Phonons and magnons in stripe-ordered nickelates. A Raman scattering study

Автор(и)

  • V. Gnezdilov B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • V. Kurnosov B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • Yu. Pashkevich A. Galkin Donetsk Physico-Technical Institute of the National Academy of Sciences of Ukraine 72 R. Luxemburg Str., Donetsk 83114 , Ukraine
  • P. Lemmens MPI for Solid State Research, MPI-FKF, Stuttgart D-70569, Germany
  • J. Tranquada Brookhaven National Laboratory, Upton, New York 11973, USA
  • K.-Y. Choi Physikalisches Institut, RWTH Aachen, Aachen 52056, Germany
  • G. Gьntherodt Physikalisches Institut, RWTH Aachen, Aachen 52056, Germany
  • K. Nakajima Neutron Scattering Laboratory ISSP, University of Tokyo, Tokai, Ibaraki, Japan
  • A. Yeremenko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine

DOI:

https://doi.org/10.1063/1.1820563

Ключові слова:

PACS: 72.10.Di, 71.27. a, 78.30.–j

Анотація

Electronic correlation effects in La2–xSrxNiO4 (x = 1/3 and 0.225) lead to spontaneous phase separation into microscopic spin/charge stripes with commensurate and incommensurate order, respectively. Raman scattering experiments on such single crystalline materials show a rich phenomenology of phonon and magnon anomalies due to the new, self-organized periodicities. These effects are observable as function of temperature but can also be induced by cooling in a seemingly small magnetic field leading to a reorganization of stripe structure.

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Опубліковано

2004-12-29

Як цитувати

(1)
Gnezdilov, V.; Kurnosov, V.; Pashkevich, Y.; Lemmens, P.; Tranquada, J.; Choi, K.-Y.; Gьntherodt G.; Nakajima, K.; Yeremenko, A. Phonons and Magnons in Stripe-Ordered Nickelates. A Raman Scattering Study. Fiz. Nizk. Temp. 2004, 31, 205-212.

Номер

Том 31 № 2 (2005)

Розділ

Низькотемпературний магнетизм

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