Impact of opal nanoconfinement on electronic properties of sodium particles: NMR studies

E. V. Charnaya, M. K. Lee, L. J. Chang, Yu A. Kumzerov, A. V. Fokin, M. I. Samoylovich, A. S. Bugaev

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The 23Na Knight shift of NMR line which is highly correlated with the electron spin susceptibility and density of states at the Fermi level was studied for the sodium loaded opal. The measurements were carried out within a temperature range from 100 to 400 K for solid and melted confined sodium nanoparticles. The NMR line below 305 K was a singlet with the Knight shift reduced compared to that in bulk. Above this temperature the NMR line split reproducibly into two components with opposite trends in the Knight shift temperature dependences which evidenced a nanoconfinement-induced transformation and heterogeneity in the electron system. The findings were suggested to be related to changes in the topology of the Fermi surface.

Original languageEnglish
Pages (from-to)705-709
Number of pages5
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume379
Issue number7
DOIs
Publication statusPublished - 2015 Mar 20

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sodium
nuclear magnetic resonance
electronics
electron spin
Fermi surfaces
topology
magnetic permeability
trends
nanoparticles
temperature dependence
temperature
electrons

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Charnaya, E. V. ; Lee, M. K. ; Chang, L. J. ; Kumzerov, Yu A. ; Fokin, A. V. ; Samoylovich, M. I. ; Bugaev, A. S. / Impact of opal nanoconfinement on electronic properties of sodium particles : NMR studies. In: Physics Letters, Section A: General, Atomic and Solid State Physics. 2015 ; Vol. 379, No. 7. pp. 705-709.
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Impact of opal nanoconfinement on electronic properties of sodium particles : NMR studies. / Charnaya, E. V.; Lee, M. K.; Chang, L. J.; Kumzerov, Yu A.; Fokin, A. V.; Samoylovich, M. I.; Bugaev, A. S.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 379, No. 7, 20.03.2015, p. 705-709.

Research output: Contribution to journalArticle

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AU - Charnaya, E. V.

AU - Lee, M. K.

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AB - The 23Na Knight shift of NMR line which is highly correlated with the electron spin susceptibility and density of states at the Fermi level was studied for the sodium loaded opal. The measurements were carried out within a temperature range from 100 to 400 K for solid and melted confined sodium nanoparticles. The NMR line below 305 K was a singlet with the Knight shift reduced compared to that in bulk. Above this temperature the NMR line split reproducibly into two components with opposite trends in the Knight shift temperature dependences which evidenced a nanoconfinement-induced transformation and heterogeneity in the electron system. The findings were suggested to be related to changes in the topology of the Fermi surface.

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