Strong competition between orbital ordering and itinerancy in a frustrated spinel vanadate
Abstract
In this study, the crossover from localized to itinerant electron regimes in the geometrically frustrated spinel system Mn1-xCoxV2O4 is explored by neutron-scattering measurements, first-principles calculations, and spin models. At low Co doping, the orbital ordering (OO) of the localized V3+ spins suppresses magnetic frustration by triggering a tetragonal distortion. At high Co doping levels, however, electronic itinerancy melts the OO and lessens the structural and magnetic anisotropies, thus increasing the amount of geometric frustration for the V-site pyrochlore lattice. Contrary to the predicted paramagentism induced by chemical pressure, the measured noncollinear spin states in the Co-rich region of the phase diagram provide a unique platform where localized spins and electronic itinerancy compete in a geometrically frustrated spinel.
- Authors:
-
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Tennessee, Knoxville, TN (United States)
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Neutron Research; Univ. of Maryland, College Park, MD (United States)
- National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States). Center for Neutron Research
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1265325
- Alternate Identifier(s):
- OSTI ID: 1181381
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 91; Journal Issue: 2; Journal ID: ISSN 2469-9950
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Ma, Jie, Lee, Jun Hee, Hahn, Steven E., Hong, Tao, Cao, Huibo B., Aczel, Adam A., Dun, Zhiling L., Stone, Matt B., Tian, Wei, Qiu, Y., Copley, J. R. D., Zhou, H. D., Fishman, Randy Scott, and Matsuda, Masaaki. Strong competition between orbital ordering and itinerancy in a frustrated spinel vanadate. United States: N. p., 2015.
Web. doi:10.1103/PhysRevB.91.020407.
Ma, Jie, Lee, Jun Hee, Hahn, Steven E., Hong, Tao, Cao, Huibo B., Aczel, Adam A., Dun, Zhiling L., Stone, Matt B., Tian, Wei, Qiu, Y., Copley, J. R. D., Zhou, H. D., Fishman, Randy Scott, & Matsuda, Masaaki. Strong competition between orbital ordering and itinerancy in a frustrated spinel vanadate. United States. https://doi.org/10.1103/PhysRevB.91.020407
Ma, Jie, Lee, Jun Hee, Hahn, Steven E., Hong, Tao, Cao, Huibo B., Aczel, Adam A., Dun, Zhiling L., Stone, Matt B., Tian, Wei, Qiu, Y., Copley, J. R. D., Zhou, H. D., Fishman, Randy Scott, and Matsuda, Masaaki. Mon .
"Strong competition between orbital ordering and itinerancy in a frustrated spinel vanadate". United States. https://doi.org/10.1103/PhysRevB.91.020407. https://www.osti.gov/servlets/purl/1265325.
@article{osti_1265325,
title = {Strong competition between orbital ordering and itinerancy in a frustrated spinel vanadate},
author = {Ma, Jie and Lee, Jun Hee and Hahn, Steven E. and Hong, Tao and Cao, Huibo B. and Aczel, Adam A. and Dun, Zhiling L. and Stone, Matt B. and Tian, Wei and Qiu, Y. and Copley, J. R. D. and Zhou, H. D. and Fishman, Randy Scott and Matsuda, Masaaki},
abstractNote = {In this study, the crossover from localized to itinerant electron regimes in the geometrically frustrated spinel system Mn1-xCoxV2O4 is explored by neutron-scattering measurements, first-principles calculations, and spin models. At low Co doping, the orbital ordering (OO) of the localized V3+ spins suppresses magnetic frustration by triggering a tetragonal distortion. At high Co doping levels, however, electronic itinerancy melts the OO and lessens the structural and magnetic anisotropies, thus increasing the amount of geometric frustration for the V-site pyrochlore lattice. Contrary to the predicted paramagentism induced by chemical pressure, the measured noncollinear spin states in the Co-rich region of the phase diagram provide a unique platform where localized spins and electronic itinerancy compete in a geometrically frustrated spinel.},
doi = {10.1103/PhysRevB.91.020407},
journal = {Physical Review B},
number = 2,
volume = 91,
place = {United States},
year = {Mon Jan 26 00:00:00 EST 2015},
month = {Mon Jan 26 00:00:00 EST 2015}
}
Web of Science
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Works referencing / citing this record:
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