spin – TechConnect Briefs

Controlling Oxidation Reaction on Platinum by Spin Manipulation

Sison Escaño M.C., Nguyen T.Q., Nakanishi H., Kasai H., Osaka University, JP

Oxidation of metal surface is of outstanding practical importance in microelectronics, energy conversion systems and environmental devices. As an oxidation catalyst, platinum (Pt) is widely used in chemical and automotive industries. Thus far, the dissociative [...]

Spin Density Functional Theory Simulations of Quantum Point Contacts: An Investigation of Spin Filtering Effects

Akis R., Ferry D.K., Arizona State University, US

We present simulations of quantum wires and quantum point contacts (QPCs) formed in semiconductor heterostructures. Conductance measurements for such structures is quantized with plateaus at integer multiples of G_0= (2e^2/h) as function of gate voltage, [...]

Tunneling Spectrum of Single-Spin Oscillations

Bulaevskii L.N., Hruska M., Ortiz G., Los Alamos National Laboratory, US

We consider tunneling between electrodes via a microscopic system which can be modeled by the two-level Hamiltonian (a localized spin 1/2 probed by STM or a quantum dot). Measurements of the tunneling current I(t) in [...]