Field-tunable spin-density-wave phases in Sr3Ru2O7

Authors :: Robert Bewley
Christopher Lester
R. S. Perry
Silvia Ramos
Stephen M Hayden
E. M. Forgan
Dmitry D. Khalyavin
T. P. Croft
Pascal Manuel
Tatiana Guidi
Source :: Lester, C, Ramos, S, Perry, R S, Croft, T P, Bewley, R I, Guidi, T, Manuel, P, Khalyavin, D D, Forgan, E M & Hayden, S M 2015, ' Field-tunable spin-density-wave phases in Sr3Ru2O7 ', Nature Materials, vol. 14, no. 4, pp. 373-378 . https://doi.org/10.1038/nmat4181
Publication Year :: 2014
Abstract: The conduction electrons in a metal experience competing interactions with each other and the atomic nuclei. This competition can lead to many types of magnetic order in metals. For example, in chromium the electrons order to form a spin-density-wave (SDW) antiferromagnetic state. A magnetic field may be used to perturb or tune materials with delicately balanced electronic interactions. Here we show that the application of a magnetic field can induce SDW magnetic order in a metal, where none exists in the absence of the field. We use magnetic neutron scattering to show that the application of a large (~8T) magnetic field to the metamagnetic perovskite metal Sr3Ru2O7 can be used to tune the material through two magnetically-ordered SDW states. The ordered states exist over relatively small ranges in field (<br />Legend in Fig. 3(b) corrected