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X-ray scattering study of the incommensurate phase in Mg-doped CuGeO3

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Title

X-ray scattering study of the incommensurate phase in Mg-doped CuGeO3

Author(s)

Christianson, Rebecca J
Wang, Y. J.
LaMarra, S.C.
Birgeneau, R. J.
Kiryukhin, V.
Masuda, T.
Tsukada, I.
Uchinokura, K.
Keimer, B.

Description

We present results of a systematic x-ray scattering study of the effects of Mg doping on the high-fieldincommensurate phase of CuGeO3. Lorentzian-squared line shapes, the changing of the first-order transition tosecond order, and the destruction of long-range order with infinitesimal doping are observed, consistent withrandom-field effects in a three-dimensional XY system. Values for the soliton width in pure and lightly dopedCuGeO3 are deduced. We find that even a very small doping has a drastic effect on the shape of the latticemodulation.

Date Published

2018-03-26

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  • Download Christianson_XRayMgDoped.pdf

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Olin College of Engineering

An undergraduate engineering institution exploring innovative approaches to engineering education since its founding in 1997.

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Needham, MA 02492
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