Effect of pressure on magnetic structure in heavy fermion CeRhIn5

Details Effect of pressure on magnetic structure in heavy fermion CeRhIn5 Effect of pressure on magnetic structure in heavy fermion CeRhIn5

2001-09-21

arxiv.org/abs/cond-mat/0109383v2

Applied Physics A, vol. 74, S557 (2002)

Physics

Condensed Matter

Strongly Correlated Electrons

3 pages, 2 figures. ICNS'2001

Scientific paper

10.1007/s003390101121

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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