Exotic Kondo-hole band resistivity and magnetoresistance of Ce1−x_{1-x}Lax_{x}Os4_4Sb12_{12} alloys

Electrical resistivity measurements of non-magnetic single-crystalline Ce$_{1-x}$La$_x$Os$_4$Sb$_{12}$ alloys, $x=0.02$ and 0.1, are reported for temperatures down to 20 mK and magnetic fields up to 18 T. At the lowest temperatures, the resistivity of Ce$_{0.98}$La$_{0.02}$Os$_4$Sb$_{12}$ has a Fermi-liquid-like temperature variation $\rho=\rho_0+A T^2$, but with negative $A$ in small fields. The resistivity has an unusually strong magnetic field dependence for a paramagnetic metal. The 20 mK resistivity increases by 75% between H=0 and 4 T and then decreases by 65% between 4 T and 18 T. Similarly, the $A$ coefficient increases with the field from -77 to 29$\mu\Omega$cmK$^{-2}$ between H=0 and 7 T and then decreases to 18$\mu\Omega$cmK$^{-2}$ for 18 T. This nontrivial temperature and field variation is attributed to the existence of a very narrow Kondo-hole band in the hybridization gap, which pins the Fermi energy. Due to disorder the Kondo-hole band has localized states close to the band edges. The resistivity for $x=0.1$ has a qualitatively similar behavior to that of $x=0.02$, but with a larger Kondo-hole band

Anomalous low temperature state of CeOs4Sb12: Magnetic field and La-impurity study

Specific heat for single crystalline samples of Ce1-xLaxOs4Sb12 at zero-field and magnetic fields to 14 T is reported. Our results confirm enhanced value of the electronic specific heat coefficient in the paramagnetic state. They provide arguments for the intrinsic origin of the 1.1 K anomaly. This transition leads to opening of the gap at the Fermi surface. This low temperature state of CeOs4Sb12 is extremely sensitive to chemical impurities. 2% of La substituted for Ce suppresses the transition and reduces the electronic specific heat coefficient. The magnetic field response of the specific heat is also anomalous.Comment: 4 pages, 3 figure

Endles Change

This is a book review of "Never-Ending Stories: Adaptation, Canonisation, and Ideology in Children’s Literature". The book was edited by Sylvie Geerts and Sara Van den Bossche. The book\u27s topics range from fairy tale and story adaptations, through retellings of South African stories and ancient myths, to adaptation of comics

Social & Legal Perspectives on Underuse of Medication-Assisted Treatment for Opioid Dependence

Medication-assisted treatment (MAT) in combination with counseling is considered the most effective treatment for opioid dependence by the World Health Organization, U.S. Department of Health and Human Services, and American Society of Addiction Medicine. Two MAT medications, buprenorphine and methadone, are considered essential medicines by the World Health Organization. Despite MAT’s effectiveness, it is severely underused in U.S. treatment settings, including physicians’ offices, hospitals, the Veterans Administration, residential treatment centers, prisons, and drug courts. The dissertation examines social and legal reasons for under-use of MAT in the U.S., including dominance of abstinence-only treatment methods, separation of addiction treatment from mainstream medical treatment, insurance barriers, statutory and regulatory barriers, under-education of physicians in addiction medicine, under-education of mental health counselors in MAT, lack of physician involvement in the criminal justice system, and public understanding of addiction as a spiritual disease rather than a brain disease. The dissertation concludes with suggestions for expanding access to MAT, including government funding incentives and integration of MAT into existing addiction treatment centers and educational programs

House and Home

This is a book review of La casa nella Letteratura per l’infanzia contemporanea: Figure, modelli e visioni nella Letteratura per l’infanzia dal Novecento ad oggi which was edited by Giuseppe Zago, Carla Callegari and Marnie Campagnaro in 2019.Prikaz knjige La casa nella Letteratura per l’infanzia contemporanea: Figure, modelli e visioni nella Letteratura per l’infanzia dal Novecento ad oggi koju su uredili Giuseppe Zago, Carla Callegari i Marnie Campagnaro 2019. godine

America Needs the TREAT Act: Expanding Access to Effective Medication for Treating Addiction

The article focuses on the underuse of buprenorphine because it is the most widely used medication for treating opioid dependence that is cost-effective in the United States. It discusses restrictions placed on prescribers under the Drug Addiction Treatment Act (DATA) of 2000 and the need to reintroduce the Recovery Enhancement for Addiction Treatment Act