Magnetic excitations and electronic interactions in Sr2_2CuTeO6_6: a spin-1/2 square lattice Heisenberg antiferromagnet

Sr$_2$CuTeO$_6$ presents an opportunity for exploring low-dimensional magnetism on a square lattice of $S=1/2$ Cu$^{2+}$ ions. We employ ab initio multi-reference configuration interaction calculations to unravel the Cu$^{2+}$ electronic structure and to evaluate exchange interactions in Sr$_2$CuTeO$_6$. The latter results are validated by inelastic neutron scattering using linear spin-wave theory and series-expansion corrections for quantum effects to extract true coupling parameters. Using this methodology, which is quite general, we demonstrate that Sr$_2$CuTeO$_6$ is an almost realization of a nearest-neighbor Heisenberg antiferromagnet but with relatively weak coupling of 7.18(5) meV.Comment: 10 pages, 7 figure

Strategic Communications and Corporate Branding: a Study of Jebsen & Jessen Indonesia Group

Corporate communications hold a vital function to maintain the company's positive image and reputation in front of stakeholders. A corporate communications practitioner must be able to handle a variety of communication processes in an organization, including to determine the right strategy to reach its communications goal. The purpose of this research is to analyze the corporate communications strategy of Jebsen & Jessen Indonesia Group to create its corporate branding and reflect it with public relations strategic planning process. The researcher gathered the primary data from in-depth interview with key informant and combine it with secondary data from other relevant data. Afterwards, it was verified by triangulation to strengthen the credibility of data and continue with analysis process. This research concluded that Jebsen & Jessen Indonesia Group has implemented its corporate branding strategy accordingly to public relations strategic planning process. Some of the targets have been achieved in one year period, however there have been suggestions to improve the future corporate branding strategy formation

Effects of domestic cooking process on the chemical and biological properties of dietary phytochemicals

peer-reviewedFoods are good sources of vitamins, minerals and dietary fibers as well as phytochemicals, which are beneficial for the human body as nutritional supplements. The nutritional value (crude fibers, crude proteins, crude fats, flavonols, carotenoids, polyphenols, glucosinolate, chlorophyll, and ascorbic acid) and biological or functional properties (antioxidant activity, anticancer activity, or anti-mutagenic activity) of foods can be well retained and protected with the appropriate cooking methods. The chemical, physical and enzyme modifications that occur during cooking will alter the dietary phytochemical antioxidant capacity and digestibility. This paper reviewed the recent advances on the effects of domestic cooking process on the chemical and biological properties of dietary phytochemicals. Furthermore, the possible mechanisms underlying these changes were discussed, and additional implications and future research goals were suggested. The domestic cooking process for improving the palatability of foods and increasing the bioavailability of nutrients and bioactive phytochemicals has been well supported

High-Temperature Charge-Stripe Correlations in La1.675_{1.675}Eu0.2_{0.2}Sr0.125_{0.125}CuO4_4

We use resonant inelastic x-ray scattering to investigate charge-stripe correlations in La$_{1.675}$Eu$_{0.2}$Sr$_{0.125}$CuO$_4$. By differentiating elastic from inelastic scattering, it is demonstrated that charge-stripe correlations precede both the structural low-temperature tetragonal phase and the transport-defined pseudogap onset. The scattering peak amplitude from charge stripes decays approximately as $T^{-2}$ towards our detection limit. The in-plane integrated intensity, however, remains roughly temperature independent. Therefore, although the incommensurability shows a remarkably large increase at high temperature, our results are interpreted via a single scattering constituent. In fact, direct comparison to other stripe-ordered compounds (La$_{1.875}$Ba$_{0.125}$CuO$_4$, La$_{1.475}$Nd$_{0.4}$Sr$_{0.125}$CuO$_4$ and La$_{1.875}$Sr$_{0.125}$CuO$_4$) suggests a roughly constant integrated scattering intensity across all these compounds. Our results therefore provide a unifying picture for the charge-stripe ordering in La-based cuprates. As charge correlations in La$_{1.675}$Eu$_{0.2}$Sr$_{0.125}$CuO$_4$ extend beyond the low-temperature tetragonal and pseudogap phase, their emergence heralds a spontaneous symmetry breaking in this compound

High-Temperature Charge-Stripe Correlations in La1.675Eu0.2Sr0.125CuO4

We use resonant inelastic x-ray scattering to investigate charge-stripe correlations in La1.675Eu0.2Sr0.125CuO4. By differentiating elastic from inelastic scattering, it is demonstrated that charge-stripe correlations precede both the structural low-temperature tetragonal phase and the transport-defined pseudogap onset. The scattering peak amplitude from charge stripes decays approximately as T−2 towards our detection limit. The in-plane integrated intensity, however, remains roughly temperature independent. Therefore, although the incommensurability shows a remarkably large increase at high temperature, our results are interpreted via a single scattering constituent. In fact, direct comparison to other stripe-ordered compounds (La1.875Ba0.125CuO4, La1.475Nd0.4Sr0.125CuO4, and La1.875Sr0.125CuO4) suggests a roughly constant integrated scattering intensity across all these compounds. Our results therefore provide a unifying picture for the charge-stripe ordering in La-based cuprates. As charge correlations in La1.675Eu0.2Sr0.125CuO4 extend beyond the low-temperature tetragonal and pseudogap phase, their emergence heralds a spontaneous symmetry breaking in this compound