UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Strain and vector magnetic field tuning of the anomalous phase in Sr3Ru2O7

Brodsky, DO; Barber, ME; Bruin, JAN; Borzi, RA; Grigera, SA; Perry, RS; Mackenzie, AP; (2017) Strain and vector magnetic field tuning of the anomalous phase in Sr3Ru2O7. Science Advances , 3 (2) , Article e1501804. 10.1126/sciadv.1501804. Green open access

[img]
Preview
Text
e1501804.full.pdf - ["content_typename_Published version" not defined]

Download (2MB) | Preview

Abstract

A major area of interest in condensed matter physics is the way electrons in correlated electron materials can self-organize into ordered states, and a particularly intriguing possibility is that they spontaneously choose a preferred direction of conduction. The correlated electron metal Sr3Ru2O7 has an anomalous phase at low temperatures that features strong susceptibility toward anisotropic transport. This susceptibility has been thought to indicate a spontaneous anisotropy, that is, electronic order that spontaneously breaks the point-group symmetry of the lattice, allowing weak external stimuli to select the orientation of the anisotropy. We investigate further by studying the response of Sr3Ru2O7 in the region of phase formation to two fields that lift the native tetragonal symmetry of the lattice: in-plane magnetic field and orthorhombic lattice distortion through uniaxial pressure. The response to uniaxial pressure is surprisingly strong: Compressing the lattice by ~0.1% induces an approximately 100% transport anisotropy. However, neither the in-plane field nor the pressure phase diagrams are qualitatively consistent with spontaneous symmetry reduction. Instead, both are consistent with a multicomponent order parameter that is likely to preserve the point-group symmetry of the lattice, but is highly susceptible to perturbation.

Type: Article
Title: Strain and vector magnetic field tuning of the anomalous phase in Sr3Ru2O7
Open access status: An open access version is available from UCL Discovery
DOI: 10.1126/sciadv.1501804
Publisher version: https://doi.org/10.1126/sciadv.1501804
Language: English
Additional information: Copyright © 2017 The Authors. This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial license (http://creativecommons.org/licenses/by-nc/4.0/), which permits use, distribution, and reproduction in any medium, so long as the resultant use is not for commercial advantage and provided the original work is properly cited.
Keywords: Sr3Ru2O7, ruthenates, uniaxial pressure, vector magnetic field, quantum criticality, density wave, two-component order parameter, strain tuning
UCL classification: UCL > Provost and Vice Provost Offices
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: http://discovery.ucl.ac.uk/id/eprint/1571757
Downloads since deposit
42Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item