Ballistic magnetoresistance in different nanocontact configurations: a basis for future magnetoresistance sensors

Methods to fabricate nanocontacts for electrical addressing of single molecules

“…García et al developed a method in which the tips of two wires are brought to contact [13]. In their work, which is primarily concerned with magnetoconductivity, they describe how nanoscale contacts may be formed between magnetic and non-magnetic materials.…”

Spin-flip and domain wall magnetoresistance in quantum magnetic nanocontacts

“…The magnetic nanocontacts were proposed as a physical basis for a new generation of magnetoresistive sensors and read heads for computer hard disk drives [12]. The theory of magnetic nanocontacts considers the classical regime of conductance through the nanocontact [2,13], as well as the quantized conductance [14][15][16][17][18][19].…”

Mean-free path effects in magnetoresistance of ferromagnetic nanocontacts

“…Magnetic point contacts showing an extraordinary high magnetoresistance (MR) [1][2][3][4][5][6][7] offer a feasible avenue to a new generation of nanosize read heads for computer hard disks [8]. Theoretical studies of the MR phenomenon in magnetic nanocontacts [2,[9][10][11][12][13][14] were focused mainly on the contact size and conduction-band spin-polarization effects on the MR. Other important material parameters such as spin-dependent mean-free paths (MFP) of conduction electrons in contacting ferromagnetic metals had not been taken into account.…”