Measurement of collective excitations in VO2 by resonant inelastic x-ray scattering

Haowei He; A. X. Gray; P. Granitzka; J. W. Jeong; N. P. Aetukuri; R. Kukreja; Lin Miao; S. Alexander Breitweiser; Jinpeng Wu; Y. B. Huang; P. Olalde-Velasco; J. Pelliciari; W. F. Schlotter; E. Arenholz; T. Schmitt; M. G. Samant; S. S.P. Parkin; H. A. Dürr; L. Andrew Wray

doi:10.1103/PhysRevB.94.161119

Measurement of collective excitations in VO2 by resonant inelastic x-ray scattering

Haowei He, A. X. Gray, P. Granitzka, J. W. Jeong, N. P. Aetukuri, R. Kukreja, Lin Miao, S. Alexander Breitweiser, Jinpeng Wu, Y. B. Huang, P. Olalde-Velasco, J. Pelliciari, W. F. Schlotter, E. Arenholz, T. Schmitt, M. G. Samant, S. S.P. Parkin, H. A. Dürr, L. Andrew Wray

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Abstract

Vanadium dioxide is of broad interest as a spin-12 electron system that realizes a metal-insulator transition near room temperature, due to a combination of strongly correlated and itinerant electron physics. Here, resonant inelastic x-ray scattering is used to measure the excitation spectrum of charge and spin degrees of freedom at the vanadium L edge under different polarization and temperature conditions, revealing excitations that differ greatly from those seen in optical measurements. These spectra encode the evolution of short-range energetics across the metal-insulator transition, including the low-temperature appearance of a strong candidate for the singlet-triplet excitation of a vanadium dimer.

Original language	English (US)
Article number	161119
Journal	Physical Review B
Volume	94
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.94.161119
State	Published - Oct 21 2016

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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He, H., Gray, A. X., Granitzka, P., Jeong, J. W., Aetukuri, N. P., Kukreja, R., Miao, L., Breitweiser, S. A., Wu, J., Huang, Y. B., Olalde-Velasco, P., Pelliciari, J., Schlotter, W. F., Arenholz, E., Schmitt, T., Samant, M. G., Parkin, S. S. P., Dürr, H. A., & Wray, L. A. (2016). Measurement of collective excitations in VO2 by resonant inelastic x-ray scattering. Physical Review B, 94(16), Article 161119. https://doi.org/10.1103/PhysRevB.94.161119

He, H, Gray, AX, Granitzka, P, Jeong, JW, Aetukuri, NP, Kukreja, R, Miao, L, Breitweiser, SA, Wu, J, Huang, YB, Olalde-Velasco, P, Pelliciari, J, Schlotter, WF, Arenholz, E, Schmitt, T, Samant, MG, Parkin, SSP, Dürr, HA & Wray, LA 2016, 'Measurement of collective excitations in VO2 by resonant inelastic x-ray scattering', Physical Review B, vol. 94, no. 16, 161119. https://doi.org/10.1103/PhysRevB.94.161119

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title = "Measurement of collective excitations in VO2 by resonant inelastic x-ray scattering",

abstract = "Vanadium dioxide is of broad interest as a spin-12 electron system that realizes a metal-insulator transition near room temperature, due to a combination of strongly correlated and itinerant electron physics. Here, resonant inelastic x-ray scattering is used to measure the excitation spectrum of charge and spin degrees of freedom at the vanadium L edge under different polarization and temperature conditions, revealing excitations that differ greatly from those seen in optical measurements. These spectra encode the evolution of short-range energetics across the metal-insulator transition, including the low-temperature appearance of a strong candidate for the singlet-triplet excitation of a vanadium dimer.",

