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Journal Article

Structural and magnetic instabilities of La2-xSrxCaCu2O6

MPS-Authors
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Ulrich,  C.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Thin Film Technology (Gennady Logvenov), Max Planck Institute for Solid State Research, Max Planck Society;

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Reehuis,  M.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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He,  H.
Department Physical Chemistry of Solids (Joachim Maier), Max Planck Institute for Solid State Research, Max Planck Society;
Scientific Facility Crystal Growth (Masahiko Isobe), Max Planck Institute for Solid State Research, Max Planck Society;

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Bernhard,  C.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280354

Ohl,  M.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Takagi,  H.
Department Quantum Materials (Hidenori Takagi), Max Planck Institute for Solid State Research, Max Planck Society;

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Keimer,  B.
Department Solid State Spectroscopy (Bernhard Keimer), Max Planck Institute for Solid State Research, Max Planck Society;

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Citation

Ulrich, C., Kondo, S., Reehuis, M., He, H., Bernhard, C., Niedermayer, C., et al. (2002). Structural and magnetic instabilities of La2-xSrxCaCu2O6. Physical Review B, 65(22): 220507(R).


Cite as: https://hdl.handle.net/21.11116/0000-000E-EF03-2
Abstract
A neutron-scattering study of nonsuperconducting La2-
xSrxCaCu2O6 (x=0 and 0.2), a bilayer copper oxide without CuO
chains, has revealed an unexpected tetragonal-to-orthorhombic
transition with a doping dependent transition temperature. The
predominant structural modification below the transition is an
in-plane shift of the apical oxygen. In the doped sample, the
orthorhombic superstructure is strongly disordered, and a
glassy state involving both magnetic and structural degrees of
freedom develops at low temperature. The spin correlations are
commensurate.