Spin dynamics of the charge-transfer phase transition of an iron mixed-valence complex observed using muon spin relaxation spectroscopy

N. Kida, M. Enomoto, I. Watanabe, Takao Suzuki, N. Kojima

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Muon spin relaxation was performed to investigate the dynamic properties of electrons in the iron mixed-valence complex (n -C3 H7) 4 N [FeII FeIII (dto) 3] (dto= C2 O2 S2), which shows a charge-transfer phase transition around 120 K and a ferromagnetic transition at 7 K. The dynamic muon spin depolarization rate for (n -C3 H7) 4 N [FeII FeIII (dto) 3] in zero field exhibits an anomalous enhancement with thermal hysteresis between 60 and 140 K, which is due to the charge-transfer phase transition. The nature of the charge transfer is the oscillation of electrons between FeII and FeIII sites, producing a dynamically fluctuating internal field at the muon site with a frequency of about 0.1 MHz.

Original languageEnglish
Article number144427
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume77
Issue number14
DOIs
Publication statusPublished - 2008 Apr 25
Externally publishedYes

Fingerprint

Spin dynamics
spin dynamics
Charge transfer
muons
Iron
Phase transitions
charge transfer
Spectroscopy
valence
iron
spectroscopy
Electrons
Depolarization
depolarization
dynamic characteristics
Hysteresis
electrons
hysteresis
oscillations
augmentation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Spin dynamics of the charge-transfer phase transition of an iron mixed-valence complex observed using muon spin relaxation spectroscopy. / Kida, N.; Enomoto, M.; Watanabe, I.; Suzuki, Takao; Kojima, N.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 77, No. 14, 144427, 25.04.2008.

Research output: Contribution to journalArticle

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