Magnetic and orbital blocking in Ni nanocontacts

Abstract

We address the fundamental question of whether magneto-resistance (MR) of atomic-sized contacts of Nickel is very large because of the formation of a domain wall (DW) at the neck. Using {\em ab initio} transport calculations we find that, as in the case of non-magnetic electrodes, transport in Ni nanocontacts depends very much on the orbital nature of the electrons. Our results are in agreement with several experiments in the average value of the conductance. On the other hand, contrary to existing claims, DW scattering does {\em not} account for large MR in Ni nanocontacts.

5 pages, 3 Figures

References in corpus (1)

• Magnetoresistance of atomic-sized contacts: an ab-initio study

Cited by in corpus (22)

• GOLLUM: a next-generation simulation tool for electron, thermal and spin transport
• The Kondo effect in ferromagnetic atomic contacts
• Theoretical analysis of the conductance histograms and structural properties of Ag, Pt and Ni nanocontacts
• Dynamical Mean-Field Theory for Molecular Electronics: Electronic Structure and Transport Properties
• Coulomb blockade in electron transport through a C${}_{60}$ molecule from first principles
• Regular atomic narrowing of Ni, Fe and V nanowires resolved by 2D correlation analysis
• Theoretical study of the conductance of ferromagnetic atomic-sized contacts
• Transport in magnetically ordered Pt nanocontacts
• Quantized Conductance of a Single Magnetic Atom
• Ballistic Conductance and Magnetism in Short Tip-Suspended Ni Nanowires
• Anisotropic magnetoresistance in nanocontacts
• Electronic transport in iron atomic contacts: from the infinite wire to realistic geometries
• Emergence of half-metallicity in suspended NiO chains
• Statistical analysis of Ni nanowires breaking processes: a numerical simulation study
• Perfect spin filtering by symmetry in molecular junctions
• Mechanical, Electrical, and Magnetic Properties of Ni Nanocontacts
• Highly conductive and complete spin filtering of nickel atomic contacts in a nitrogen atmosphere
• Analysis of the Kondo effect in ferromagnetic atomic-sized contacts
• Anisotropic magnetoresistance in single electron transport
• Electronic structure and transport properties of atomic NiO spinvalves
• Exploring Three-Atom-Thick Gold Structures as a Benchmark for Atomic-Scale Calibration of Break-Junction Systems
• Scanning Tunneling Microscopy in high vectorial magnetic fields