title: Magnetoresistive nanosensors: controlling magnetism at the nanoscale.
abstract: The ability to detect the magnetic fields that surround us has promoted vast technological advances in sensing techniques. Among those, magnetoresistive sensors display an unpaired spatial resolution. Here, we successfully control the linear range of nanometric sensors using an interfacial exchange bias sensing layer coupling. An effective matching of material properties and sensor geometry improves the nanosensor performance, with top sensitivities of 3.7% mT(-1). The experimental results are well supported by 3D micromagnetic and magneto-transport simulations.
authors.affiliation: INESC-MN and IN, Rua Alves Redol 9, 1000-029 Lisboa, Portugal. Instituto Superior Tecnico (IST), Universidade de Lisboa, Av. Rovisco Pais, 1000-029 Lisboa, Portugal.
authors.forename: Diana C
authors.initials: DC
authors.lastname: Leitao
authors.forename: Ana V
authors.initials: AV
authors.lastname: Silva
authors.forename: Elvira
authors.initials: E
authors.lastname: Paz
authors.forename: Ricardo
authors.initials: R
authors.lastname: Ferreira
authors.forename: Susana
authors.initials: S
authors.lastname: Cardoso
authors.forename: Paulo P
authors.initials: PP
authors.lastname: Freitas