10 research outputs found
Small intestinal perforation caused by metastasis from squamous cell carcinoma of scalp—One case report
The Clinicopathologic Characteristics of Colorectal Cancer in Patients under 50 years of Age: Experience of an Oncology Center
Sequential combination chemoimmunotherapy for various malignant tumors: Clinical and laboratory results
Phase explosion and recoil-induced ejection in resonant-infrared laser ablation of polystyrene
A spin-selective approach for surface states at Co nanoislands
During recent years the surface electronic states of cobalt nanoislands grown on Cu(111) and Au(111) have been extensively studied and still yield fascinating results. Among magnetic surfaces, cobalt islands are particularly appealing because of their spin-polarized electronic states near the Fermi energy, involving localized d states of minority character, as well as free-like s–p states of majority character. We show here that these states are a sensitive probe to minute changes of structural details such as strain and stacking, and therefore constitute an ideal playground to study the interplay between structural and spin-related properties. Due to their size, cobalt islands on Cu(111) offer the additional opportunity to host single-magnetic adsorbates suitable for spin-polarized scanning tunneling microscopy and spectroscopy (SP-STM and SP-STS). We establish here that, in an energy interval just below the Fermi level, the spin-polarization of a transition-metal atom is governed by surface-induced states opposite in sign compared to the island, while the spin-polarization of Co-Phthalocyanine molecules is governed by molecular states. This opens up interesting perspectives for controlling and engineering spin-polarized phenomena at the nanoscale