Tokiwa, Y;
Mchalwat, M;
Perry, RS;
Gegenwart, P;
(2016)
Multiple Metamagnetic Quantum Criticality in Sr3Ru2O7.
Physical Review Letters
, 116
(22)
, Article 226402. 10.1103/PhysRevLett.116.226402.
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Abstract
Bilayer strontium ruthenate Sr 3 Ru 2 O 7 displays pronounced non-Fermi liquid behavior at magnetic fields around 8 T, applied perpendicular to the ruthenate planes, which previously has been associated with an itinerant metamagnetic quantum critical end point (QCEP). We focus on the magnetic Grüneisen parameter Γ H , which is the most direct probe to characterize field-induced quantum criticality. We confirm quantum critical scaling due to a putative two-dimensional QCEP near 7.845(5) T, which is masked by two ordered phases A and B , identified previously by neutron scattering. In addition, we find evidence for a QCEP at 7.53(2) T and determine the quantum critical regimes of both instabilities and the effect of their superposition.
| Type: | Article |
|---|---|
| Title: | Multiple Metamagnetic Quantum Criticality in Sr3Ru2O7 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.116.226402 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.116.226402 |
| Language: | English |
| Additional information: | © 2016 American Physical Society. |
| Keywords: | Science & Technology, Physical Sciences, Physics, Multidisciplinary, Physics |
| 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/1503142 |
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