Transport in magnetically ordered Pt nanocontacts

Abstract

Pt nanocontacts, like those formed in mechanically controlled break junctions, are shown to develop spontaneous local magnetic order. Our density functional calculations predict that a robust local magnetic order exists in the atoms presenting low coordination, i. e., those forming the atom-sized neck. In contrast to previous work, we thus find that the electronic transport can be spin-polarized, although the net value of the conductance still agrees with available experimental information. Experimental implications of the formation of this new type of nanomagnet are discussed.

4 pages, 3 figures

References in corpus (21)

• Quantum properties of atomic-sized conductors
• Common Origin for Surface Reconstruction and the Formation of Chains of Metal Atoms
• Observation of a parity oscillation in the conductance of atomic wires
• A first-principles approach to electrical transport in atomic-scale nanostructures
• Evidence of spontaneous spin polarized transport in magnetic nanowires
• Fullerene-based molecular nanobridges: A first-principles study
• Magnetism in Atomic-Sized Palladium Contacts and Nanowires
• Ballistic anisotropic magnetoresistance
• Absence of magnetically-induced fractional quantization in atomic contacts
• Magnetic phenomena in 5d transition metal nanowires
• CO adsorption on the Pt(111) surface: a comparison of a gradient corrected functional and a hybrid functional
• Magnetic and orbital blocking in Ni nanocontacts
• Tunnel Magneto-resistance in GaMnAs: going beyond Jullière formula
• Coulomb blockade in electron transport through a C${}_{60}$ molecule from first principles
• Conductance of single-atom platinum contacts: Voltage-dependence of the conductance histogram
• Interference and k-point sampling in the supercell approach to phase-coherent transport
• Electronic transport and vibrational modes in the smallest molecular bridge: H2 in Pt nanocontacts
• Different wavelength oscillations in the conductance of 5d metal atomic chains
• Single channel conductance of H${}_2$ molecules attached to platinum or palladium electrodes
• Effect of electron correlations in Pd, Ni, and Co monowires
• Emerging Magnetism in Platinum Nanowires

Cited by in corpus (19)

• Benchmark density functional theory calculations for nano-scale conductance
• Metallic, Magnetic and Molecular Nanocontacts
• Theoretical study of the conductance of ferromagnetic atomic-sized contacts
• Shot noise and magnetism of Pt atomic chains: accumulation of points at the boundary
• Predictions for the formation of new atomic chains in Mechanically Controllable Break Junction experiments
• 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
• Millikelvin scanning tunneling microscope at 20/22 T with a graphite enabled stick-slip approach and an energy resolution below 8$\mu$eV: Application to conductance quantization at 20 T in single atom point contacts of Al and Au
• Conduction eigenchannels of atomic-sized contacts: Ab initio KKR Green's function formalism
• Magnetically hindered chain formation in transition-metal break junctions
• Competing magnetic anisotropies in atomic-scale junctions
• Platinum atomic contacts: from tunneling to contact
• Current density functional framework for spin-orbit coupling: Extension to periodic systems
• Efficient Treatment of Relativistic Effects with Periodic Density Functional Methods: Energies, Gradients, and Stress Tensors
• Spin locking at the apex of nano-scale platinum tips
• Scanning Tunneling Microscopy in high vectorial magnetic fields