We have been studying the pulse radiolysis using photo-cathode rf gun at Waseda Univ. Pulse radiolysis is one of the powerful methods to trace early chemical reactions by ionizing radiation. In pulse radiolysis, the probe light absorption, which produced by active species formed by electron beam of rf gun, is measured at each wavelength and made possible to trace reactions. Therefore, we have u...

Two-dimensional (2D) materials with robust magnetism have drawn immense attention for their promising applications in spintronics. Recently, intrinsic ferromagnetic vanadium triiodide (VI3) has been synthesized experimentally. To enhance its spintronic property, we modified VI3 by interstitial doping 3d transition metals (TM) and used first-principles calculations to investigate the geometric s...

Motivated by a mean field-like resistive behavior in magnetic fields commonly seen in various superconducting cuprates and organics with strong fluctuation, superconducting (SC) quantum fluctuation effects on resistive behaviors are reexamined by putting emphasis on their roles in the so-called thermal vortex liquid regime. By incorporating the quantum fluctuations and a vortex pinning effect i...

The primary objective of this paper is to apply the CHATUE algorithm, presented in the Part-1 paper of this article, to multi-user Single Carrier Frequency Division Multiple Access (SC-FDMA) Systems. The CHATUE algorithm connects turbo equalizers neighboring in time in the absence of Cyclic Prefix or Guard Interval, where the latest version of the reduced complexity equalization technique, Freq...

Dielectric crystals doped with Ce3+ , Eu2 +, Sm2 +, and Yb2 + display broadband 5d-to-4f emission, and are candidate solid-state tunable laser materials. The absorption and emission wavelengths, however, are very host-sensitive, and a better understanding of 5d crystal field interactions is needed in order to design high performance materials. The adequacy of a purely ionic model of the crystal...

The generalized gradient approximation (GGA) to density functional theory (DFT) calculations indicate that the highly localized states derived from the defects of nitrogen doped carbon nanotube with divacancy (4ND-CNxNT) contribute to strong Sc and Ti bindings, which prevent metal aggregation. Comparison of the H2 adsorption capability of Sc over Ti-decorated 4ND-CNxNT shows that Ti cannot be u...

A softening of phonon-dispersion has been observed experimentally in under-doped cuprate superconductors at the charge-density wave (CDW) ordering vector. Interestingly, occurs below superconducting (SC) transition temperature T$_{c}$, contrast to metallic systems, where usually CDW onset T$_{\text{CDW}}$. An understanding `anomalous' nature phonon-softening and its connection pseudo-gap phase ...

We report on magnetic studies of inhomogeneous commercial and synthesized amorphous carbon (a-C) and a-C doped with sulfur (a-CS) powders which exhibit (i) peculiar magnetic behavior and (ii) traces of two superconducting (SC) phases TC ~ 33 and at 65 K. (i) The temperature dependence of zero-field-cooled (ZFC) curves measured up to room temperature show well distinguished elusive peaks at arou...