author = "Haowei He and Gray, {A. X.} and P. Granitzka and Jeong, {J. W.} and Aetukuri, {N. P.} and R. Kukreja and Lin Miao and Breitweiser, {S. Alexander} and Jinpeng Wu and Huang, {Y. B.} and P. Olalde-Velasco and J. Pelliciari and Schlotter, {W. F.} and E. Arenholz and T. Schmitt and Samant, {M. G.} and Parkin, {S. S.P.} and D{\"u}rr, {H. A.} and Wray, {L. Andrew}",

note = "Funding Information: Work at NYU was supported by the MRSEC Program of the National Science Foundation under Award No. DMR-1420073. A.X.G. acknowledges support from the U.S. Army Research Office, under Grant No. W911NF-15-1-0181 during the writing of this paper. Research at Stanford was supported through the Stanford Institute for Materials and Energy Sciences (SIMES) under Contract No. DE-AC02-76SF00515 and the LCLS by the U.S. Department of Energy, Office of Basic Energy Sciences. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, U.S. Department of Energy under Contract No. DE-AC02-05CH11231. J.P. and T.S. acknowledge financial support through the Dysenos AG by Kabelwerke Brugg AG Holding, Fachhochschule Nordwestschweiz, and the Paul Scherrer Institut. Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

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doi = "10.1103/PhysRevB.94.161119",

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AU - He, Haowei

AU - Gray, A. X.

AU - Granitzka, P.

AU - Jeong, J. W.

AU - Aetukuri, N. P.

AU - Kukreja, R.

AU - Miao, Lin

AU - Breitweiser, S. Alexander

AU - Wu, Jinpeng

AU - Huang, Y. B.

AU - Olalde-Velasco, P.

AU - Pelliciari, J.

AU - Schlotter, W. F.

AU - Arenholz, E.

AU - Schmitt, T.

AU - Samant, M. G.

AU - Parkin, S. S.P.

AU - Dürr, H. A.

AU - Wray, L. Andrew

N1 - Funding Information: Work at NYU was supported by the MRSEC Program of the National Science Foundation under Award No. DMR-1420073. A.X.G. acknowledges support from the U.S. Army Research Office, under Grant No. W911NF-15-1-0181 during the writing of this paper. Research at Stanford was supported through the Stanford Institute for Materials and Energy Sciences (SIMES) under Contract No. DE-AC02-76SF00515 and the LCLS by the U.S. Department of Energy, Office of Basic Energy Sciences. The Advanced Light Source is supported by the Director, Office of Science, Office of Basic Energy Sciences, U.S. Department of Energy under Contract No. DE-AC02-05CH11231. J.P. and T.S. acknowledge financial support through the Dysenos AG by Kabelwerke Brugg AG Holding, Fachhochschule Nordwestschweiz, and the Paul Scherrer Institut. Publisher Copyright: © 2016 American Physical Society.

PY - 2016/10/21

Y1 - 2016/10/21

N2 - Vanadium dioxide is of broad interest as a spin-12 electron system that realizes a metal-insulator transition near room temperature, due to a combination of strongly correlated and itinerant electron physics. Here, resonant inelastic x-ray scattering is used to measure the excitation spectrum of charge and spin degrees of freedom at the vanadium L edge under different polarization and temperature conditions, revealing excitations that differ greatly from those seen in optical measurements. These spectra encode the evolution of short-range energetics across the metal-insulator transition, including the low-temperature appearance of a strong candidate for the singlet-triplet excitation of a vanadium dimer.

AB - Vanadium dioxide is of broad interest as a spin-12 electron system that realizes a metal-insulator transition near room temperature, due to a combination of strongly correlated and itinerant electron physics. Here, resonant inelastic x-ray scattering is used to measure the excitation spectrum of charge and spin degrees of freedom at the vanadium L edge under different polarization and temperature conditions, revealing excitations that differ greatly from those seen in optical measurements. These spectra encode the evolution of short-range energetics across the metal-insulator transition, including the low-temperature appearance of a strong candidate for the singlet-triplet excitation of a vanadium dimer.

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Measurement of collective excitations in VO2 by resonant inelastic x-ray scattering

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