Superconductivity under a ferromagnetic molecular field

Kazushige MacHida, Hiizu Nakanishi

Research output: Contribution to journalArticle

165 Citations (Scopus)

Abstract

Superconductivity under a ferromagnetic molecular field is investigated theoretically based on a one-dimensional electron-band model. By using an exact solution which takes into account infinite numbers of higher harmonics for the Bogoliubovde Gennes equation, it is demonstrated that the spatially modulated superconducting state with a distorted sinusoidal wave is stabilized in the highfield region. A key feature of the solution is a soliton lattice structure which has a two-energy-gap structure and is accompanied by a spin-density polarization of the conduction electrons. The coexistence phase observed in ErRh4B4 which consists of ferromagnetism, superconductivity, and a sinusoidally modulated magnetic state, is successfully interpreted in terms of this modulated superconducting state.

Original languageEnglish
Pages (from-to)122-133
Number of pages12
JournalPhysical Review B
Volume30
Issue number1
DOIs
Publication statusPublished - Jan 1 1984
Externally publishedYes

Fingerprint

Superconductivity
superconductivity
Electrons
Ferromagnetism
Solitons
conduction electrons
ferromagnetism
Energy gap
solitary waves
Polarization
harmonics
polarization
electrons

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

Superconductivity under a ferromagnetic molecular field. / MacHida, Kazushige; Nakanishi, Hiizu.

In: Physical Review B, Vol. 30, No. 1, 01.01.1984, p. 122-133.

Research output: Contribution to journalArticle

MacHida, Kazushige ; Nakanishi, Hiizu. / Superconductivity under a ferromagnetic molecular field. In: Physical Review B. 1984 ; Vol. 30, No. 1. pp. 122-133.
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