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Effect of pressure on magnetic structure in heavy fermion CeRhIn5

Wei Bao·S. F. Trevino·J. W. Lynn·P. G. Pagliuso·J. L. Sarrao·J. D. Thompson·Z. Fisk
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Abstract

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) Bohr magneton per Ce at 1.6 K, which is the same as the ambient-pressure value. The Neel temperature T_N=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 "delta" of the magnetic wave vector q_M=(1/2,1/2,"delta") has reduced from "delta"=0.297 at ambient pressure to "delta"=0.294(1) at 3.8 kbar.

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Wei Bao, S. F. Trevino, J. W. Lynn, P. G. Pagliuso, J. L. Sarrao, J. D. Thompson, Z. Fisk. 2002-01-30. Effect of pressure on magnetic structure in heavy fermion CeRhIn5. https://doi.org/10.1007/s003390101121

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