Growth of the optical conductivity in the Cu-O planes

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.41.11605· OSTI ID:7093692

Cooper, S L; Thomas, G A; Orenstein, J; Rapkine, D H; Millis, A J; Cheong, S; Cooper, A S ^[1]; Fisk, Z ^[2]

---

1. AT T Bell Laboratories, Murray Hill, New Jersey 07974 (USA)
2. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (USA)

We have studied the development of the optical conductivity as electrons are added to the Cu-O planes in Pr{sub 2{minus}{ital x}}Ce{sub {ital x}}CuO{sub 4{minus}{delta}} by varying {ital x}(0{le}{ital x}{le}0.2). In the metallic phases, contributions to the optical conductivity below 3 eV arise from three sources: mobile carriers, mid-infrared excitations, and charge-transfer excitations. The mobile carrier spectral weight grows roughly linearly with {ital x}, while the mid-infrared band appears to evolve at low doping via a transfer of spectral weight from the charge-transfer band. Comparing these results with hole doping in La{sub 2{minus}{ital x}}Sr{sub {ital x}}CuO{sub 4{minus}{delta}} indicates an electron-hole symmetry that is not anticipated by standard charge-transfer insulator models.

• OSTI ID: 7093692
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 41:16; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERIUM COMPOUNDS
CERIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HIGH-TC SUPERCONDUCTORS
OPTICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHOTOCONDUCTIVITY
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
PRASEODYMIUM OXIDES
RARE EARTH COMPOUNDS
SUPERCONDUCTORS
TRANSITION ELEMENT COMPOUNDS
TYPE-II SUPERCONDUCTORS