Chih-Wei Chen

Impurity-Induced Plasmon Damping in Individual Cobalt-Doped Hollow Au Nanoshells

The optical properties of plasmonic nanoparticles in the size range corresponding to the electrostatic, or dipole, limit have the potential to reveal effects otherwise masked by phase retardation. Here we examine the optical properties of individual, sub-50 nm hollow Au nanoshells (Co-HGNS), where Co is the initial sacrificial core nanoparticle, using single particle total internal reflection scattering (TIRS) spectroscopy. The residual Co present in the metallic shell induces a substantial broadening of the homogeneous plasmon resonance line width of the Co-HGNS, where the full width at half-maximum (fwhm) broadens proportionately with increasing Co content. This doping-induced line broadening provides a strategy for controlling plasmon line width independent of nanoparticle size, and has the potential to substantially modify the relative decay channels for localized nanoparticle surface plasmons.

Very large magnetoresistance in Fe0.28TaS2 single crystals

Magnetic moments intercalated into layered transition metal dichalcogenides are an excellent system for investigating the rich physics associated with magnetic ordering in a strongly anisotropic, strong spin-orbit coupling environment. We examine electronic transport and magnetization in Fe

Very large magnetoresistance in Fe 0.28 TaS 2 single crystals

_{0.28}

Very large magnetoresistance inFe0.28TaS2single crystals

TaS

Thermally driven analog of the Barkhausen effect at the metal-insulator transition in vanadium dioxide

_{2}

Synthesis of Phase‐Pure Ferromagnetic Fe3P Films from Single‐Source Molecular Precursors

, a highly anisotropic ferromagnet with a Curie temperature

Magnetic and transport properties of the layered transition-metal pnictides R3T4As4O2−δ (R = La, Ce, Pr, Nd, and Sm, T = Ni, Cu)

T_{\mathrm{C}} \sim 68.8~

Enhanced ferromagnetism induced by structural phase transitions in Co2As1−xPx

K. We find anomalous Hall data confirming a dominance of spin-orbit coupling in the magnetotransport properties of this material, and a remarkably large field-perpendicular-to-plane MR exceeding 60% at 2 K, much larger than the typical MR for bulk metals, and comparable to state-of-the-art GMR in thin film heterostructures, and smaller only than CMR in Mn perovskites or high mobility semiconductors. Even within the Fe

Large magnetoresistance induced by crystallographic defects in Fe

_x

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TaS