Comparative study on the magnetic excitation spectra of Y123 and La214 high-Tc systems - are the dynamical stripes important?

M. Sato; M. Ito; H. Harashina; Y. Yasui; S. Iikubo; A. Kobayashi; K. Kakurai

doi:10.1016/S0921-4526(02)01990-7

Comparative study on the magnetic excitation spectra of Y123 and La214 high-T_c systems - are the dynamical stripes important?

M. Sato, M. Ito, H. Harashina, Y. Yasui, S. Iikubo, A. Kobayashi, K. Kakurai

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The magnetic spectra χ″ of YBa₂Cu₃O _6.5 are compared with calculated results by the expression χ(q, ω) = χ⁰(q, ω) / {1 + J(q)χ⁰(q, ω)} with J(q) = J(cos q_xa + cos q_ya). For the proper band parameters and other parameters, we obtained satisfactory agreement between experimental and calculated results without considering dynamical "stripes". The quasi particle broadening has been found to suppress the antiferromagnetic ordering. Effects of the dynamical "stripes" on χ″(q, ω) are clearly visible in La_2-xSr _xCuO₄, which is in clear contrast to the results of YBa₂Cu₃O_6.5.

Original language	English
Pages (from-to)	683-684
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	329-333
Issue number	II
DOIs	https://doi.org/10.1016/S0921-4526(02)01990-7
Publication status	Published - May 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Electrical and Electronic Engineering

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10.1016/S0921-4526(02)01990-7

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@article{c59c7715ac084f3fa1938b659e09b66d,

title = "Comparative study on the magnetic excitation spectra of Y123 and La214 high-Tc systems - are the dynamical stripes important?",

abstract = "The magnetic spectra χ″ of YBa2Cu3O 6.5 are compared with calculated results by the expression χ(q, ω) = χ0(q, ω) / {1 + J(q)χ0(q, ω)} with J(q) = J(cos qxa + cos qya). For the proper band parameters and other parameters, we obtained satisfactory agreement between experimental and calculated results without considering dynamical {"}stripes{"}. The quasi particle broadening has been found to suppress the antiferromagnetic ordering. Effects of the dynamical {"}stripes{"} on χ″(q, ω) are clearly visible in La2-xSr xCuO4, which is in clear contrast to the results of YBa2Cu3O6.5.",

author = "M. Sato and M. Ito and H. Harashina and Y. Yasui and S. Iikubo and A. Kobayashi and K. Kakurai",

year = "2003",

month = may,

doi = "10.1016/S0921-4526(02)01990-7",

language = "English",

volume = "329-333",

pages = "683--684",

journal = "Physica B: Condensed Matter",

issn = "0921-4526",