Non-conventional infrared conductivity of La2CuO4.06 and Pr0.7Sr0.2Ca0.1MnO3

被引：3

作者：

Gervais, F ^{[1
]}

Daulan, C

Maignan, A

Lobo, RPSM

机构：

[1] Univ Tours, Lab Electrodynam Mat Avances, F-37200 Tours, France

[2] Inst Sci Mat & Rayonnement, CRISMAT, Unite Mixte Rech 6508, F-14050 Caen, France

[3] Brookhaven Natl Lab, Univ Florida, Dept Phys, Upton, NY 11793 USA

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 1998年 / 12卷 / 29-31期

关键词：

D O I：

10.1142/S0217979298002726

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Pr0.7Sr0.2Ca0.1MnO3 displays a ferromagnetic metallic-like to non-ferromagnetic insulator-like phase transition near 200 K and shows colossal magneto-resistance. The temperature evolution of its optical conductivity was measured and the results were compared to those of La2CuO4.06 which is a superconductor below 34 K. The growth of a peak in the conductivity around 10 meV upon cooling Pr0.7Sr0.2Ca0.1MnO3 strongly suggests a trapped-polaron contribution to the conductivity.

引用

页码：3393 / 3396

页数：4

共 13 条

[1] CONSIDERATIONS ON DOUBLE EXCHANGE [J].

ANDERSON, PW ;

HASEGAWA, H .

PHYSICAL REVIEW, 1955, 100 (02) :675-681

[2] PLASMON AND POLAR OPTICAL PHONONS IN REDUCED RUTILE TIO2-X [J].

BAUMARD, JF ;

GERVAIS, F .

PHYSICAL REVIEW B, 1977, 15 (04) :2316-2323

[3] EFFECTS OF DOUBLE EXCHANGE IN MAGNETIC CRYSTALS [J].

DEGENNES, PG .

PHYSICAL REVIEW, 1960, 118 (01) :141-154

[4]

Gervais F, 1983, INFRARED MILLIMETER, V8, P279

[5]

HETMANEK J, 1996, PHYS REV B, V54, P11947

[6] THOUSANDFOLD CHANGE IN RESISTIVITY IN MAGNETORESISTIVE LA-CA-MN-O FILMS [J].

JIN, S ;

TIEFEL, TH ;

MCCORMACK, M ;

FASTNACHT, RA ;

RAMESH, R ;

CHEN, LH .

SCIENCE, 1994, 264 (5157) :413-415

[7] The strange infrared conductivity of La2CuO4.06 [J].

Lobo, RPSM ;

Gervais, F ;

Oseroff, SB .

EUROPHYSICS LETTERS, 1997, 37 (05) :341-346

[8] Size of the interpolated cation and hole carrier density: Two key parameters for the optimisation of colossal magnetoresistive properties of Pr-based manganites [J].

Maignan, A ;

Simon, C ;

Caignaert, V ;

Raveau, B .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1996, 99 (03) :305-310

[9] Dynamic Jahn-Teller effect and colossal magnetoresistance in La1-xSrxMnO3 [J].

Millis, AJ ;

Shraiman, BI ;

Mueller, R .

PHYSICAL REVIEW LETTERS, 1996, 77 (01) :175-178

[10] SPECTACULAR GIANT MAGNETORESISTANCE EFFECTS IN THE POLYCRYSTALLINE PEROVSKITE PR(0.7)SR(0.05)CA(0.25)MNO3-DELTA [J].

RAVEAU, B ;

MAIGNAN, A ;

CAIGNAERT, V .

JOURNAL OF SOLID STATE CHEMISTRY, 1995, 117 (02) :424-426

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