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Revival of the spin-Peierls transition in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Zn</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">GeO</…
Pressure- and temperature-dependent susceptibility and Raman scattering experiments on single-crystalline ${\mathrm{Cu}}_{0.986}{\mathrm{Zn}}_{0.014}{\mathrm{GeO}}_{3}$ have shown an unusually strong increase of the spin-Peierls phase transition temperature upon applying hydrostatic pressure. The large positive pressure coefficient (7.5 K/GPa)---almost twice as large as for the pure compound (4.5 K/GPa)---is interpreted as arising due to an …