Photo-induced phenomena in correlated electron system with spinstate degree of freedom

S. Ishihara; Y. Kanamori; Y. Inoue; H. Matsueda

doi:10.1016/j.phpro.2011.02.011

Photo-induced phenomena in correlated electron system with spinstate degree of freedom

S. Ishihara, Y. Kanamori, Y. Inoue, H. Matsueda

ENG - Applied Physics

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

Abstract

Photo-induced spin-state change in correlated electron systems is examined theoretically, motivated by the recent pump-probe experiments in perovskite cobaltites. Effective Hamiltonian for the photo-excited state is derived from the two-orbital Hubbard model. High-spin state is induced by the photo-irradiation in the low-spin ground state. We demonstrate that this photo-induced spin-state change is detected by the pump-probe spectroscopy.

Original language	English
Pages (from-to)	46-49
Number of pages	4
Journal	Physics Procedia
Volume	13
DOIs	https://doi.org/10.1016/j.phpro.2011.02.011
Publication status	Published - 2011

Keywords

Cobaltites
Pump-probe spectroscopy
Spin-state degree of freedom

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10.1016/j.phpro.2011.02.011

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title = "Photo-induced phenomena in correlated electron system with spinstate degree of freedom",

abstract = "Photo-induced spin-state change in correlated electron systems is examined theoretically, motivated by the recent pump-probe experiments in perovskite cobaltites. Effective Hamiltonian for the photo-excited state is derived from the two-orbital Hubbard model. High-spin state is induced by the photo-irradiation in the low-spin ground state. We demonstrate that this photo-induced spin-state change is detected by the pump-probe spectroscopy.",

keywords = "Cobaltites, Pump-probe spectroscopy, Spin-state degree of freedom",

author = "S. Ishihara and Y. Kanamori and Y. Inoue and H. Matsueda",

note = "Funding Information: Authors would like to thank S. Koshihara, Y. Okimoto and S. Iwai and for their valuable discussions. This work was supported by JSPS KAKENHI, CREST, Tohoku University ³Evolution program´ and Grand challenges in next-generation integrated nanoscience.",

year = "2011",

doi = "10.1016/j.phpro.2011.02.011",

language = "English",

volume = "13",

pages = "46--49",

journal = "Physics Procedia",

issn = "1875-3884",

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TY - JOUR

T1 - Photo-induced phenomena in correlated electron system with spinstate degree of freedom

AU - Ishihara, S.

AU - Kanamori, Y.

AU - Inoue, Y.

AU - Matsueda, H.

N1 - Funding Information: Authors would like to thank S. Koshihara, Y. Okimoto and S. Iwai and for their valuable discussions. This work was supported by JSPS KAKENHI, CREST, Tohoku University ³Evolution program´ and Grand challenges in next-generation integrated nanoscience.

PY - 2011

Y1 - 2011

N2 - Photo-induced spin-state change in correlated electron systems is examined theoretically, motivated by the recent pump-probe experiments in perovskite cobaltites. Effective Hamiltonian for the photo-excited state is derived from the two-orbital Hubbard model. High-spin state is induced by the photo-irradiation in the low-spin ground state. We demonstrate that this photo-induced spin-state change is detected by the pump-probe spectroscopy.

AB - Photo-induced spin-state change in correlated electron systems is examined theoretically, motivated by the recent pump-probe experiments in perovskite cobaltites. Effective Hamiltonian for the photo-excited state is derived from the two-orbital Hubbard model. High-spin state is induced by the photo-irradiation in the low-spin ground state. We demonstrate that this photo-induced spin-state change is detected by the pump-probe spectroscopy.

KW - Cobaltites

KW - Pump-probe spectroscopy

KW - Spin-state degree of freedom

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DO - 10.1016/j.phpro.2011.02.011

M3 - Article

AN - SCOPUS:79959398525

SN - 1875-3884

VL - 13

SP - 46

EP - 49

JO - Physics Procedia

JF - Physics Procedia

ER -

Photo-induced phenomena in correlated electron system with spinstate degree of freedom

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Keywords

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