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

Research output: Contribution to journal › Article › peer-review

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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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 = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

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doi = "10.1103/PhysRevB.94.161119",

language = "English (US)",

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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

PY - 2016/10/21

Y1 - 2016/10/21

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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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