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

doi:10.1016/j.physleta.2014.12.028

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

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6 引文斯高帕斯（Scopus）

摘要

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.

原文	English
頁（從 - 到）	705-709
頁數	5
期刊	Physics Letters, Section A: General, Atomic and Solid State Physics
卷	379
發行號	7
DOIs	https://doi.org/10.1016/j.physleta.2014.12.028
出版狀態	Published - 2015 3月 20

All Science Journal Classification (ASJC) codes

一般物理與天文學

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10.1016/j.physleta.2014.12.028

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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.",

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AU - Charnaya, E. V.

AU - Lee, M. K.

AU - Chang, L. J.

AU - Kumzerov, Yu A.

AU - Fokin, A. V.

AU - Samoylovich, M. I.

AU - Bugaev, A. S.

PY - 2015/3/20

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N2 - 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.

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

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