Exchange Interaction Effects on the Optical Properties of [Formula presented]

A. B. Souchkov; J. R. Simpson; M. Quijada; H. Ishibashi; N. Hur; J. S. Ahn; S. W. Cheong; A. J. Millis; H. D. Drew

doi:10.1103/PhysRevLett.91.027203

Exchange Interaction Effects on the Optical Properties of [Formula presented]

A. B. Souchkov, J. R. Simpson, M. Quijada, H. Ishibashi, N. Hur, J. S. Ahn, S. W. Cheong, A. J. Millis, H. D. Drew

School of Arts and Sciences, Physics & Astronomy

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

4 Scopus citations

Abstract

We have measured the optical conductivity of single crystal [Formula presented] from 10 to [Formula presented] at temperatures between 4 and 300 K. A symmetry allowed on-site Mn [Formula presented] transition near 1.7 eV is observed to blueshift ([Formula presented]) in the antiferromagnetic state due to Mn Mn superexchange interactions. Similar anomalies are observed in the temperature dependence of the TO phonon frequencies which arise from spin-phonon interaction. We find that the known anomaly in the temperature dependence of the quasistatic dielectric constant [Formula presented] below [Formula presented] is overwhelmingly dominated by the phonon contributions.

Original language	English (US)
Journal	Physical review letters
Volume	91
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.91.027203
State	Published - Jul 10 2003

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1103/PhysRevLett.91.027203

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title = "Exchange Interaction Effects on the Optical Properties of [Formula presented] ",

abstract = "We have measured the optical conductivity of single crystal [Formula presented] from 10 to [Formula presented] at temperatures between 4 and 300 K. A symmetry allowed on-site Mn [Formula presented] transition near 1.7 eV is observed to blueshift ([Formula presented]) in the antiferromagnetic state due to Mn Mn superexchange interactions. Similar anomalies are observed in the temperature dependence of the TO phonon frequencies which arise from spin-phonon interaction. We find that the known anomaly in the temperature dependence of the quasistatic dielectric constant [Formula presented] below [Formula presented] is overwhelmingly dominated by the phonon contributions.",

author = "Souchkov, {A. B.} and Simpson, {J. R.} and M. Quijada and H. Ishibashi and N. Hur and Ahn, {J. S.} and Cheong, {S. W.} and Millis, {A. J.} and Drew, {H. D.}",

year = "2003",

month = jul,

day = "10",

doi = "10.1103/PhysRevLett.91.027203",

language = "English (US)",

volume = "91",

journal = "Physical review letters",

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TY - JOUR

T1 - Exchange Interaction Effects on the Optical Properties of [Formula presented]

AU - Souchkov, A. B.

AU - Simpson, J. R.

AU - Quijada, M.

AU - Ishibashi, H.

AU - Hur, N.

AU - Ahn, J. S.

AU - Cheong, S. W.

AU - Millis, A. J.

AU - Drew, H. D.

PY - 2003/7/10

Y1 - 2003/7/10

N2 - We have measured the optical conductivity of single crystal [Formula presented] from 10 to [Formula presented] at temperatures between 4 and 300 K. A symmetry allowed on-site Mn [Formula presented] transition near 1.7 eV is observed to blueshift ([Formula presented]) in the antiferromagnetic state due to Mn Mn superexchange interactions. Similar anomalies are observed in the temperature dependence of the TO phonon frequencies which arise from spin-phonon interaction. We find that the known anomaly in the temperature dependence of the quasistatic dielectric constant [Formula presented] below [Formula presented] is overwhelmingly dominated by the phonon contributions.

AB - We have measured the optical conductivity of single crystal [Formula presented] from 10 to [Formula presented] at temperatures between 4 and 300 K. A symmetry allowed on-site Mn [Formula presented] transition near 1.7 eV is observed to blueshift ([Formula presented]) in the antiferromagnetic state due to Mn Mn superexchange interactions. Similar anomalies are observed in the temperature dependence of the TO phonon frequencies which arise from spin-phonon interaction. We find that the known anomaly in the temperature dependence of the quasistatic dielectric constant [Formula presented] below [Formula presented] is overwhelmingly dominated by the phonon contributions.

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U2 - 10.1103/PhysRevLett.91.027203

DO - 10.1103/PhysRevLett.91.027203

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VL - 91

JO - Physical review letters

JF - Physical review letters

IS - 2

ER -

Exchange Interaction Effects on the Optical Properties of [Formula presented]

Abstract

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