Spin dynamics in Sr3Ru2O7 near the metamagnetic transition by inelastic neutron scattering

DOI: 10.1016/j.physb.2007.10.123

Authors: S. Ramos (University of Birmingham; Diamond Light Source) , E. M. Forgan (University of Birmingham) , C. Bowell (University of Birmingham) , S. M. Hayden (University of Bristol) , A. J. Schofield (University of Bristol) , A. Wildes (Institut Laue-Langevin) , E. A. Yelland (Unversity of Bristol) , S. P. Brown (University of Birmingham) , M. Laver (University of Birmingham) , R. S. Perry (Universityof St. Andrews) , Y. Maeno (Kyoto University)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Physica B: Condensed Matter , VOL 403 , PAGES 1270-1272

State: Published (Approved)
Published: April 2008

Abstract: The bilayered ruthenate Sr3Ru2O7Sr3Ru2O7 has a metamagnetic quantum critical point. This is the first example of a material with a quantum-critical end-point. This work addresses the problem of the metamagnetic criticality in this system through the measurement of spin fluctuations by inelastic neutron scattering. Our results show that incommensurate antiferromagnetic fluctuations are present in a wide range of applied fields. We have also observed how ferromagnetic fluctuations develop at the metamagnetic field. Finally, the intensity of the two types of fluctuations is followed as a function of the energy transfer between the neutron and the spins.

Journal Keywords: Metamagnetism; Ruthenate; Quantum Criticality; Inelastic Neutron Scattering

Subject Areas: Physics, Materials


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Added On: 28/08/2010 09:24

Discipline Tags:

Physics Magnetism Materials Science

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