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"Roth, Joseph"
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Hidden transport phenomena in an ultraclean correlated metal
Advancements in materials synthesis have been key to unveil the quantum nature of electronic properties in solids by providing experimental reference points for a correct theoretical description. Here, we report hidden transport phenomena emerging in the ultraclean limit of the archetypical correlated electron system SrVO
3
. The low temperature, low magnetic field transport was found to be dominated by anisotropic scattering, whereas, at high temperature, we find a yet undiscovered phase that exhibits clear deviations from the expected Landau Fermi liquid, which is reminiscent of strange-metal physics in materials on the verge of a Mott transition. Further, the high sample purity enabled accessing the high magnetic field transport regime at low temperature, which revealed an anomalously high Hall coefficient. Taken with the strong anisotropic scattering, this presents a more complex picture of SrVO
3
that deviates from a simple Landau Fermi liquid. These hidden transport anomalies observed in the ultraclean limit prompt a theoretical reexamination of this canonical correlated electron system beyond the Landau Fermi liquid paradigm, and more generally serves as an experimental basis to refine theoretical methods to capture such nontrivial experimental consequences emerging in correlated electron systems.
A correlated material SrVO
3
has been considered to be a Fermi liquid, however previous studies have been limited to disordered samples. Here the authors study transport in ultraclean films of SrVO
3
, finding deviations from the Fermi liquid picture.
Journal Article
أسطورة السكير المقدس ومصير ناظر المحطة
تعتبر أسطورة السكير المقدس من أكثر الروايات المؤرقة التي كتبها جوزيف روث، تم إصدارها عام 1939، وهو نفس العام الذي توفي فيه الكاتب، تماما مثل أندرياس بطل الرواية توفي جوزيف روث في باريس بسبب الإفراط في الشرب ومع ذلك فهي ليست سيرة ذاتية، ولكن حكاية معجزة دنيوية حيث بعد العيش تحت الكباري حظي البطل المتشرد بمجموعة من الأحداث المتلاحقة سعيدة الحظ والتي رفعته لفترة وجيزة في مستوى مختلف من الوجود.
Book
Community Assessments for Public Health Emergency Response (CASPERs)—US Virgin Islands, 2017–2018
Objectives. To assess preparedness levels of communities to help public health and others plan for disasters or emergencies and tailor messaging to increase community preparedness. Methods. US Virgin Islands Department of Health conducted a Community Assessment for Public Health Emergency Response (CASPER) in June 2017, 2 hurricane response CASPERs in November 2017, and a recovery CASPER in February 2018. CASPER is a 2-stage cluster sampling method designed to provide household-based information about a community’s needs in a timely, inexpensive, and representative manner. Results. Roughly the same amount of households reported having a 3-day supply of food and water before and 3 months after the hurricanes. During the response, approximately a third of households resupplied between 3 and 6 days and an additional approximately 40% between days 7 and 14. Conclusions. On the basis of the CASPERs, we were able to track whether households had an emergency preparedness kit, whether they used it during the storms (and what was missing), and if they resupplied their kit in recovery. Public Health Implications. CASPER is a promising tool to measure community preparedness to help state, local, tribal, and territorial jurisdictions plan for disasters or emergencies.
Journal Article
The hundred days
\"Napoleon's return to the throne in Paris, as imagined by the incomparable Joseph Roth. Set during the infamous period between Napoleon's escape from Elba and his second defeat and recapture at Waterloo, The Hundred Days describes the great Emperor's last shot at glory and his final transformation from a godlike ruler into an ordinary, humble man. Roth frames the novel through the perspectives of Napoleon himself as well as his devoted Corsican laundress Angelina, to show the demise of their seemingly intertwined fates. The Hundred Days is enriched with Roth's signature lyrical elegance and haunting atmospheric details\" -- Provided by publisher.
BOOK
Scaling growth rates for perovskite oxide virtual substrates on silicon
The availability of native substrates is a cornerstone in the development of microelectronic technologies relying on epitaxial films. If native substrates are not available, virtual substrates - crystalline buffer layers epitaxially grown on a structurally dissimilar substrate - offer a solution. Realizing commercially viable virtual substrates requires the growth of high-quality films at high growth rates for large-scale production. We report the stoichiometric growth of SrTiO
3
exceeding 600 nm hr
−1
. This tenfold increase in growth rate compared to SrTiO
3
grown on silicon by conventional methods is enabled by a self-regulated growth window accessible in hybrid molecular beam epitaxy. Overcoming the materials integration challenge for complex oxides on silicon using virtual substrates opens a path to develop new electronic devices in the More than Moore era and silicon integrated quantum computation hardware.
A scalable method for the growth of perovskite oxides thin films on silicon is desirable for integration of buffer layers in devices. Here the authors demonstrate the stoichiometric growth of thin SrTiO
3
layers on silicon at high growth rates by hybrid molecular beam epitaxy.
Journal Article
الهروب بلا نهاية : رواية
\"لم أبدع شيئا، لم أؤلف شيئا\" هكذا يكتب يوزف روت في مقدمة روايته، ليؤكد لنا على أنه كان ملاحظا، مدققا، حكاء فهم مبكرا أنه في هذا العالم هارب بلا نهاية. ينجح فرانتس توندا الضابط النمساوي في الهروب من أسر الروس في الحرب العالمية الأولى. أمامه مغامرة مليئة بالمفارقات حيث الثورة البلشفية والحرب الأهلية الروسية، وتنقله بعد ذلك بين عدة مدن مثل موسكو، وباكو، وبرلين، وباريس. كل مدينة فيهم كانت محطة مؤقته يتأهب فيها للمغادرة للهروب بلا نهاية، ليصور أوروبا الهالكة في ذاك الوقت من عين الضائع في العالم.
Addressing Community Needs During the Hurricane Response and Recovery Efforts Through Community Assessments for Public Health Emergency Response (CASPER)—United States Virgin Islands, 2017-2018
Two category 5 storms hit the US Virgin Islands (USVI) within 13 days of each other in September 2017. This caused an almost complete loss of power and devastated critical infrastructure such as the hospitals and airports METHODS: The USVI Department of Health conducted 2 response Community Assessments for Public Health Emergency Response (CASPERs) in November 2017 and a recovery CASPER in February 2018. CASPER is a 2-stage cluster sampling method designed to provide household-based information about a community's needs in a timely, inexpensive, and representative manner.
Almost 70% of homes were damaged or destroyed, 81.2% of homes still needed repair, and 10.4% of respondents felt their home was unsafe to live in approximately 5 months after the storms. Eighteen percent of individual respondents indicated that their mental health was \"not good\" for 14 or more days in the past month, a significant increase from 2016.
The CASPERs helped characterize the status and needs of residents after the devastating hurricanes and illustrate the evolving needs of the community and the progression of the recovery process. CASPER findings were shared with response and recovery partners to promote data-driven recovery efforts, improve the efficiency of the current response and recovery efforts, and strengthen emergency preparedness in USVI. (Disaster Med Public Health Preparedness. 2019;13:53-62).
Journal Article
Disaster-Related Surveillance Among US Virgin Islands (USVI) Shelters During the Hurricanes Irma and Maria Response
Two Category 5 storms, Hurricane Irma and Hurricane Maria, hit the U.S. Virgin Islands (USVI) within 13 days of each other in September 2017. These storms caused catastrophic damage across the territory, including widespread loss of power, destruction of homes, and devastation of critical infrastructure. During large scale disasters such as Hurricanes Irma and Maria, public health surveillance is an important tool to track emerging illnesses and injuries, identify at-risk populations, and assess the effectiveness of response efforts. The USVI Department of Health (DoH) partnered with shelter staff volunteers to monitor the health of the sheltered population and help guide response efforts.
Shelter volunteers collect data on the American Red Cross Aggregate Morbidity Report form that tallies the number of client visits at a shelter's health services every 24 hours. Morbidity data were collected at all 5 shelters on St. Thomas and St. Croix between September and October 2017. This article describes the health surveillance data collected in response to Hurricanes Irma and Maria.
Following Hurricanes Irma and Maria, 1130 health-related client visits were reported, accounting for 1655 reasons for the visits (each client may have more than 1 reason for a single visit). Only 1 shelter reported data daily. Over half of visits (51.2%) were for health care management; 17.7% for acute illnesses, which include respiratory conditions, gastrointestinal symptoms, and pain; 14.6% for exacerbation of chronic disease; 9.8% for mental health; and 6.7% for injury. Shelter volunteers treated many clients within the shelters; however, reporting of the disposition (eg, referred to physician, pharmacist) was often missed (78.1%).
Shelter surveillance is an efficient means of quickly identifying and characterizing health issues and concerns in sheltered populations following disasters, allowing for the development of evidence-based strategies to address identified needs. When incorporated into broader surveillance strategies using multiple data sources, shelter data can enable disaster epidemiologists to paint a more comprehensive picture of community health, thereby planning and responding to health issues both within and outside of shelters. The findings from this report illustrated that managing chronic conditions presented a more notable resource demand than acute injuries and illnesses. Although there remains room for improvement because reporting was inconsistent throughout the response, the capacity of shelter staff to address the health needs of shelter residents and the ability to monitor the health needs in the sheltered population were critical resources for the USVI DoH overwhelmed by the disaster. (Disaster Med Public Health Preparedness. 2019;13:38-43).
Journal Article