the magnetically-induced phonon splitting in cubic ACr2O4 (A=Mg, Zn, Cd) spinels from first principles and demonstrate that the sign of the splitting, which is experimentally observed to be opposite in CdCr2O4 compared to ZnCr2O4 and MgCr2O4, is determined solely by the particular magnetic ordering pattern observed in these compounds. We further show that this interaction between magnetism and phonon frequencies can be fully described by the previously proposed spin-phonon coupling model [C. J. Fennie and K. M. Rabe, Phys. Rev. Lett. 96, 205505 (2006)] that includes only the nearest neighbor exchange. In conclusion, using this model with materials specific parameters calculated from first principles, we provide additional insights into the physics of spin-phonon coupling in this intriguing family of compounds.},
doi = {10.1103/PhysRevB.93.134425},
journal = {Physical Review B},
number = 13,
volume = 93,
place = {United States},
year = {2016},
month = {4}
}

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    Works referencing / citing this record:

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    journal, June 2007

    • Luo, Weidong; Zhang, Peihong; Cohen, Marvin L.
    • Solid State Communications, Vol. 142, Issue 9
    • DOI: 10.1016/j.ssc.2007.03.047

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    • DOI: 10.1063/1.1658810

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    • DOI: 10.1016/j.cossms.2012.08.002

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