Magnetic-field-induced slowing-down of molecular rotation in C60 crystals

V. T. Lebedev, G. Török, L. Cser, V. P. Budtov, A. I. Sibilev

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The molecular dynamics of C60 crystals was studied by inelastic neutron scattering at T = 290 K, i.e., above the first-order phase transition temperature (TC ≈ 260 K), in the region of free C60-spheroid rotation in the lattice. The energy broadening of the original neutron spectrum 2Γ0 ≈ 0.1 meV for a momentum transfer q = 2 Å-1 is in agreement with NMR data on the rotational relaxation time of the molecule τ ∼ 10-11 s ∼ ℏ/Γ0. This effect was observed to decrease in magnetic fields H = 2.5-4.5 kOe applied along the scattering vector: ΓH = 0.7Γ0. The slowing-down of the molecular rotation is discussed in connection with the interaction of a magnetic field with the molecular currents, which fluctuate when the C60 cage rotates.

Original languageEnglish
Pages (from-to)641-643
Number of pages3
JournalPhysics of the Solid State
Volume44
Issue number4
DOIs
Publication statusPublished - Apr 1 2002

Fingerprint

molecular rotation
Magnetic fields
Crystals
Inelastic neutron scattering
Momentum transfer
neutron spectra
spheroids
magnetic fields
Relaxation time
Superconducting transition temperature
crystals
momentum transfer
Molecular dynamics
Neutrons
inelastic scattering
neutron scattering
relaxation time
Phase transitions
transition temperature
Nuclear magnetic resonance

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Magnetic-field-induced slowing-down of molecular rotation in C60 crystals. / Lebedev, V. T.; Török, G.; Cser, L.; Budtov, V. P.; Sibilev, A. I.

In: Physics of the Solid State, Vol. 44, No. 4, 01.04.2002, p. 641-643.

Research output: Contribution to journalArticle

Lebedev, V. T. ; Török, G. ; Cser, L. ; Budtov, V. P. ; Sibilev, A. I. / Magnetic-field-induced slowing-down of molecular rotation in C60 crystals. In: Physics of the Solid State. 2002 ; Vol. 44, No. 4. pp. 641-643.
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