Intertwined magnetic, structural, and electronic transitions in V2O3

Benjamin A. Frandsen; Yoav Kalcheim; Ilya Valmianski; Alexander S. Mcleod; Z. Guguchia; Sky C. Cheung; Alannah M. Hallas; Murray N. Wilson; Yipeng Cai; Graeme M. Luke; Z. Salman; A. Suter; T. Prokscha; Taito Murakami; Hiroshi Kageyama; D. N. Basov; Ivan K. Schuller; Yasutomo J. Uemura

doi:10.1103/PhysRevB.100.235136

Intertwined magnetic, structural, and electronic transitions in V2O3

Benjamin A. Frandsen, Yoav Kalcheim, Ilya Valmianski, Alexander S. Mcleod, Z. Guguchia, Sky C. Cheung, Alannah M. Hallas, Murray N. Wilson, Yipeng Cai, Graeme M. Luke, Z. Salman, A. Suter, T. Prokscha, Taito Murakami, Hiroshi Kageyama, D. N. Basov, Ivan K. Schuller, Yasutomo J. Uemura

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Abstract

We present a coordinated study of the paramagnetic-to-antiferromagnetic, rhombohedral-to-monoclinic, and metal-to-insulator transitions in thin-film specimens of the classic Mott insulator V2O3 using low-energy muon spin relaxation, X-ray diffraction, and nanoscale-resolved near-field infrared spectroscopic techniques. The measurements provide a detailed characterization of the thermal evolution of the magnetic, structural, and electronic phase transitions occurring in a wide temperature range, including quantitative measurements of the high- A nd low-temperature phase fractions for each transition. The results reveal a stable coexistence of the high- A nd low-temperature phases over a broad temperature range throughout the transition. Careful comparison of temperature dependence of the different measurements, calibrated by the resistance of the sample, demonstrates that the electronic, magnetic, and structural degrees of freedom remain tightly coupled to each other during the transition process. We also find evidence for antiferromagnetic fluctuations in the vicinity of the phase transition, highlighting the important role of the magnetic degree of freedom in the metal-insulator transition.

Original language	English (US)
Article number	235136
Journal	Physical Review B
Volume	100
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevB.100.235136
State	Published - Dec 23 2019
Externally published	Yes

Bibliographical note

Funding Information:
This is a highly collaborative research effort. Experiments were designed jointly and the manuscript was written in multiple iterations by all coauthors. This work is based on experiments performed at the Swiss Muon Source SµS, Paul Scherrer Institute, Villigen, Switzerland. Synthesis, structure, and transport measurements were performed at UCSD (Y.K., I.V., and I.K.S) under Grant No. DE-FG02-87ER-45322. Work at Columbia University was supported by the US National Science Foundation (NSF) via Grant No. DMREF DMR-1436095, NSF Grant No. DMR-1105961, NSF Grant No. DMR-1610633, and the NSF PIRE program through Grant No. OISE-0968226, with additional support from the Japan Atomic Energy Agency Reimei Project and the Friends of Todai Foundation. B.A.F. acknowledges support from the NSF GRFP under Grant No. DGE-11-44155 and support from the College of Physical and Mathematical Sciences at Brigham Young Univeresity. A.S.M. and D.N.B. are supported by ARO Grant W911NF-17-1-0543. Development of nano-optical instrumentation at Columbia is supported by AFOSR FA9550-15-1-0478. Work at Kyoto University was supported by JSPS Core-to-Core Program (a) Advanced Research Networks.

Publisher Copyright:
© 2019 American Physical Society.

