Electrical properties of vanadium oxide subject to hydrogen plasma treatment

缺氧 Sr$_2$VFeAsO$_{3-δ}$ 电子态中氧化钒层的作用

Role of Vanadium-Oxide Layer in Electronic State of Sr$_2$VFeAsO$_{3-δ}$ with Oxygen Deficiency

本研究通过构建缺氧 Sr$_2$VFeAsO$_{3-δ}$ 随 c 轴参数变化的相图，发现约100 K的磁结构异常及V轨道有序迹象，揭示氧化钒层对FeAs层电子态的关键影响。

利用氧化铌纳米层的点电击穿形成纳米接触的特征

Features of nanocontact formed using point electrical breakdown of a niobium oxide nanolayer

本文研究室温下氧化铌纳米层点电击穿前后的电学特性，揭示击穿电压、纳米接触电阻与击穿方式及15–60 nm膜厚的关系，并发现约1 μA的最小击穿电流及非线性输运机制。

Enhanced paramagnetism of the 4d itinerant electrons in the rhodium oxide perovskite SrRhO3

Polycrystalline rhodium(IV) oxide perovskite SrRhO3 was obtained by high-pressure synthesis techniques, followed by measurements of the magnetic susceptibility, electrical resistivity, and specific heat. The title compound has five 4d-electrons per perovskite unit and shows Fermi-liquid behavior in its electrical resistivity. The magnetic susceptibility is large [chi(300K) \~1.1*10^{-3} emu/mol-Rh] and proportional to 1/T^2 (< 380 K), while there is no magnetic long-range order above 1.8 K. The specific heat measurements indicate a probable magnetic contribution below ~ 15 K, which is not pred…

Nonlocal electrical conductivity coefficient sigma sub-k

A nonlocal functional is used to calculate superconducting properties of barium yttrium copper oxide.

The effect of atomic structure on the electrical response of aluminium oxide tunnel junctions

Many nanoelectronic devices rely on thin dielectric barriers through which electrons tunnel. For instance, aluminium oxide barriers are used as Josephson junctions in superconducting electronics. The reproducibility and drift of circuit parameters in these junctions are affected by the uniformity, morphology, and composition of the oxide barriers. To improve these circuits the effect of the atomic structure on the electrical response of aluminium oxide barriers must be understood. We create three-dimensional atomistic models of aluminium oxide tunnel junctions and simulate their electronic tra…