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Magnetic fluctuations and normal state properties of the t - J model at finite dopings

Technical Report:

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Abstract

A loop expansion beyond the mean field approximation is developed to study the effects of magnetic fluctuations on normal state properties of the t - J model at finite dopings, using the Schwinger boson approach. The calculated conductivity consists of a Drude peak and a broad band, while the electron density of states is linear in modul {omega} at the scale of J, in consistency with experiments on oxide superconductors. The antiferromagnetic nature of fluctuations is found to be essential for these properties. (author). 21 refs, 4 figs.
Authors:
Li, Y M; Yu, L; [1]  Sheng, D N; 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, 1991
Product Type:
Technical Report
Report Number:
IC-91/317
Reference Number:
SCA: 665411; PA: AIX-23:018440; SN: 92000662048
Resource Relation:
Other Information: PBD: Sep 1991
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; SUPERCONDUCTORS; MEAN-FIELD THEORY; ANTIFERROMAGNETISM; DOPED MATERIALS; FLUCTUATIONS; HAMILTONIANS; RENORMALIZATION; SCHWINGER TERMS; 665411; BASIC SUPERCONDUCTIVITY STUDIES
OSTI ID:
10118654
Research Organizations:
International Centre for Theoretical Physics (ICTP), Trieste (Italy)
Country of Origin:
IAEA
Language:
English
Other Identifying Numbers:
Other: ON: DE92617538; TRN: XA9230501018440
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
INIS
Size:
16 p.
Announcement Date:
Jun 30, 2005

Technical Report:

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Citation Formats

Li, Y M, Yu, L, Sheng, D N, and Su, Z B. Magnetic fluctuations and normal state properties of the t - J model at finite dopings. IAEA: N. p., 1991. Web.
Li, Y M, Yu, L, Sheng, D N, & Su, Z B. Magnetic fluctuations and normal state properties of the t - J model at finite dopings. IAEA.
Li, Y M, Yu, L, Sheng, D N, and Su, Z B. 1991. "Magnetic fluctuations and normal state properties of the t - J model at finite dopings." IAEA.
@misc{etde_10118654,
title = {Magnetic fluctuations and normal state properties of the t - J model at finite dopings}
 author = {Li, Y M, Yu, L, Sheng, D N, and Su, Z B}
 abstractNote = {A loop expansion beyond the mean field approximation is developed to study the effects of magnetic fluctuations on normal state properties of the t - J model at finite dopings, using the Schwinger boson approach. The calculated conductivity consists of a Drude peak and a broad band, while the electron density of states is linear in modul {omega} at the scale of J, in consistency with experiments on oxide superconductors. The antiferromagnetic nature of fluctuations is found to be essential for these properties. (author). 21 refs, 4 figs.}
 place = {IAEA}
 year = {1991}
 month = {Sep}
 }