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Frandsen, B. A., Kalcheim, Y., Valmianski, I., Mcleod, A. S., Guguchia, Z., Cheung, S. C., Hallas, A. M., Wilson, M. N., Cai, Y., Luke, G. M., Salman, Z., Suter, A., Prokscha, T., Murakami, T., Kageyama, H., Basov, D. N., Schuller, I. K., & Uemura, Y. J. (2019). Intertwined magnetic, structural, and electronic transitions in V2O3. Physical Review B, 100(23), Article 235136. https://doi.org/10.1103/PhysRevB.100.235136

Frandsen, BA, Kalcheim, Y, Valmianski, I, Mcleod, AS, Guguchia, Z, Cheung, SC, Hallas, AM, Wilson, MN, Cai, Y, Luke, GM, Salman, Z, Suter, A, Prokscha, T, Murakami, T, Kageyama, H, Basov, DN, Schuller, IK & Uemura, YJ 2019, 'Intertwined magnetic, structural, and electronic transitions in V2O3', Physical Review B, vol. 100, no. 23, 235136. https://doi.org/10.1103/PhysRevB.100.235136

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title = "Intertwined magnetic, structural, and electronic transitions in V2O3",

abstract = "We present a coordinated study of the paramagnetic-to-antiferromagnetic, rhombohedral-to-monoclinic, and metal-to-insulator transitions in thin-film specimens of the classic Mott insulator V2O3 using low-energy muon spin relaxation, X-ray diffraction, and nanoscale-resolved near-field infrared spectroscopic techniques. The measurements provide a detailed characterization of the thermal evolution of the magnetic, structural, and electronic phase transitions occurring in a wide temperature range, including quantitative measurements of the high- A nd low-temperature phase fractions for each transition. The results reveal a stable coexistence of the high- A nd low-temperature phases over a broad temperature range throughout the transition. Careful comparison of temperature dependence of the different measurements, calibrated by the resistance of the sample, demonstrates that the electronic, magnetic, and structural degrees of freedom remain tightly coupled to each other during the transition process. We also find evidence for antiferromagnetic fluctuations in the vicinity of the phase transition, highlighting the important role of the magnetic degree of freedom in the metal-insulator transition.",

author = "Frandsen, {Benjamin A.} and Yoav Kalcheim and Ilya Valmianski and Mcleod, {Alexander S.} and Z. Guguchia and Cheung, {Sky C.} and Hallas, {Alannah M.} and Wilson, {Murray N.} and Yipeng Cai and Luke, {Graeme M.} and Z. Salman and A. Suter and T. Prokscha and Taito Murakami and Hiroshi Kageyama and Basov, {D. N.} and Schuller, {Ivan K.} and Uemura, {Yasutomo J.}",

note = "Funding Information: This is a highly collaborative research effort. Experiments were designed jointly and the manuscript was written in multiple iterations by all coauthors. This work is based on experiments performed at the Swiss Muon Source SµS, Paul Scherrer Institute, Villigen, Switzerland. Synthesis, structure, and transport measurements were performed at UCSD (Y.K., I.V., and I.K.S) under Grant No. DE-FG02-87ER-45322. Work at Columbia University was supported by the US National Science Foundation (NSF) via Grant No. DMREF DMR-1436095, NSF Grant No. DMR-1105961, NSF Grant No. DMR-1610633, and the NSF PIRE program through Grant No. OISE-0968226, with additional support from the Japan Atomic Energy Agency Reimei Project and the Friends of Todai Foundation. B.A.F. acknowledges support from the NSF GRFP under Grant No. DGE-11-44155 and support from the College of Physical and Mathematical Sciences at Brigham Young Univeresity. A.S.M. and D.N.B. are supported by ARO Grant W911NF-17-1-0543. Development of nano-optical instrumentation at Columbia is supported by AFOSR FA9550-15-1-0478. Work at Kyoto University was supported by JSPS Core-to-Core Program (a) Advanced Research Networks. Publisher Copyright: {\textcopyright} 2019 American Physical Society.",

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T1 - Intertwined magnetic, structural, and electronic transitions in V2O3

AU - Frandsen, Benjamin A.

AU - Kalcheim, Yoav

AU - Valmianski, Ilya

AU - Mcleod, Alexander S.

AU - Guguchia, Z.

