Grigera, SA and Gegenwart, P and Borzi, RA and Weickert, F and Schofield, AJ and Perry, RS and Tayama, T and Sakakibara, T and Maeno, Y and Green, AG and Mackenzie, AP (2004) Disorder-sensitive phase formation linked to metamagnetic quantum criticality. SCIENCE , 306 (5699) 1154 - 1157.
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Condensed systems of strongly interacting electrons are idea[ for the study of quantum complexity. It has become possible to promote the formation of new quantum phases by explicitly tuning systems toward special low-temperature quantum critical points. So far, the clearest examples have been appearances of superconductivity near pressure-tuned antiferromagnetic quantum critical points. We present experimental evidence for the formation of a non-superconducting phase in the vicinity of a magnetic field-tuned quantum critical point in ultrapure crystals of the ruthenate metal Sr3Ru2O7,and we discuss the possibility that the observed phase is due to a spin-dependent symmetry-breaking Fermi surface distortion.
|Title:||Disorder-sensitive phase formation linked to metamagnetic quantum criticality|
|Keywords:||FERMI-LIQUID, RUTHENATE SR3RU2O7, SUPERCONDUCTIVITY, INSTABILITY, TRANSITIONS, ELECTRON, ORDER|
|UCL classification:||UCL > School of BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology|
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