Optical evidence of multiphase coexistence in single crystalline (La, Pr, Ca)MnO3

H. J. Lee; K. H. Kim; M. W. Kim; T. W. Noh; B. G. Kim; T. Y. Koo; S. W. Cheong; Y. J. Wang; X. Wei

Optical evidence of multiphase coexistence in single crystalline (La, Pr, Ca)MnO₃

H. J. Lee, K. H. Kim, M. W. Kim, T. W. Noh, B. G. Kim, T. Y. Koo, S. W. Cheong, Y. J. Wang, X. Wei

School of Arts and Sciences, Physics & Astronomy

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52 Scopus citations

Abstract

We investigated temperature (T)- and magnetic field-dependent optical conductivity spectra σ(ω) of a La_5/8-yPr_yCa_3/8MnO₃(y≈0.35) single crystal, showing intriguing phase coexistence at low T. At T_c<T <T_CO, a dominant charge-ordered phase produces a large optical gap energy of ∼0.4 eV. At T<Tc, at least two absorption bands newly emerge below 0.4 eV. Analyses of σ(ω) indicate that the bands should be attributed to a ferromagnetic metallic phase and a charge-disordered phase that coexist with the charge-ordered phase. This optical study clearly shows that La_5/8-yPr_yCa_3/8MnO₃(Y≈0.35) is composed of multiphases that might have different lattice strains.

Original language	English (US)
Article number	115118
Pages (from-to)	1151181-1151186
Number of pages	6
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	65
Issue number	11
State	Published - Mar 15 2002

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Cite this

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title = "Optical evidence of multiphase coexistence in single crystalline (La, Pr, Ca)MnO3",

abstract = "We investigated temperature (T)- and magnetic field-dependent optical conductivity spectra σ(ω) of a La5/8-yPryCa3/8MnO3(y≈0.35) single crystal, showing intriguing phase coexistence at low T. At Tc<T <TCO, a dominant charge-ordered phase produces a large optical gap energy of ∼0.4 eV. At T<Tc, at least two absorption bands newly emerge below 0.4 eV. Analyses of σ(ω) indicate that the bands should be attributed to a ferromagnetic metallic phase and a charge-disordered phase that coexist with the charge-ordered phase. This optical study clearly shows that La5/8-yPryCa3/8MnO3(Y≈0.35) is composed of multiphases that might have different lattice strains.",

author = "Lee, {H. J.} and Kim, {K. H.} and Kim, {M. W.} and Noh, {T. W.} and Kim, {B. G.} and Koo, {T. Y.} and Cheong, {S. W.} and Wang, {Y. J.} and X. Wei",

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TY - JOUR

T1 - Optical evidence of multiphase coexistence in single crystalline (La, Pr, Ca)MnO3

AU - Lee, H. J.

AU - Kim, K. H.

AU - Kim, M. W.

AU - Noh, T. W.

AU - Kim, B. G.

AU - Koo, T. Y.

AU - Cheong, S. W.

AU - Wang, Y. J.

AU - Wei, X.

PY - 2002/3/15

Y1 - 2002/3/15

N2 - We investigated temperature (T)- and magnetic field-dependent optical conductivity spectra σ(ω) of a La5/8-yPryCa3/8MnO3(y≈0.35) single crystal, showing intriguing phase coexistence at low T. At Tc<T <TCO, a dominant charge-ordered phase produces a large optical gap energy of ∼0.4 eV. At T<Tc, at least two absorption bands newly emerge below 0.4 eV. Analyses of σ(ω) indicate that the bands should be attributed to a ferromagnetic metallic phase and a charge-disordered phase that coexist with the charge-ordered phase. This optical study clearly shows that La5/8-yPryCa3/8MnO3(Y≈0.35) is composed of multiphases that might have different lattice strains.

AB - We investigated temperature (T)- and magnetic field-dependent optical conductivity spectra σ(ω) of a La5/8-yPryCa3/8MnO3(y≈0.35) single crystal, showing intriguing phase coexistence at low T. At Tc<T <TCO, a dominant charge-ordered phase produces a large optical gap energy of ∼0.4 eV. At T<Tc, at least two absorption bands newly emerge below 0.4 eV. Analyses of σ(ω) indicate that the bands should be attributed to a ferromagnetic metallic phase and a charge-disordered phase that coexist with the charge-ordered phase. This optical study clearly shows that La5/8-yPryCa3/8MnO3(Y≈0.35) is composed of multiphases that might have different lattice strains.

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M3 - Article

AN - SCOPUS:0037088171

SN - 1098-0121

VL - 65

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JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

IS - 11

M1 - 115118

ER -

Optical evidence of multiphase coexistence in single crystalline (La, Pr, Ca)MnO₃

Abstract

All Science Journal Classification (ASJC) codes

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