AU - Cheung, Sky C.

AU - Hallas, Alannah M.

AU - Wilson, Murray N.

AU - Cai, Yipeng

AU - Luke, Graeme M.

AU - Salman, Z.

AU - Suter, A.

AU - Prokscha, T.

AU - Murakami, Taito

AU - Kageyama, Hiroshi

AU - Basov, D. N.

AU - Schuller, Ivan K.

AU - Uemura, Yasutomo J.

N1 - Funding Information: This is a highly collaborative research effort. Experiments were designed jointly and the manuscript was written in multiple iterations by all coauthors. This work is based on experiments performed at the Swiss Muon Source SµS, Paul Scherrer Institute, Villigen, Switzerland. Synthesis, structure, and transport measurements were performed at UCSD (Y.K., I.V., and I.K.S) under Grant No. DE-FG02-87ER-45322. Work at Columbia University was supported by the US National Science Foundation (NSF) via Grant No. DMREF DMR-1436095, NSF Grant No. DMR-1105961, NSF Grant No. DMR-1610633, and the NSF PIRE program through Grant No. OISE-0968226, with additional support from the Japan Atomic Energy Agency Reimei Project and the Friends of Todai Foundation. B.A.F. acknowledges support from the NSF GRFP under Grant No. DGE-11-44155 and support from the College of Physical and Mathematical Sciences at Brigham Young Univeresity. A.S.M. and D.N.B. are supported by ARO Grant W911NF-17-1-0543. Development of nano-optical instrumentation at Columbia is supported by AFOSR FA9550-15-1-0478. Work at Kyoto University was supported by JSPS Core-to-Core Program (a) Advanced Research Networks. Publisher Copyright: © 2019 American Physical Society.

PY - 2019/12/23

Y1 - 2019/12/23

N2 - We present a coordinated study of the paramagnetic-to-antiferromagnetic, rhombohedral-to-monoclinic, and metal-to-insulator transitions in thin-film specimens of the classic Mott insulator V2O3 using low-energy muon spin relaxation, X-ray diffraction, and nanoscale-resolved near-field infrared spectroscopic techniques. The measurements provide a detailed characterization of the thermal evolution of the magnetic, structural, and electronic phase transitions occurring in a wide temperature range, including quantitative measurements of the high- A nd low-temperature phase fractions for each transition. The results reveal a stable coexistence of the high- A nd low-temperature phases over a broad temperature range throughout the transition. Careful comparison of temperature dependence of the different measurements, calibrated by the resistance of the sample, demonstrates that the electronic, magnetic, and structural degrees of freedom remain tightly coupled to each other during the transition process. We also find evidence for antiferromagnetic fluctuations in the vicinity of the phase transition, highlighting the important role of the magnetic degree of freedom in the metal-insulator transition.

AB - We present a coordinated study of the paramagnetic-to-antiferromagnetic, rhombohedral-to-monoclinic, and metal-to-insulator transitions in thin-film specimens of the classic Mott insulator V2O3 using low-energy muon spin relaxation, X-ray diffraction, and nanoscale-resolved near-field infrared spectroscopic techniques. The measurements provide a detailed characterization of the thermal evolution of the magnetic, structural, and electronic phase transitions occurring in a wide temperature range, including quantitative measurements of the high- A nd low-temperature phase fractions for each transition. The results reveal a stable coexistence of the high- A nd low-temperature phases over a broad temperature range throughout the transition. Careful comparison of temperature dependence of the different measurements, calibrated by the resistance of the sample, demonstrates that the electronic, magnetic, and structural degrees of freedom remain tightly coupled to each other during the transition process. We also find evidence for antiferromagnetic fluctuations in the vicinity of the phase transition, highlighting the important role of the magnetic degree of freedom in the metal-insulator transition.

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DO - 10.1103/PhysRevB.100.235136

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Intertwined magnetic, structural, and electronic transitions in V2O3

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