Multiphase magnetism in Yb 2 Ti 2 O 7
Abstract
We use neutron scattering to show that ferromagnetism and antiferromagnetism coexist in the low T state of the pyrochlore quantum magnet . While magnetic Bragg peaks evidence long-range static ferromagnetic order, inelastic scattering shows that short-range correlated antiferromagnetism is also present. Small-angle neutron scattering provides direct evidence for mesoscale magnetic structure that we associate with metastable antiferromagnetism. Classical Monte Carlo simulations based on exchange interactions inferred from -oriented high-field spin wave measurements confirm that antiferromagnetism is metastable within the otherwise ferromagnetic ground state. The apparent lack of coherent spin wave excitations and strong sensitivity to quenched disorder characterizing is a consequence of this multiphase magnetism.
- Authors:
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Gordon and Betty Moore Foundation; National Science Foundation (NSF)
- OSTI Identifier:
- 1686214
- Alternate Identifier(s):
- OSTI ID: 1756278
- Grant/Contract Number:
- AC05-00OR22725; SC0019331; GBMF-4532; DMR190020; DMR-1644779
- Resource Type:
- Published Article
- Journal Name:
- Proceedings of the National Academy of Sciences of the United States of America
- Additional Journal Information:
- Journal Name: Proceedings of the National Academy of Sciences of the United States of America Journal Volume: 117 Journal Issue: 44; Journal ID: ISSN 0027-8424
- Publisher:
- National Academy of Sciences
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; frustrated magnetism; neutron scattering; phase transitions; pyrochlore
Citation Formats
Scheie, Allen, Kindervater, Jonas, Zhang, Shu, Changlani, Hitesh J., Sala, Gabriele, Ehlers, Georg, Heinemann, Andre, Tucker, Gregory S., Koohpayeh, Seyed M., and Broholm, Collin. Multiphase magnetism in Yb 2 Ti 2 O 7. United States: N. p., 2020.
Web. doi:10.1073/pnas.2008791117.
Scheie, Allen, Kindervater, Jonas, Zhang, Shu, Changlani, Hitesh J., Sala, Gabriele, Ehlers, Georg, Heinemann, Andre, Tucker, Gregory S., Koohpayeh, Seyed M., & Broholm, Collin. Multiphase magnetism in Yb 2 Ti 2 O 7. United States. https://doi.org/10.1073/pnas.2008791117
Scheie, Allen, Kindervater, Jonas, Zhang, Shu, Changlani, Hitesh J., Sala, Gabriele, Ehlers, Georg, Heinemann, Andre, Tucker, Gregory S., Koohpayeh, Seyed M., and Broholm, Collin. Fri .
"Multiphase magnetism in Yb 2 Ti 2 O 7". United States. https://doi.org/10.1073/pnas.2008791117.
@article{osti_1686214,
title = {Multiphase magnetism in Yb 2 Ti 2 O 7},
author = {Scheie, Allen and Kindervater, Jonas and Zhang, Shu and Changlani, Hitesh J. and Sala, Gabriele and Ehlers, Georg and Heinemann, Andre and Tucker, Gregory S. and Koohpayeh, Seyed M. and Broholm, Collin},
abstractNote = {We use neutron scattering to show that ferromagnetism and antiferromagnetism coexist in the low T state of the pyrochlore quantum magnet Yb 2 Ti 2 O 7 . While magnetic Bragg peaks evidence long-range static ferromagnetic order, inelastic scattering shows that short-range correlated antiferromagnetism is also present. Small-angle neutron scattering provides direct evidence for mesoscale magnetic structure that we associate with metastable antiferromagnetism. Classical Monte Carlo simulations based on exchange interactions inferred from ⟨ 111 ⟩ -oriented high-field spin wave measurements confirm that antiferromagnetism is metastable within the otherwise ferromagnetic ground state. The apparent lack of coherent spin wave excitations and strong sensitivity to quenched disorder characterizing Yb 2 Ti 2 O 7 is a consequence of this multiphase magnetism.},
doi = {10.1073/pnas.2008791117},
journal = {Proceedings of the National Academy of Sciences of the United States of America},
number = 44,
volume = 117,
place = {United States},
year = {Fri Oct 23 00:00:00 EDT 2020},
month = {Fri Oct 23 00:00:00 EDT 2020}
}
https://doi.org/10.1073/pnas.2008791117
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