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Pressure study of nematicity and quantum criticality in Sr3Ru2O7 for an in-plane field

Sun, D; Wu, W; Grigera, SA; Perry, RS; Mackenzie, AP; Julian, SR; (2013) Pressure study of nematicity and quantum criticality in Sr3Ru2O7 for an in-plane field. Physical Review B , 88 (23) , Article 235129. 10.1103/PhysRevB.88.235129.

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Abstract

We study the relationship between the nematic phases of Sr3Ru2O7 and quantum criticality. At ambient pressure, one nematic phase is associated with a metamagnetic quantum critical end point (QCEP) when the applied magnetic field is near the c axis. We show, however, that this metamagnetic transition does not produce the same nematic signatures when the QCEP is reached by hydrostatic pressure with the field applied in the ab plane. Moreover, a second nematic phase, that is seen for field applied in the ab plane close to, but not right at, a second metamagnetic anomaly, persists with minimal change to the highest applied pressure, 16.55 kbar. Taken together our results suggest that metamagnetic quantum criticality may not be necessary for the formation of a nematic phase in Sr3Ru2O7.

Type: Article
Title: Pressure study of nematicity and quantum criticality in Sr3Ru2O7 for an in-plane field
DOI: 10.1103/PhysRevB.88.235129
Publisher version: http://dx.doi.org/10.1103/PhysRevB.88.235129
Language: English
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/1475013
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