Effect of pressure on magnetic structure in heavy fermion CeRhIn5
نویسنده
چکیده
The effect of hydrostatic pressure on the incommensurate antiferromagnetic structure of CeRhIn5 is investigated with neutron diffraction using a He pressure cell. At 3.8 kbar, the staggered magnetic moment is 0.37(4) μB per Ce at 1.6 K, which is the same as the ambient-pressure value. The Néel temperature TN = 3.8(1) K is also the same as the ambient-pressure one, although the curve of order parameter has changed by pressure. The incommensurability δ of the magnetic wave vector qM = (1/2,1/2,δ) has reduced from δ = 0.297 at ambient pressure to δ = 0.294(1) at 3.8 kbar.
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