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.

arXiv comment5 pages, 3 Figures

References in corpus (16)

• Quantum properties of atomic-sized conductors
• Resistivity due to a Domain Wall in Ferromagnetic Metal
• Geometrically constrained magnetic wall
• The Antiferromagnetic Band Structure of La2CuO4 Revisited
• A first-principles approach to electrical transport in atomic-scale nanostructures
• Fullerene-based molecular nanobridges: A first-principles study
• Absence of magnetically-induced fractional quantization in atomic contacts
• Conductance Quantization and Magnetoresistance in Magnetic Point Contacts
• Ballistic electron transport through magnetic domain walls
• Ballistic magnetoresistance in nickel single-atom conductors
• Asymmetric I-V characteristics and magnetoresistance in magnetic point contacts
• Electronic transport and vibrational modes in the smallest molecular bridge: H2 in Pt nanocontacts
• Magnetoresistance of atomic-sized contacts: an ab-initio study
• Selective d-state Conduction Blocking in Nickel Nanocontacts
• Density functional study of Ni bulk, surfaces and the adsorbate systems Ni(111)(root 3 x root 3)-Cl, and Ni(111)(2 x 2)-K
• Complex band structure with ultrasoft pseudopotentials: fcc Ni and Ni nanowire

Cited by in corpus (37)

• 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
• Metallic, Magnetic and Molecular Nanocontacts
• Coulomb blockade in electron transport through a C${}_{60}$ molecule from first principles
• Kondo effect and conductance of nanocontacts with magnetic impurities
• Regular atomic narrowing of Ni, Fe and V nanowires resolved by 2D correlation analysis
• From ballistic transport to tunneling in electromigrated ferromagnetic breakjunctions
• Critical comparison of electrode models in density functional theory based quantum transport calculations
• Theoretical study of the conductance of ferromagnetic atomic-sized contacts
• Ballistic Conductance and Magnetism in Short Tip-Suspended Ni Nanowires
• Transport in magnetically ordered Pt nanocontacts
• Quantized Conductance of a Single Magnetic Atom
• Magnetoresistance of atomic-scale electromigrated nickel nanocontacts
• Anisotropic magnetoresistance in nanocontacts
• Electronic transport in iron atomic contacts: from the infinite wire to realistic geometries
• Orbital eigenchannel analysis for ab-initio quantum transport calculations
• The nature of the electrical conduction in ferromagnetic atomic-size contacts: insights from shot noise measurements and theoretical simulations
• Emergence of half-metallicity in suspended NiO chains
• Statistical analysis of Ni nanowires breaking processes: a numerical simulation study
• Theoretical Study of Spin-dependent Electron Transport in Atomic Fe Nanocontacts
• Conduction eigenchannels of atomic-sized contacts: Ab initio KKR Green's function formalism
• Perfect spin filtering by symmetry in molecular junctions
• Domain-wall induced large magnetoresistance effects at zero applied field in ballistic nanocontacts
• 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
• Tailoring magnetoresistance through rotating Ni particles
• Directional bonding explains high conductance values of atomic contacts in bcc metals
• Conductance of Ferro- and Antiferro-magnetic single-atom contacts: A first-principles study
• Conductance of single-atom magnetic junctions: A first-principles study
• Anisotropic magnetoresistance in single electron transport
• Electronic structure and transport properties of atomic NiO spinvalves
• Jump of tunneling magnetoresistance in magnetic nanocontacts with mismatched cross section
• Scanning Tunneling Microscopy in high vectorial magnetic fields
• Exploring Three-Atom-Thick Gold Structures as a Benchmark for Atomic-Scale Calibration of Break-Junction Systems