Coexistence of Superconductivity and Antiferromagnetism in Multilayered High-TcT_c Superconductor HgBa2_2Ca4_4Cu5_5Oy_y: A Cu-NMR Study

We report a coexistence of superconductivity and antiferromagnetism in five-layered compound HgBa$_2$Ca$_4$Cu$_5$O$_y$ (Hg-1245) with $T_c=108$ K, which is composed of two types of CuO$_2$ planes in a unit cell; three inner planes (IP's) and two outer planes (OP's). The Cu-NMR study has revealed that the optimallydoped OP undergoes a superconducting (SC) transition at $T_c=108$ K, whereas the three underdoped IP's do an antiferromagnetic (AF) transition below $T_N\sim$ 60 K with the Cu moments of $\sim (0.3-0.4)\mu_B$. Thus bulk superconductivity with a high value of $T_c=108$ K and a static AF ordering at $T_N=60$ K are realized in the alternating AF and SC layers. The AF-spin polarization at the IP is found to induce the Cu moments of $\sim0.02\mu_B$ at the SC OP, which is the AF proximity effect into the SC OP.Comment: 6 pages, 8 figure

(Re)visitando a la madre (des)naturalizada : búsquedas y encuentros entre personas adoptadas en Chile y sus madres de origen

Este artículo es resultado de los proyectos FONDECYT N°3170338 "Adopciones en Chile: la construcción de narrativas sobre los orígenes y la identidad", REDI170133 "Investigación Interdisciplinaria sobre Políticas Reproductivas y Parentales", Programa Coope-ración Internacional (PCI), ambos financiados por la Comisión Nacional de Investigación Científica y Tecnológica (CONICYT) de Chile; y del Proyecto I+D CSO2015-64551-C3-1-R "Del control de la natalidad a la ansiedad demográfica: comunicación, secreto y anonimato en las tecnologías reproductivas del siglo XXI", MINECO/FEDER.En este artículo se presentan algunos resultados de una investigación cualitativa que explora y analiza las narrativas de un grupo de personas adultas que fueron adoptadas en Chile, que han buscado sus orígenes y que han establecido contacto con sus madres de origen. En sus narrativas, las personas entrevistadas adhieren, tensionan y/o desafían los principios y discursos que conforman las políticas y prácticas adoptivas hegemónicas, resignificando de formas diversas su experiencia de adopción en el proceso de (re)construcción de sus identidades y de reorganización de sus relaciones de parentesco. Se discuten las tensiones y ambivalencias que se juegan en los procesos de búsquedas de orígenes y los desafíos asociados.This paper presents some results of a qualitative research that explores and analyzes the narratives of a group of adults who were adopted in Chile, and who have searched for their origins and made contact with their birth mothers. In their narratives, the people interviewed adhere to, strain, and/or challenge the principles and discourses that make up hegemonic adoption policies and practices, resignifying their experience of adoption in various ways, as they (re)build their identities and reorganize their kinship relationships. It discusses the tensions and ambivalences that play out in the search for origins and the challenges associated with it

Psychosocial Treatment of Children in Foster Care: A Review

A substantial number of children in foster care exhibit psychiatric difficulties. Recent epidemiologi-cal and historical trends in foster care, clinical findings about the adjustment of children in foster care, and adult outcomes are reviewed, followed by a description of current approaches to treatment and extant empirical support. Available interventions for these children can be categorized as either symptom-focused or systemic, with empirical support for specific methods ranging from scant to substantial. Even with treatment, behavioral and emotional problems often persist into adulthood, resulting in poor functional outcomes. We suggest that self-regulation may be an important mediat-ing factor in the appearance of emotional and behavioral disturbance in these children