Phys. Rev. Lett. 99, 217402 (2007) [4 pages]Field-Induced Paramagnons at the Metamagnetic Transition of Ca1.8Sr0.2RuO4See Also: Publisher's Note Received 30 March 2007; published 19 November 2007; corrected 21 November 2007 The magnetic excitations in Ca1.8Sr0.2RuO4 were studied across the metamagnetic transition and as a function of temperature using inelastic neutron scattering. At low temperature and low magnetic field the magnetic response is dominated by a complex superposition of incommensurate antiferromagnetic fluctuations. Upon increasing the magnetic field across the metamagnetic transition, paramagnon and finally well-defined magnon scattering is induced, partially suppressing the incommensurate signals. The high-field phase in Ca1.8Sr0.2RuO4, therefore, has to be considered as an intrinsically ferromagnetic state stabilized by the magnetic field. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.99.217402
DOI:
10.1103/PhysRevLett.99.217402
PACS:
78.70.Nx, 74.70.Pq, 75.40.Gb
See AlsoPublisher's Note: P. Steffens, Y. Sidis, P. Link, K. Schmalzl, S. Nakatsuji, Y. Maeno, and M. Braden, Publisher’s Note: Field-Induced Paramagnons at the Metamagnetic Transition of Ca1.8Sr0.2RuO4 [Phys. Rev. Lett. 99, 217402 (2007)], Phys. Rev. Lett. 99, 239901 (2007). |
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