Low spin to high spin transition at the onset of superconductivity in LaSrCuO and high spin state in NdCeCuO compound

Mikio Eto, Hiroshi Kamimura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Electronic structures of LaSrCuO and NdCeCuO compounds are investigated by first principles cluster calculations. In the hole-doped CuO6 cluster embedded in LaSrCuO, the ground state changes from low spin to high spin state near the doping concentration of the onset of superconductivity, owing to the effect of the apical oxygens. If we take account of the effect of the dopant divalent ions by virtual crystal approximation, the high spin state becomes more stable. While in the electron-doped CuO4 cluster in NdCeCuO, the high spin ground state always appears. Using these results, the observed phase diagrams for hole and electron-doped superconductors are explained.

Original languageEnglish
Pages (from-to)1599-1600
Number of pages2
JournalPhysica C: Superconductivity and its Applications
Volume185-189
Issue numberPART 3
DOIs
Publication statusPublished - 1991 Dec 1
Externally publishedYes

Fingerprint

Superconductivity
Ground state
superconductivity
Doping (additives)
Electrons
Superconducting materials
Phase diagrams
Electronic structure
Ions
Oxygen
Crystals
ground state
electrons
phase diagrams
electronic structure
oxygen
approximation
crystals
ions

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Low spin to high spin transition at the onset of superconductivity in LaSrCuO and high spin state in NdCeCuO compound. / Eto, Mikio; Kamimura, Hiroshi.

In: Physica C: Superconductivity and its Applications, Vol. 185-189, No. PART 3, 01.12.1991, p. 1599-1600.

Research output: Contribution to journalArticle

@article{c9d2f9abfca54b1c8cee24af9a4abb92,
title = "Low spin to high spin transition at the onset of superconductivity in LaSrCuO and high spin state in NdCeCuO compound",
abstract = "Electronic structures of LaSrCuO and NdCeCuO compounds are investigated by first principles cluster calculations. In the hole-doped CuO6 cluster embedded in LaSrCuO, the ground state changes from low spin to high spin state near the doping concentration of the onset of superconductivity, owing to the effect of the apical oxygens. If we take account of the effect of the dopant divalent ions by virtual crystal approximation, the high spin state becomes more stable. While in the electron-doped CuO4 cluster in NdCeCuO, the high spin ground state always appears. Using these results, the observed phase diagrams for hole and electron-doped superconductors are explained.",
author = "Mikio Eto and Hiroshi Kamimura",
year = "1991",
month = "12",
day = "1",
doi = "10.1016/0921-4534(91)90926-P",
language = "English",
volume = "185-189",
pages = "1599--1600",
journal = "Physica C: Superconductivity and its Applications",
issn = "0921-4534",
publisher = "Elsevier",
number = "PART 3",

}

TY - JOUR

T1 - Low spin to high spin transition at the onset of superconductivity in LaSrCuO and high spin state in NdCeCuO compound

AU - Eto, Mikio

AU - Kamimura, Hiroshi

PY - 1991/12/1

Y1 - 1991/12/1

N2 - Electronic structures of LaSrCuO and NdCeCuO compounds are investigated by first principles cluster calculations. In the hole-doped CuO6 cluster embedded in LaSrCuO, the ground state changes from low spin to high spin state near the doping concentration of the onset of superconductivity, owing to the effect of the apical oxygens. If we take account of the effect of the dopant divalent ions by virtual crystal approximation, the high spin state becomes more stable. While in the electron-doped CuO4 cluster in NdCeCuO, the high spin ground state always appears. Using these results, the observed phase diagrams for hole and electron-doped superconductors are explained.

AB - Electronic structures of LaSrCuO and NdCeCuO compounds are investigated by first principles cluster calculations. In the hole-doped CuO6 cluster embedded in LaSrCuO, the ground state changes from low spin to high spin state near the doping concentration of the onset of superconductivity, owing to the effect of the apical oxygens. If we take account of the effect of the dopant divalent ions by virtual crystal approximation, the high spin state becomes more stable. While in the electron-doped CuO4 cluster in NdCeCuO, the high spin ground state always appears. Using these results, the observed phase diagrams for hole and electron-doped superconductors are explained.

UR - http://www.scopus.com/inward/record.url?scp=0026387131&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026387131&partnerID=8YFLogxK

U2 - 10.1016/0921-4534(91)90926-P

DO - 10.1016/0921-4534(91)90926-P

M3 - Article

AN - SCOPUS:0026387131

VL - 185-189

SP - 1599

EP - 1600

JO - Physica C: Superconductivity and its Applications

JF - Physica C: Superconductivity and its Applications

SN - 0921-4534

IS - PART 3

ER -