Mobile holes in a two-dimensional Heisenberg antiferromagnet

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

DOI:https://doi.org/10.1103/PhysRevB.42.4834· OSTI ID:6359615

Itoh, T; Arai, M; Fujiwara, T ^[1]

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1. Department of Applied Physics, University of Tokyo, Bunkyo-ku, Tokyo 113 (Japan)

Th {ital t}-{ital t}{prime}-{ital t}{prime}{prime}-{ital J} model is investigated by a rigorous diagonalization in a two-dimensional square lattice as large as {radical}20 {times} {radical}20 , which has no additional degeneracy. The ground state of one hole in the {ital t}-{ital J} model is at a momentum {bold k} near ({plus minus}{pi}/2,{plus minus}{pi}/2) with a total spin {ital S}=1/2 and that of two holes is at {bold k}=(0,0) with {ital S}=0. The hole pairing and nonclustering may be preferable for the ground state of the {ital t}-{ital t}{prime}-{ital t}{prime}{prime}-{ital J} model in the region of {ital t}{prime}{gt}0 and {ital t}{prime}{prime}{approx lt}0.

• OSTI ID: 6359615
• Journal Information: Physical Review, B: Condensed Matter; (USA), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:7; ISSN 0163-1829; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
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CHARGE CARRIERS
CRYSTAL MODELS
ENERGY LEVELS
GROUND STATES
HEISENBERG MODEL
HIGH-TC SUPERCONDUCTORS
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MAGNETIC MATERIALS
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MOBILITY
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