Colossal magnetoresistance in a Mott insulator via magnetic field-driven insulator-metal transition
Abstract
Here, we present a new type of colossal magnetoresistance (CMR) arising from an anomalous collapse of the Mott insulating state via a modest magnetic field in a bilayer ruthenate, Ti-doped Ca3Ru2O7. Such an insulator-metal transition is accompanied by changes in both lattice and magnetic structures. Our findings have important implications because a magnetic field usually stabilizes the insulating ground state in a Mott-Hubbard system, thus calling for a deeper theoretical study to reexamine the magnetic field tuning of Mott systems with magnetic and electronic instabilities and spin-lattice-charge coupling. This study further provides a model approach to search for CMR systems other than manganites, such as Mott insulators in the vicinity of the boundary between competing phases.
- Authors:
-
- Michigan State Univ., East Lansing, MI (United States)
- Tulane Univ., New Orleans, LA (United States)
- Helmholtz Zentrum Berlin, Berlin (Germany)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Chinese Academy of Sciences, Ningbo (China)
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1344989
- Alternate Identifier(s):
- OSTI ID: 1254386
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 116; Journal Issue: 21; Journal ID: ISSN 0031-9007
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Zhu, M., Peng, J., Zou, T., Prokes, K., Mahanti, S. D., Hong, Tao, Mao, Z. Q., Liu, G. Q., and Ke, X. Colossal magnetoresistance in a Mott insulator via magnetic field-driven insulator-metal transition. United States: N. p., 2016.
Web. doi:10.1103/PhysRevLett.116.216401.
Zhu, M., Peng, J., Zou, T., Prokes, K., Mahanti, S. D., Hong, Tao, Mao, Z. Q., Liu, G. Q., & Ke, X. Colossal magnetoresistance in a Mott insulator via magnetic field-driven insulator-metal transition. United States. https://doi.org/10.1103/PhysRevLett.116.216401
Zhu, M., Peng, J., Zou, T., Prokes, K., Mahanti, S. D., Hong, Tao, Mao, Z. Q., Liu, G. Q., and Ke, X. Wed .
"Colossal magnetoresistance in a Mott insulator via magnetic field-driven insulator-metal transition". United States. https://doi.org/10.1103/PhysRevLett.116.216401. https://www.osti.gov/servlets/purl/1344989.
@article{osti_1344989,
title = {Colossal magnetoresistance in a Mott insulator via magnetic field-driven insulator-metal transition},
author = {Zhu, M. and Peng, J. and Zou, T. and Prokes, K. and Mahanti, S. D. and Hong, Tao and Mao, Z. Q. and Liu, G. Q. and Ke, X.},
abstractNote = {Here, we present a new type of colossal magnetoresistance (CMR) arising from an anomalous collapse of the Mott insulating state via a modest magnetic field in a bilayer ruthenate, Ti-doped Ca3Ru2O7. Such an insulator-metal transition is accompanied by changes in both lattice and magnetic structures. Our findings have important implications because a magnetic field usually stabilizes the insulating ground state in a Mott-Hubbard system, thus calling for a deeper theoretical study to reexamine the magnetic field tuning of Mott systems with magnetic and electronic instabilities and spin-lattice-charge coupling. This study further provides a model approach to search for CMR systems other than manganites, such as Mott insulators in the vicinity of the boundary between competing phases.},
doi = {10.1103/PhysRevLett.116.216401},
journal = {Physical Review Letters},
number = 21,
volume = 116,
place = {United States},
year = {Wed May 25 00:00:00 EDT 2016},
month = {Wed May 25 00:00:00 EDT 2016}
}
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