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Field-tunable spin-density-wave phases in Sr3Ru2O7

Lester, C., Ramos, Silvia, Perry, R. S., Croft, T. P., Bewley, R. I., Guidi, T., Manuel, P., Khalyavin, D. D., Forgan, E. M., Hayden, S. M. and others. (2015) Field-tunable spin-density-wave phases in Sr3Ru2O7. Nature Materials, 14 (4). pp. 373-378. ISSN 1476-1122. (doi:10.1038/nmat4181) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Official URL
http://doi.org/10.1038/nmat4181

Abstract

The conduction electrons in a metal experience competing interactions with each other and the atomic nuclei. This competition can lead to many types of magnetic order in metals1. For example, in ?chromium2 the electrons order to form a spin-density-wave (SDW) antiferromagnetic state. A magnetic field may be used to perturb or tune materials with delicately balanced electronic interactions. Here, we show that the application of a magnetic field can induce SDW magnetic order in a quasi-2D metamagnetic metal, where none exists in the absence of the field. We use magnetic neutron scattering to show that the application of a large (B ? 8 T) magnetic field to the perovskite metal Sr3Ru2O7 (refs 3, 4, 5, 6, 7) can be used to tune the material through two magnetically ordered SDW states. The ordered states exist over relatively small ranges in field (?0.4 T), suggesting that their origin is due to a new mechanism related to the electronic fine structure near the Fermi energy, possibly combined with the stabilizing effect of magnetic fluctuations8, 9. The magnetic field direction is shown to control the SDW domain populations, which naturally explains the strong resistivity anisotropy or ‘electronic nematic’ behaviour observed5, 6 in this material.

Item Type: Article
DOI/Identification number: 10.1038/nmat4181
Uncontrolled keywords: Physics of Quantum Materials
Subjects: Q Science > QC Physics > QC176 Solid state physics
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Silvia Ramos
Date Deposited: 28 Apr 2015 10:03 UTC
Last Modified: 17 Jul 2019 09:58 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/48077 (The current URI for this page, for reference purposes)
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