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Phase bifurcation and quantum fluctuations in Sr3Ru2O7

Green, AG; Grigera, SA; Borzi, RA; Mackenzie, AP; Perry, RS; Simons, BD; (2005) Phase bifurcation and quantum fluctuations in Sr3Ru2O7. PHYS REV LETT , 95 (8) , Article 086402. 10.1103/PhysRevLett.95.086402. Green open access

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Abstract

The bilayer ruthenate Sr3Ru2O7 has been cited as a textbook example of itinerant metamagnetic quantum criticality. However, recent studies of the ultrapure system have revealed striking anomalies in magnetism and transport in the vicinity of the quantum critical point. Drawing on fresh experimental data, we show that the complex phase behavior reported here can be fully accommodated within the framework of a simple Landau theory. We discuss the potential physical mechanisms that underpin the phenomenology, and assess the capacity of the ruthenate system to realize quantum tricritial behavior.

Type: Article
Title: Phase bifurcation and quantum fluctuations in Sr3Ru2O7
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.95.086402
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.95.086402
Language: English
Additional information: © 2005 The American Physical Society
Keywords: RUTHENATE SR3RU2O7, METAMAGNETISM, CRITICALITY
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: https://discovery.ucl.ac.uk/id/eprint/1333497
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