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Schwinger-boson studies of the single hole motion in a 2d quantum antiferromagnet

Technical Report:

Abstract

Within the Schwinger-boson approach for the t-J model, the single hole problem in a two-dimensional quantum antiferromagnet is studied by using the quantum Bogoliubov-de Gennes formalism which treats the distortion of the spin background and quantum spin fluctuations on an equal footing. Several self-trapped localized hole states are found in the distorted spin-background as in the case of an anisotropic Heisenberg model. These localized hole states survive at finite temperatures when the antiferromagnetic order becomes short-ranged. The energy separation between the two lowest states is reduced by considering the spin-background distortion, but it remains finite. (author). 17 refs, 5 figs, 1 tab.
Authors:
Wu, C Q; Yu, L; [1]  Su, Z B [2] 
  1. International Centre for Theoretical Physics, Trieste (Italy)
  2. Academia Sinica, Beijing, BJ (China). Inst. of Theoretical Physics
Publication Date:
Sep 01, 1994
Product Type:
Technical Report
Report Number:
IC-94/272
Reference Number:
SCA: 665400; PA: AIX-26:014019; EDB-95:033010; SN: 95001325768
Resource Relation:
Other Information: PBD: Sep 1994
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ANTIFERROMAGNETIC MATERIALS; BOGOLYUBOV METHOD; HOLES; GREEN FUNCTION; HEISENBERG MODEL; HIGH-TC SUPERCONDUCTORS; ORDER PARAMETERS; SCHWINGER VARIATIONAL METHOD; SPIN; TWO-DIMENSIONAL CALCULATIONS; WAVE FUNCTIONS; 665400; QUANTUM PHYSICS ASPECTS OF CONDENSED MATTER
OSTI ID:
10112975
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ON: DE95614444; TRN: XA9438394014019
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
17 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Wu, C Q, Yu, L, and Su, Z B. Schwinger-boson studies of the single hole motion in a 2d quantum antiferromagnet. IAEA: N. p., 1994. Web.
Wu, C Q, Yu, L, & Su, Z B. Schwinger-boson studies of the single hole motion in a 2d quantum antiferromagnet. IAEA.
Wu, C Q, Yu, L, and Su, Z B. 1994. "Schwinger-boson studies of the single hole motion in a 2d quantum antiferromagnet." IAEA.
@misc{etde_10112975,
title = {Schwinger-boson studies of the single hole motion in a 2d quantum antiferromagnet}
author = {Wu, C Q, Yu, L, and Su, Z B}
abstractNote = {Within the Schwinger-boson approach for the t-J model, the single hole problem in a two-dimensional quantum antiferromagnet is studied by using the quantum Bogoliubov-de Gennes formalism which treats the distortion of the spin background and quantum spin fluctuations on an equal footing. Several self-trapped localized hole states are found in the distorted spin-background as in the case of an anisotropic Heisenberg model. These localized hole states survive at finite temperatures when the antiferromagnetic order becomes short-ranged. The energy separation between the two lowest states is reduced by considering the spin-background distortion, but it remains finite. (author). 17 refs, 5 figs, 1 tab.}
place = {IAEA}
year = {1994}
month = {Sep}
}