Spin dynamics of 3d heavy fermion compound LaMn4Al8
Spin dynamics of 3d heavy fermion compound LaMn4Al8
Yamasaki et al. have suggested that LaMn4Al8 is a nearly antiferromagnetic metal with linear chains of Mn atoms. The Sommerfeld constant for LaMn4Al8 ?=265 mJ/mol K2 is comparable to values found in other 3d heavy fermions such as (YSc)Mn2 and ?-Mn. We have shown that LaMn4Al8 displays antiferromagnetic order below 15 K. Here we present inelastic neutron scattering data on LaMn4Al8. The magnetic scattering in LaMn4Al8 has two components: a broad inelastic response centred near 30 meV and a narrower quasielastic response whose width and weight change with temperature. We attribute the latter to near-critical spin fluctuations.
spin dynamics, 3d heavy fermion, inelastic neutron scattering
675-676
Leavey, C.J.
036b92b8-f811-4ae2-b541-8f1e2cf20d99
Rainford, B.D.
a57f1153-bbba-49a3-bffc-0d96087156a0
Stewart, J.R.
696842e4-4156-4018-af01-b71320976c13
Adroja, D.T.
8eaa8fab-9acb-420b-af27-918d6fd01a70
2006
Leavey, C.J.
036b92b8-f811-4ae2-b541-8f1e2cf20d99
Rainford, B.D.
a57f1153-bbba-49a3-bffc-0d96087156a0
Stewart, J.R.
696842e4-4156-4018-af01-b71320976c13
Adroja, D.T.
8eaa8fab-9acb-420b-af27-918d6fd01a70
Leavey, C.J., Rainford, B.D., Stewart, J.R. and Adroja, D.T.
(2006)
Spin dynamics of 3d heavy fermion compound LaMn4Al8.
Physica B: Condensed Matter, 378-380, .
(doi:10.1016/j.physb.2006.01.189).
Abstract
Yamasaki et al. have suggested that LaMn4Al8 is a nearly antiferromagnetic metal with linear chains of Mn atoms. The Sommerfeld constant for LaMn4Al8 ?=265 mJ/mol K2 is comparable to values found in other 3d heavy fermions such as (YSc)Mn2 and ?-Mn. We have shown that LaMn4Al8 displays antiferromagnetic order below 15 K. Here we present inelastic neutron scattering data on LaMn4Al8. The magnetic scattering in LaMn4Al8 has two components: a broad inelastic response centred near 30 meV and a narrower quasielastic response whose width and weight change with temperature. We attribute the latter to near-critical spin fluctuations.
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Published date: 2006
Keywords:
spin dynamics, 3d heavy fermion, inelastic neutron scattering
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Local EPrints ID: 57419
URI: http://eprints.soton.ac.uk/id/eprint/57419
ISSN: 0921-4526
PURE UUID: 408bf9af-d5ce-4dfb-b6d6-20aa00a506c6
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Date deposited: 13 Aug 2008
Last modified: 15 Mar 2024 11:06
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Contributors
Author:
C.J. Leavey
Author:
B.D. Rainford
Author:
J.R. Stewart
Author:
D.T. Adroja
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