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Journal article · Preprint article

Competing magnetic fluctuations in Sr3Ru2O7 probed by Ti doping

By Hooper, J.; Fang, M.H.; Zhou, M.; Fobes, D.; Dang, N.; Mao, Z.Q.; Feng, C.M.; Xu, Z.A.; Yu, M.H.; O'Connor, C.J.; Xu, G.J.; Andersen, Niels Hessel1,2,3; Salamon, M. ...and 3 more

From

Nano-Microstructures in Materials, Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark1

Materials Research Division, Risø National Laboratory for Sustainable Energy, Technical University of Denmark2

Risø National Laboratory for Sustainable Energy, Technical University of Denmark3

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.

Language: English
Year: 2007
Pages: 5
ISSN: 1550235x , 10980121 , 10953795 and 01631829
Types: Journal article and Preprint article
DOI: 10.1103/PhysRevB.75.060403
Keywords

Energiteknologier på vej

Other keywords

cond-mat.mtrl-sci cond-mat.str-el

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