Spin-freezing in the layered perovskites La2CoxCu1-xO4 + δ

A. Lappas; K. Prassides; A. Amato; R. Feyerherm; F. N. Gygax; A. Schenck

doi:10.1016/0304-8853(94)01440-X

Spin-freezing in the layered perovskites La₂Co_xCu_1-xO_{4 + δ}

A. Lappas, K. Prassides, A. Amato, R. Feyerherm, F. N. Gygax, A. Schenck

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

3 Citations (Scopus)

Abstract

The muon-spin relaxation (μ⁺SR) technique was used to investigate the spin glass phase of La₂Co_0.75Cu_0.25O_4.16 (T_f ≈ 30 K), an oxygen-rich Mott-Hubbard insulator, isostructural with the high-T_c La₂CuO_{4 + δ} superconductor. On approaching T_f from above, the μ⁺-spin dynamics are described by a stretched exponential decay with rapid growth of the correlation times, reminiscent of the spin freezing process in Ising spin glasses.

Original language	English
Pages (from-to)	1291-1292
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	140-144
Issue number	PART 2
DOIs	https://doi.org/10.1016/0304-8853(94)01440-X
Publication status	Published - 1995 Feb
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/0304-8853(94)01440-X

Cite this

@article{5ca55812487d4d48a6a34a516f4254d3,

title = "Spin-freezing in the layered perovskites La2CoxCu1-xO4 + δ",

abstract = "The muon-spin relaxation (μ+SR) technique was used to investigate the spin glass phase of La2Co0.75Cu0.25O4.16 (Tf ≈ 30 K), an oxygen-rich Mott-Hubbard insulator, isostructural with the high-Tc La2CuO4 + δ superconductor. On approaching Tf from above, the μ+-spin dynamics are described by a stretched exponential decay with rapid growth of the correlation times, reminiscent of the spin freezing process in Ising spin glasses.",

author = "A. Lappas and K. Prassides and A. Amato and R. Feyerherm and Gygax, {F. N.} and A. Schenck",

year = "1995",

month = feb,

doi = "10.1016/0304-8853(94)01440-X",

language = "English",

volume = "140-144",

pages = "1291--1292",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "PART 2",

}

TY - JOUR

T1 - Spin-freezing in the layered perovskites La2CoxCu1-xO4 + δ

AU - Lappas, A.

AU - Prassides, K.

AU - Amato, A.

AU - Feyerherm, R.

AU - Gygax, F. N.

AU - Schenck, A.

PY - 1995/2

Y1 - 1995/2

N2 - The muon-spin relaxation (μ+SR) technique was used to investigate the spin glass phase of La2Co0.75Cu0.25O4.16 (Tf ≈ 30 K), an oxygen-rich Mott-Hubbard insulator, isostructural with the high-Tc La2CuO4 + δ superconductor. On approaching Tf from above, the μ+-spin dynamics are described by a stretched exponential decay with rapid growth of the correlation times, reminiscent of the spin freezing process in Ising spin glasses.

AB - The muon-spin relaxation (μ+SR) technique was used to investigate the spin glass phase of La2Co0.75Cu0.25O4.16 (Tf ≈ 30 K), an oxygen-rich Mott-Hubbard insulator, isostructural with the high-Tc La2CuO4 + δ superconductor. On approaching Tf from above, the μ+-spin dynamics are described by a stretched exponential decay with rapid growth of the correlation times, reminiscent of the spin freezing process in Ising spin glasses.

UR - http://www.scopus.com/inward/record.url?scp=0029244393&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0029244393&partnerID=8YFLogxK

U2 - 10.1016/0304-8853(94)01440-X

DO - 10.1016/0304-8853(94)01440-X

M3 - Article

AN - SCOPUS:0029244393

SN - 0304-8853

VL - 140-144

SP - 1291

EP - 1292

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - PART 2

ER -

Spin-freezing in the layered perovskites La₂Co_xCu_1-xO_{4 + δ}

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this