Magnetic properties of Langmuir-Blodgett films: A theoretical study. 1. Photoswitching of the magnetic properties of Langmuir films

Nikolai Tyutyulkov, Aleksandar Tsekov Staykov, Klaus Müllen, Fritz Dietz

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

The change of intermolecular spin exchange interaction within a half-filled band of two-dimensional Langmuir films formed by photoresponsive radicals has been investigated theoretically. The photoswitching of magnetic properties arises as a result of a reversible photochemical reaction within the building units of the Langmuir films. These units consist of a photochromic moiety connected with a polymethine radical. The various contributions to the Heisenberg effective exchange integral, the direct (Coulomb), kinetic, and indirect spin exchange, have been calculated using the band theory of organic open-shell π-electron systems.

Original languageEnglish
Pages (from-to)10030-10034
Number of pages5
JournalLangmuir
Volume18
Issue number25
DOIs
Publication statusPublished - Dec 10 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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