RT Journal Article
T1 Upper limit to magnetism in LaAlO_3/SrTiO_3 heterostructures
A1 Fitzsimmons, Michael
A1 Hengartner, Nicolas
A1 Singh, Surendra
A1 Zhernenkov, Mikhail
A1 Bruno, Flavio Yair
A1 Santamaría Sánchez-Barriga, Jacobo
A1 Brinkman, Alexander
A1 Huijben, Mark
A1 Molegraaf, Hajo
A1 de la Venta, Jose
A1 Schuller, Ivan K.
AB Using polarized neutron reflectometry we measured the neutron spin-dependent reflectivity from four LaAlO3/SrTiO3 superlattices. Our results imply that the upper limit for the magnetization averaged over the lateral dimensions of the sample induced by an 11 T magnetic field at 1.7 K is less than 2 G. SQUID magnetometry of the neutron superlattice samples sporadically finds an enhanced moment, possibly due to experimental artifacts. These observations set important restrictions on theories which imply a strongly enhanced magnetism at the interface between LaAlO3 and SrTiO3.
PB American Physical Society
SN 0031-9007
YR 2011
FD 2011
LK https://hdl.handle.net/20.500.14352/91632
UL https://hdl.handle.net/20.500.14352/91632
LA eng
NO Fitzsimmons, M.R., Hengartner, N.W., Singh, S., Zhernenkov, M., Bruno, F.Y., Santamaria, J., Brinkman, A., Huijben, M., Molegraaf, H.J.A., De La Venta, J., Schuller, I.K.: Upper Limit to Magnetism in LaAlO 3 / SrTiO 3 Heterostructures. Phys. Rev. Lett. 107, 217201 (2011). https://doi.org/10.1103/PhysRevLett.107.217201
NO Department of Energy (Estados Unidos)
NO Ministerio de Ciencia, Innovación y Universidades (España)
NO Comunidad de Madrid
DS Docta Complutense
RD 6 abr 2025