The lineshape of the nuclear induction signal in disordered conductors

The lineshape of the NMR signal in disordered conductors is calculated. It is shown that the long-range fluctuations of the Knight shift, due to the phase coherence of conduction electrons on the scale v Fτ φ ( v F is the velocity of electrons at the Fermi surface, τ φ is the phase relaxation time o...

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Bibliographic Details
Published inSolid state communications Vol. 83; no. 4; pp. 307 - 309
Main Authors Azarov, I.A., Vodop'yanov, B.P.
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 01.07.1992
Elsevier
Subjects
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Conduction electrons
Electron paramagnetic resonance and relaxation
Exact sciences and technology
Magnetic resonances and relaxations in condensed matter, mössbauer effect
Metals. Metallurgy
Physics
Fluctuations
Disordered system
Spectral line profile
Conduction electron
Theoretical study
Knight shift
Electrical conductor
Nuclear magnetic resonance
Relaxation time
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Summary:The lineshape of the NMR signal in disordered conductors is calculated. It is shown that the long-range fluctuations of the Knight shift, due to the phase coherence of conduction electrons on the scale v Fτ φ ( v F is the velocity of electrons at the Fermi surface, τ φ is the phase relaxation time of conduction electrons), are not smoothed out by the nuclear spin diffusion on the NMR time scale. This leads to the free decay of the nuclear spin induction differing from the exponential form.
ISSN:0038-1098
1879-2766
DOI:10.1016/0038-1098(92)90277-G