Competing magnetic fluctuations in Sr3Ru2O7 probed by Ti doping

Abstract

We report the effect of nonmagnetic Ti4+ impurities on the electronic and magnetic properties of Sr3Ru2O7. Small amounts of Ti suppress the characteristic peak in magnetic susceptibility near 16 K and result in a sharp upturn in specific heat. The metamagnetic quantum phase transition and related anomalous features are quickly smeared out by small amounts of Ti. These results provide strong evidence for the existence of competing magnetic fluctuations in the ground state of Sr3Ru2O7. Ti doping suppresses the low temperature antiferromagnetic interactions that arise from Fermi surface nesting, leaving the system in a state dominated by ferromagnetic fluctuations.

5 pages, 4 figures, 1 table

References in corpus (8)

• Metamagnetic Quantum Criticality
• Incommensurate magnetic ordering in Sr_2Ru_(1-x)Ti_xO_4
• Magnetic ordering in Sr2RuO4 induced by nonmagnetic impurities
• Systematic approach to the growth of high-quality single-crystals of Sr3Ru2O7
• Metamagnetic Quantum Criticality Revealed by 17O-NMR in the Itinerant Metamagnet Sr3Ru2O7
• The de Haas-van Alphen effect across the metamagnetic transition in Sr${}_3$Ru${}_2$O${}_7$
• Phase Bifurcation and Quantum Fluctuations in Sr3Ru2O7
• Transport, magnetic, thermodynamic and optical properties in Ti-doped Sr_2RuO_4

Cited by in corpus (4)

• Half-metallic ferromagnetism in Sr${}_3$Ru${}_2$O${}_7$
• Competing magnetic orders in quantum critical Sr${}_3$Ru${}_2$O${}_7$
• Tipping the magnetic instability in paramagnetic Sr${}_3$Ru${}_2$O${}_7$ by Fe impurities
• Structural and magnetic field effects on spin fluctuations in Sr${}_3$Ru${}_2$O${}_7$