Onset of dielectric modes at 110 K and 60 K due to local lattice distortions in nonsuperconductingYBa2Cu3O6.0crystals

Onset of dielectric modes at 110 K and 60 K due to local lattice distortions in nonsuperconducting YBa

We report the observation of two dielectric transitions at 110 and 60 K in the microwave response of nonsuperconducting YBa2Cu3O6.0 crystals. The transitions are characterized by a change in polarizability and presence of loss peaks, associated with overdamped dielectric modes. An explanation is presented in terms of changes in polarizability of the apical O atoms in the Ba–O layer, affected by...

Local laser cooling of Yb:YLF to 110 K.

Minimum achievable temperature of ~110 K is measured in a 5% doped Yb:YLF crystal at λ = 1020 nm, corresponding to E4-E5 resonance of Stark manifold. This measurement is in excellent agreement with the laser cooling model and was made possible by employing a novel and sensitive implementation of differential luminescence thermometry using balanced photo-detectors.

Protein dynamical transition at 110 K.

Proteins are known to undergo a dynamical transition at around 200 K but the underlying mechanism, physical origin, and relationship to water are controversial. Here we report an observation of a protein dynamical transition as low as 110 K. This unexpected protein dynamical transition precisely correlated with the cryogenic phase transition of water from a high-density amorphous to a low-densi...

Lattice of weak hyper K-ideals of a hyper K-algebra

In this note, we study the lattice structure on the class of all weak hyper K-ideals of a hyper K-algebra. We first introduce the notion of (left,right) scalar in a hyper K-algebra which help us to characterize the weak hyper K-ideals generated by a subset. In the sequel, using the notion of a closure operator, we study the lattice of all weak hyper K-ideals of ahyper K-algebra, and we prove a ...

Dielectric Study on Polar Binary Mixtures of (Ester-Alcohol) at 298.2 K