Observation of Cu NMR in antiferromagnetic PrBa sub 2 Cu sub 3 O sub 7 : Evidence for hole-band filling

Journal Article · Wed Aug 01 00:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.2688· OSTI ID:6483056

Reyes, A P; MacLaughlin, D E ^[1]; Takigawa, M; Hammel, P C; Heffner, R H; Thompson, J D ^[2]; Crow, J E; Kebede, A; Mihalisin, T; Schwegler, J ^[3]

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1. University of California, Riverside, CA (USA)
2. Los Alamos National Laboratory, Los Alamos, NM (USA)
3. Temple University, Philadelphia, PA (USA)

Copper nuclear magnetic resonance (NMR) has been observed at plane and chain Cu sites in PrBa{sub 2}Cu{sub 3}O{sub 7}. The field-swept NMR signal from plane Cu sites disappears due to magnetic ordering below {approximately}280 K. In the antiferromagnetic state ({ital T}=1.4 K) quadrupole-split NMR spectra from plane-site Cu nuclei can be fit using an axial electric-field gradient ({nu}{sub {ital Q}}=17{plus minus}2 MHz) and an internal field {ital H}{sub int}=65.2{plus minus}0.2 kOe directed at an angle 79{degree}{plus minus}1{degree} to the {ital c} axis. The observation of plane-Cu magnetism is consistent with the absence of doped holes on CuO{sub 2} planes in PrBa{sub 2}Cu{sub 3}O{sub 7}, which supports the view that hole filling is important in suppressing superconductivity in Y{sub 1{minus}{ital x}}Pr{sub {ital x}}Ba{sub 2}Cu{sub 3}O{sub 7}.

• OSTI ID: 6483056
• Journal Information: Physical Review, B: Condensed Matter; (USA), Vol. 42:4; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
MAGNETIC PROPERTIES
COPPER 63
NUCLEAR MAGNETIC RESONANCE
COPPER OXIDES
PRASEODYMIUM OXIDES
ANTIFERROMAGNETISM
HOLES
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER ISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MAGNETIC RESONANCE
MAGNETISM
NUCLEI
ODD-EVEN NUCLEI
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
PRASEODYMIUM COMPOUNDS
RARE EARTH COMPOUNDS
RESONANCE
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties