Quantum oscillations originating from the quantization of electron cyclotron orbits provide sensitive diagnostics of electron bands and interactions. We report on nanoscale imaging of the thermodynamic magnetization oscillations caused by the de Haas-van Alphen effect in moiré graphene. Scanning by means of superconducting quantum interference device (SQUID)-on-tip in Bernal bilayer graphene crystal axis-aligned to hexagonal boron nitride reveals large magnetization oscillations with amplitudes reaching 500 Bohr magneton per electron in weak magnetic fields, unexpectedly low frequencies, and high sensitivity to superlattice filling fraction.
View Article and Find Full Text PDFObjective: The Community Rehabilitation of Persons with Mental Health Disability Law (2000a) is one of Israel's most important pieces of social legislation. It grants persons with psychiatric disabilities the right to receive rehabilitation in the community. This article is a case study of the development and implementation of a policy that led to the Rehabilitation Reform and that has become an important component in Israel's comprehensive mental health reform.
View Article and Find Full Text PDFWe propose magic-angle helical trilayer graphene (HTG), a helical structure featuring identical rotation angles between three consecutive layers of graphene, as a unique and experimentally accessible platform for realizing exotic correlated topological states of matter. While nominally forming a supermoiré (or moiré-of-moiré) structure, we show that HTG locally relaxes into large regions of a periodic single-moiré structure realizing flat topological bands carrying nontrivial valley Chern number. These bands feature near-ideal quantum geometry and are isolated from remote bands by a very large energy gap, making HTG a promising platform for experimental realization of correlated topological states such as integer and fractional quantum anomalous Hall states.
View Article and Find Full Text PDFElectronic states in quasicrystals generally preclude a Bloch description, rendering them fascinating and enigmatic. Owing to their complexity and scarcity, quasicrystals are underexplored relative to periodic and amorphous structures. Here we introduce a new type of highly tunable quasicrystal easily assembled from periodic components.
View Article and Find Full Text PDFThis paper examines the role of policy entrepreneurs in the formation of a rehabilitation program in the field of mental health in Israel, shedding light on their role in general and specifically in mental health policy formation. Our research is based on a historical case study. The legislation process was examined through interviews with key actors in the legislative process and archival materials.
View Article and Find Full Text PDFConversion of electric current into heat involves microscopic processes that operate on nanometer length scales and release minute amounts of power. Although central to our understanding of the electrical properties of materials, individual mediators of energy dissipation have so far eluded direct observation. Using scanning nanothermometry with submicrokelvin sensitivity, we visualized and controlled phonon emission from individual atomic-scale defects in graphene.
View Article and Find Full Text PDFCommunity Ment Health J
July 2017
Purpose is to present the mental health rehabilitation reform enacted in Israel in 2000, and to analyze the challenges it faces in its second decade of implementation. Lessons are drawn with regard to other jurisdictions interested in reforming mental health services. Besides reviewing the reform's accomplishments and its contribution to the changes that have occurred in mental health services, the article also assesses the dangers it has to contend with.
View Article and Find Full Text PDFWe present a new nanoscale superconducting quantum interference device (SQUID) whose interference pattern can be shifted electrically in situ. The device consists of a nanoscale four-terminal-four-junction SQUID fabricated at the apex of a sharp pipet using a self-aligned three-step deposition of Pb. In contrast to conventional two-terminal-two-junction SQUIDs that display optimal sensitivity when flux biased to about a quarter of the flux quantum, the additional terminals and junctions allow optimal sensitivity at arbitrary applied flux, thus eliminating the magnetic field "blind spots".
View Article and Find Full Text PDFThis column describes an innovative, government-sponsored, countrywide mental health reform focusing on rehabilitation and community integration of persons with serious mental illness, which was enacted into law in Israel in 2000. The reform was part of the country's efforts to shift the locus of treatment and care from psychiatric institutions to the community. The authors review preliminary evidence of the impact of reform and offer cautionary notes regarding the future direction of its implementation.
View Article and Find Full Text PDFIsr J Psychiatry Relat Sci
April 2011
This study assessed efforts to reform the mental health (MH) service system in Israel, moving the locus of treatment and care from a mental hospital system to the community. It focuses on changes which occurred in MH policy and services especially during the last decade, evaluating trends and issues regarding legislation, clients, budgets and personnel of the system. Findings indicate a drastic decline in the number of psychiatric beds, length of stays in inpatient services, a reduction in the number of MH personnel, and a dramatic increase in rehabilitation services in the community.
View Article and Find Full Text PDFInt J Law Psychiatry
July 2007
Passage of the National Health Insurance Law (NHI) [National Health Insurance Law (NHI) (1994). Israel Law Code, 1469, 156 (Hebrew).] provided a window of opportunity for mental health reform in Israel.
View Article and Find Full Text PDFSoc Work Health Care
January 2003
The purpose of this paper is to discuss the role of the social work profession in the mental health service arena. It analyzes the changing mental health environment and the challenges facing social work. It stresses that the profession must adapt to the dramatic changes that have been taking place since the advent of deinstitutionalization and the need for community care for mentally ill persons.
View Article and Find Full Text PDFIn recent years many countries have embarked on various types of health and mental health reform. These reforms have in large part been driven by governments' concerns for cost containment which has, in turn, been driven by an increasing process of global marketization and the need to control national deficits. A critical issue in these reforms is the increased emphasis on the use of "market mechanisms" in the delivery of health and mental health services.
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