Point contacts
Metallic properties of magnesium point contacts
... quantum point contacts of alkali metals [10] and subsequent work showed that these are not limited to this chemical group [11, ...metallic contacts to demonstrate shell structures, the atoms require ...
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Microscopic origin of the 1 3 G0 conductance observed in oxygen doped silver quantum point contacts
... It should be noted that the distance between the two Ag apex atoms in the AgO-P junction is much larger than that of a clean Ag point contact [Fig. 1(a)], and one may wonder whether the small value of T(E F ) in ...
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Electron-electron interaction effects in quantum point contacts
... In the latter case, interaction effects due to semiclassical slowing are in principle also present on the higher conductance plateaus. However, in this case the other completely open channels screen the effective ...
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Aharonov-Bohm Type Oscillations in a System of Two Tunnel Point-Contacts in the Presence of a Single Scatterer: Determination of the Depth of the Buried Impurity
... tunnel point-contacts and a single subsurface scatterer in the presence of a magnetic field is investigated ...between contacts, the defect position, and the magnetic field is ...
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Quantum point contacts and resistive switching in Ni/NiO nanowire junctions
... Metal oxide devices that exhibit resistive switching are leading candidates for non-volatile memory applications due to their potential for fast switching, low-power operation, and high device density. It is widely ...
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Quantum point contacts
... The fundamental reason that the local equihbrium approach of Section 4 (appropnate for weak magnetic fields) and the ideal contact approach of this section (for strong fields) yield iden[r] ...
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Influence of single defects on the conductance of tunnel point contacts between a normal metal and a superconductor
... Normal-Superconductor point-contact in the tunnel limit and analyzed the quantum interference effects originating from the scattering of quasiparticles by point-like ...
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Prediction of the Frictional Characteristics of Halogen-Free Ionic Liquids in Elastohydrodynamic Point Contacts.
... Minami et al. [25] studied the tribo-chemistry of phosphonium derived ILs and found that under similar loading conditions, the phosphonium salts performed better when compared to an imidazolium salt. It was also noted ...
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Thermo-electric properties of quantum point contacts
... We have used a current heating techniquef to ob- serve the characteristic quantum size effects in the thermo-electric properties of a quantum point contact. Our previous work on the quan[r] ...
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Conductance and supercurrent discontinuities in atomic size point contacts
... A technique is descnbed, which uses the adjustable stress m a bendmg beam to control the constnction diameter betwcen two electrodes The controllabihty of the constnction diameter is use[r] ...
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Surface Roughness and Density Effects in Thermal Elastohydrodynamic Lubrication Point Contacts
... surface roughness in elastohydrodynamic problem. The surface roughness was determined by measuring the actual surface of the bearing contact. It was noted that the surface roughness significantly influenced the film ...
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Magnetoresistance and electrical hysteresis in stable half metallic (La0 7Sr0 3 MnO3 and Fe3O4 nanoconstrictions
... mechanical point contacts by Garcia et ...Nickel point contacts formed in controlled break junctions 3 or nanoconstrictions formed in nanopores 4 usually exhibit a much smaller ...
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Anomalous non-linear shot noise at high voltage bias
... Important to note is that in the case of quantum interference the transmission takes the form T(E,V) = T(E + eV/2). A more detailed form of T( α E + β V) is not presented in this manuscript but is discussed in detail ...
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The 0 7 Anomaly in Quantum Point Contact; Many Body or Single Electron Effect?
... Apart from usual quantization steps on the ballistic conductance of quasi-one-dimensional con- ductor, an additional plateau-like feature appears at a fraction of about 0.7 below the first con- ductance step in ...
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Gate defined quantum confinement in InSe based van der Waals heterostructures
... Indium selenide, a post-transition metal chalcogenide, is a novel two-dimensional (2D) semiconductor with interesting electronic properties. Its tunable band gap and high electron mobility have already attracted ...
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Electron beams and waveguide modes: aspects of quantum ballistic transport
... A horn-like shape or a Potential barrier in the point contacts gives rise to collimation of the injected electron beam, and thereby has a dramatic eflect on magneto- transport effects.. [r] ...
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Harvesting dissipated energy with a mesoscopic ratchet
... : the left QPC is tuned on a conductance plateau and DC biased in order to increase the temperature. The series QPC on the left is either tuned on a plateau or opened. To con- vert the heat into electrical current, it is ...
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Tunnelling Spectroscopy on the Heavy-Fermion Superconductors UPd2Al3 and UNi2Al3 in the Normal State
... In URuz Siz, a strong dip in the differential conductance of point contacts was found below TN around zero bias, with a temperature dependence similar to the spin wave [r] ...
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Relationships Between Prior Experiences, Current Teaching Contexts, and Novice Teachers' Use of Concrete Representation for Mathematics Instruction
... or point contacts on the semiconductor surface. The point contact junction found widespread use in crystal radio receivers, and later led to the invention of the point contact transistor in ...
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Oscillatory thermopower of a quantum point contact
... The voltage, which is measured using point contact voltage probes, is even in the current and shows strong oscillations äs the number of subbands in either one of the point contacts is v[r] ...
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