Theory of static and resonance properties of magnetically ordered phases of high-temperature superconductors in magnetic fields I. La sub 2 CuO sub 4

Journal Article · Sun Jan 01 00:00:00 EST 1989 · Superconductivity; (USA)

OSTI ID:7142579

Bar'yakhtar, V G ^[1]; Loktev, V M ^[2]; Yablonskii, D A ^[3]

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1. Institute of Mathematical Physics, Academy of Sciences of the Ukrainian SSR, Kiev (UA)
2. Institute of Theoretical Physics, Academy of Sciences of the Ukrainian SSR, Kiev (UA)
3. Donetsk Physical and Technical Institute, Academy of Sciences of the Ukrainian SSR, Donetsk (UA)

The spin structure, susceptibility, and resonance frequencies (the antiferromagnetic resonance frequencies) of the magnetically ordered phases of a La{sub 2}CuO{sub 4} crystal have been studied. The 4-sublattice model is used to calculate the magnetization and static susceptibility of a crystal in a magnetic field directed longitudinally and transversely to the basic structure antiferromagnetism vector. It is shown that these exchange modes are the soft modes for the spin-flip phase transitions with a variable number of magnetic sublattices.

• OSTI ID: 7142579
• Journal Information: Superconductivity; (USA), Vol. 2:1
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COPPER OXIDES
MAGNETIC PROPERTIES
LANTHANUM OXIDES
ANTIFERROMAGNETISM
HAMILTONIANS
MAGNETIC FIELDS
MAGNETIC RESONANCE
MAGNETIZATION
SPIN
SUPERCONDUCTIVITY
ANGULAR MOMENTUM
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LANTHANUM COMPOUNDS
MAGNETISM
MATHEMATICAL OPERATORS
OXIDES
OXYGEN COMPOUNDS
PARTICLE PROPERTIES
PHYSICAL PROPERTIES
QUANTUM OPERATORS
RARE EARTH COMPOUNDS
RESONANCE
TRANSITION ELEMENT COMPOUNDS
360204* - Ceramics
Cermets
& Refractories- Physical Properties
656100 - Condensed Matter Physics- Superconductivity