Gegenwart, P;
Weickert, F;
Garst, M;
Perry, RS;
Maeno, Y;
(2006)
Metamagnetic quantum criticality in Sr3Ru2O7 studied by thermal expansion.
Physical Review Letters
, 96
(13)
, Article 136402. 10.1103/PhysRevLett.96.136402.
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Abstract
We report low-temperature thermal expansion measurements on the bilayer ruthenate Sr 3 Ru 2 O 7 as a function of magnetic field applied perpendicular to the ruthenium-oxide planes. The field dependence of the c -axis expansion coefficient indicates the accumulation of entropy close to 8 T, related to an underlying quantum critical point. The latter is masked by two first-order metamagnetic transitions which bound a regime of enhanced entropy. Outside this region the singular thermal expansion behavior is compatible with the predictions of the itinerant theory for a two-dimensional metamagnetic quantum critical end point.
| Type: | Article |
|---|---|
| Title: | Metamagnetic quantum criticality in Sr3Ru2O7 studied by thermal expansion |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevLett.96.136402 |
| Publisher version: | https://doi.org/10.1103/PhysRevLett.96.136402 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| 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-pp.ucl.ac.uk/id/eprint/10134082 |
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