We studied Fe double layer films on W(110) to investigate the role of strain relaxation in determination of the magnetic ground states. The spin reorientation transition (SRT) between perpendicular and in-plane magnetization takes place with varying density of dislocation lines as ...
We report the direct measurement of individual grain boundary (GB) resistances and the critical role of GB structure in the increased resistivity in copper nanowires. By measuring both intra- and inter-grain resistance with a four-probe ...
The recent Letter by Zhang et al.[1] reported on a local defect structure for the charge density wave (CDW) along In wires formed on Si(111) [2,3]. This work interpreted the defect as the soliton excitation and addressed its atomic ...
Complex nanostructures such as branched semiconductor nanotetrapods are promising building blocks for next-generation nanoelectronics. Here we report on the electrical transport properties of individual CdS tetrapods in a field effect transistor (FET) configuration with a ...
Copper is the current interconnect metal of choice in integrated circuits. As interconnect dimensions decrease, the resistivity of copper increases dramatically because of electron scattering from surfaces, impurities, and grain boundaries (GBs) and threatens to ...
The complex interplay between the electron and lattice degrees of freedom produces multiple nearly degenerate electronic states in correlated electron materials. The competition between these degenerate electronic states largely determines the functionalities of the system, ...
We have fabricated an ultrahigh-vacuum-processed, ordered, single-crystalline nanodotarray. By mapping the magnetization of the nanodots with spin polarized scanning tunneling microscopy in the same chamber where they were grown, we are able to understand how the short-range order of the nanodot array is determined by the magnetostatic dipole interaction among ...
The spatially resolved electrical transport properties have been studied on the surface of optimally doped superconducting Ba(Fe1−xCox)2As2 single crystal by using a four-probe scanning tunneling microscopy. While some nonuniform contrast appears near the edge of the cleaved ...
A defect-state mediated conductance blockade effect has been studied in magnetic tunnel junctions consisting of La0.7Sr0.3MnO3 (LSMO) electrodes and a SrTiO3 (STO) barrier. The blockade threshold is an order of magnitude greater than the Coulomb charging ...
A conductance blockade effect has been observed in the magnetic tunnel junction consisting of La0.7Sr0.3MnO3 electrodes and a SrTiO3 barrier. The blockade effect is correlated with the space-charge trap states in the barrier. The blockade threshold eVB = 128 meV is significantly greater than Coulomb charging energy EC = ...
