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Non-Fermi-liquid behavior of electron-spin fluctuations in an elemental paramagnet

Non-Fermi-liquid behavior of electron-spin fluctuations in an elemental paramagnet
Non-Fermi-liquid behavior of electron-spin fluctuations in an elemental paramagnet
We report for the first time, the observation of non-Fermi-liquid scaling behavior in an elemental paramagnetic metal. Both the dynamical susceptibility and the resistivity of ?-Mn are shown to display non-Fermi-liquid scaling over a relatively large temperature range at ambient pressure. The temperature dependence of the resistivity in ?-Mn is consistent with the existence of an antiferromagnetic zero-temperature phase transition or “quantum critical point.” Since there is no site disorder in this pure element, we show that non-Fermi-liquid behavior observed in ?-Mn is not a consequence of summing over different local atomic environments, but a much more fundamental phenomenon.
0031-9007
186403-[4pp]
Stewart, J.R.
696842e4-4156-4018-af01-b71320976c13
Rainford, B.D
a57f1153-bbba-49a3-bffc-0d96087156a0
Eccleston, R.S
4e55808b-74c5-41da-8bf0-557e79283941
Cywinski, R.
0881827c-e63d-4500-84ab-82c8ef6a7b82
Stewart, J.R.
696842e4-4156-4018-af01-b71320976c13
Rainford, B.D
a57f1153-bbba-49a3-bffc-0d96087156a0
Eccleston, R.S
4e55808b-74c5-41da-8bf0-557e79283941
Cywinski, R.
0881827c-e63d-4500-84ab-82c8ef6a7b82

Stewart, J.R., Rainford, B.D, Eccleston, R.S and Cywinski, R. (2002) Non-Fermi-liquid behavior of electron-spin fluctuations in an elemental paramagnet. Physical Review Letters, 89 (18), 186403-[4pp]. (doi:10.1103/PhysRevLett.89.186403).

Record type: Article

Abstract

We report for the first time, the observation of non-Fermi-liquid scaling behavior in an elemental paramagnetic metal. Both the dynamical susceptibility and the resistivity of ?-Mn are shown to display non-Fermi-liquid scaling over a relatively large temperature range at ambient pressure. The temperature dependence of the resistivity in ?-Mn is consistent with the existence of an antiferromagnetic zero-temperature phase transition or “quantum critical point.” Since there is no site disorder in this pure element, we show that non-Fermi-liquid behavior observed in ?-Mn is not a consequence of summing over different local atomic environments, but a much more fundamental phenomenon.

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Submitted date: 19 April 2002
Published date: 2002
Organisations: Quantum, Light & Matter Group

Identifiers

Local EPrints ID: 14674
URI: http://eprints.soton.ac.uk/id/eprint/14674
ISSN: 0031-9007
PURE UUID: 36d3936b-b22b-4173-a589-e37459ec8b56

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Date deposited: 17 Feb 2005
Last modified: 25 Nov 2019 19:32

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