Electron-phonon and spin-phonon coupling in NaV2O5: Charge fluctuations effects

E.Ya. Sherman; M. Fischer; P Lemmens; P.H.M. van Loosdrecht; G. Güntherodt

doi:10.1209/epl/i1999-00533-6

Electron-phonon and spin-phonon coupling in NaV2O5: Charge fluctuations effects

E.Ya. Sherman, M. Fischer, P Lemmens, P.H.M. van Loosdrecht, G. Güntherodt

Zernike Institute for Advanced Materials

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Abstract

We show that the asymmetric crystal environment of the V site in the ladder compound NaV2O5 leads to a strong coupling of vanadium 3d electrons to phonons. This coupling causes fluctuations of the charge on the V ions, and favors a transition to a charge-ordered state at low temperatures. In the low temperature phase the charge fluctuations modulate the spin-spin superexchange interaction, resulting in a strong spin-phonon coupling.

Original language	English
Pages (from-to)	648 - 654
Number of pages	7
Journal	Europhysics Letters
Volume	48
Issue number	6
DOIs	https://doi.org/10.1209/epl/i1999-00533-6
Publication status	Published - 1999

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title = "Electron-phonon and spin-phonon coupling in NaV2O5: Charge fluctuations effects",

abstract = "We show that the asymmetric crystal environment of the V site in the ladder compound NaV2O5 leads to a strong coupling of vanadium 3d electrons to phonons. This coupling causes fluctuations of the charge on the V ions, and favors a transition to a charge-ordered state at low temperatures. In the low temperature phase the charge fluctuations modulate the spin-spin superexchange interaction, resulting in a strong spin-phonon coupling.",

author = "E.Ya. Sherman and M. Fischer and P Lemmens and Loosdrecht, {P.H.M. van} and G. G{\"u}ntherodt",

note = "Relation: http://www.rug.nl/natuurkunde/ date_submitted:2006 Rights: University of Groningen. Materials Science Centre",

year = "1999",

doi = "10.1209/epl/i1999-00533-6",

language = "English",

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journal = "Europhysics Letters",

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TY - JOUR

T1 - Electron-phonon and spin-phonon coupling in NaV2O5

T2 - Charge fluctuations effects

AU - Sherman, E.Ya.

AU - Fischer, M.

AU - Lemmens, P

AU - Loosdrecht, P.H.M. van

AU - Güntherodt, G.

N1 - Relation: http://www.rug.nl/natuurkunde/ date_submitted:2006 Rights: University of Groningen. Materials Science Centre

PY - 1999

Y1 - 1999

N2 - We show that the asymmetric crystal environment of the V site in the ladder compound NaV2O5 leads to a strong coupling of vanadium 3d electrons to phonons. This coupling causes fluctuations of the charge on the V ions, and favors a transition to a charge-ordered state at low temperatures. In the low temperature phase the charge fluctuations modulate the spin-spin superexchange interaction, resulting in a strong spin-phonon coupling.

AB - We show that the asymmetric crystal environment of the V site in the ladder compound NaV2O5 leads to a strong coupling of vanadium 3d electrons to phonons. This coupling causes fluctuations of the charge on the V ions, and favors a transition to a charge-ordered state at low temperatures. In the low temperature phase the charge fluctuations modulate the spin-spin superexchange interaction, resulting in a strong spin-phonon coupling.

U2 - 10.1209/epl/i1999-00533-6

DO - 10.1209/epl/i1999-00533-6

M3 - Article

SN - 0295-5075

VL - 48

SP - 648

EP - 654

JO - Europhysics Letters

JF - Europhysics Letters

IS - 6

ER -

Electron-phonon and spin-phonon coupling in NaV2O5: Charge fluctuations effects

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