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From trainee to trainer: how I’m empowering imaging scientists in Latin America

IF 64.8 1区综合性期刊

Nature Pub Date : 2025-01-22 DOI: 10.1038/d41586-024-04252-x

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Superconductivity in 5.0° twisted bilayer WSe2

IF 50.5 1区综合性期刊

Nature Pub Date : 2025-01-22 DOI: 10.1038/s41586-024-08381-1

Yinjie Guo, Jordan Pack, Joshua Swann, Luke Holtzman, Matthew Cothrine, Kenji Watanabe, Takashi Taniguchi, David G. Mandrus, Katayun Barmak, James Hone, Andrew J. Millis, Abhay Pasupathy, Cory R. Dean

{"title":"Superconductivity in 5.0° twisted bilayer WSe2","authors":"Yinjie Guo, Jordan Pack, Joshua Swann, Luke Holtzman, Matthew Cothrine, Kenji Watanabe, Takashi Taniguchi, David G. Mandrus, Katayun Barmak, James Hone, Andrew J. Millis, Abhay Pasupathy, Cory R. Dean","doi":"10.1038/s41586-024-08381-1","DOIUrl":"10.1038/s41586-024-08381-1","url":null,"abstract":"The discovery of superconductivity in twisted bilayer and trilayer graphene1–5 has generated tremendous interest. The key feature of these systems is an interplay between interlayer coupling and a moiré superlattice that gives rise to low-energy flat bands with strong correlations6. Flat bands can also be induced by moiré patterns in lattice-mismatched and/or twisted heterostructures of other two-dimensional materials, such as transition metal dichalcogenides (TMDs)7,8. Although a wide range of correlated phenomena have indeed been observed in moiré TMDs9–19, robust demonstration of superconductivity has remained absent9. Here we report superconductivity in 5.0° twisted bilayer WSe2 with a maximum critical temperature of 426 mK. The superconducting state appears in a limited region of displacement field and density that is adjacent to a metallic state with a Fermi surface reconstruction believed to arise from AFM order20. A sharp boundary is observed between the superconducting and magnetic phases at low temperature, reminiscent of spin fluctuation-mediated superconductivity21. Our results establish that moiré flat-band superconductivity extends beyond graphene structures. Material properties that are absent in graphene but intrinsic among TMDs, such as a native band gap, large spin–orbit coupling, spin-valley locking and magnetism, offer the possibility of accessing a broader superconducting parameter space than graphene-only structures. We report superconductivity, in a limited region of displacement field and density, in 5.0° twisted bilayer WSe2 with a maximum critical temperature of 426 mK, establishing that moiré flat-band superconductivity extends beyond graphene structures.","PeriodicalId":18787,"journal":{"name":"Nature","volume":"637 8047","pages":"839-845"},"PeriodicalIF":50.5,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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IF 64.8 1区综合性期刊

Nature Pub Date : 2025-01-22 DOI: 10.1038/d41586-025-00154-8

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Field–particle energy transfer during chorus emissions in space

IF 50.5 1区综合性期刊

Nature Pub Date : 2025-01-22 DOI: 10.1038/s41586-024-08402-z

C. M. Liu, B. N. Zhao, J. B. Cao, C. J. Pollock, C. T. Russell, Y. Y. Liu, X. N. Xing, P. A. Linqvist, J. L. Burch

{"title":"Field–particle energy transfer during chorus emissions in space","authors":"C. M. Liu, B. N. Zhao, J. B. Cao, C. J. Pollock, C. T. Russell, Y. Y. Liu, X. N. Xing, P. A. Linqvist, J. L. Burch","doi":"10.1038/s41586-024-08402-z","DOIUrl":"10.1038/s41586-024-08402-z","url":null,"abstract":"Chorus waves are some of the strongest electromagnetic emissions naturally occurring in space and can cause radiation that is hazardous to humans and satellites1–3. Although chorus waves have attracted extreme interest and been intensively studied for decades4–7, their generation and evolution remain highly debated7. Here, in contrast to the conventional expectation that chorus waves are governed by planetary magnetic dipolar fields5,7, we report observations of repetitive, rising-tone chorus waves in the terrestrial neutral sheet, where the effects of the magnetic dipole are absent. Using high-cadence data from NASA’s MMS mission, we present ultrafast measurements of the wave fields and three-dimensional electron distributions within the waves, which provides evidence for chorus–electron interactions and the development of electron holes in the wave phase space. We found that the waves are associated with resonant currents antiparallel to the wave magnetic field, as predicted by nonlinear wave theory. We estimated the nonlinear field–particle energy transfer inside the waves, finding that the waves extract energy from local thermal electrons, in line with the positive growth rate of the waves derived from an instability analysis. Our observations may help to resolve long-standing controversies regarding chorus emissions and in gaining an understanding of the energy transport observed in space and astrophysical environments. Whistler-mode chorus waves have been observed in the tail region of the terrestrial magnetosphere, where the magnetic field is not dipolar so that chorus waves were not expected, and their generation mechanisms have been tested with state-of-the-art observations.","PeriodicalId":18787,"journal":{"name":"Nature","volume":"637 8047","pages":"813-820"},"PeriodicalIF":50.5,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41586-024-08402-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Neuromorphic computing at scale

IF 50.5 1区综合性期刊

Nature Pub Date : 2025-01-22 DOI: 10.1038/s41586-024-08253-8

Dhireesha Kudithipudi, Catherine Schuman, Craig M. Vineyard, Tej Pandit, Cory Merkel, Rajkumar Kubendran, James B. Aimone, Garrick Orchard, Christian Mayr, Ryad Benosman, Joe Hays, Cliff Young, Chiara Bartolozzi, Amitava Majumdar, Suma George Cardwell, Melika Payvand, Sonia Buckley, Shruti Kulkarni, Hector A. Gonzalez, Gert Cauwenberghs, Chetan Singh Thakur, Anand Subramoney, Steve Furber

{"title":"Neuromorphic computing at scale","authors":"Dhireesha Kudithipudi, Catherine Schuman, Craig M. Vineyard, Tej Pandit, Cory Merkel, Rajkumar Kubendran, James B. Aimone, Garrick Orchard, Christian Mayr, Ryad Benosman, Joe Hays, Cliff Young, Chiara Bartolozzi, Amitava Majumdar, Suma George Cardwell, Melika Payvand, Sonia Buckley, Shruti Kulkarni, Hector A. Gonzalez, Gert Cauwenberghs, Chetan Singh Thakur, Anand Subramoney, Steve Furber","doi":"10.1038/s41586-024-08253-8","DOIUrl":"10.1038/s41586-024-08253-8","url":null,"abstract":"Neuromorphic computing is a brain-inspired approach to hardware and algorithm design that efficiently realizes artificial neural networks. Neuromorphic designers apply the principles of biointelligence discovered by neuroscientists to design efficient computational systems, often for applications with size, weight and power constraints. With this research field at a critical juncture, it is crucial to chart the course for the development of future large-scale neuromorphic systems. We describe approaches for creating scalable neuromorphic architectures and identify key features. We discuss potential applications that can benefit from scaling and the main challenges that need to be addressed. Furthermore, we examine a comprehensive ecosystem necessary to sustain growth and the new opportunities that lie ahead when scaling neuromorphic systems. Our work distils ideas from several computing sub-fields, providing guidance to researchers and practitioners of neuromorphic computing who aim to push the frontier forward. Approaches for the development of future at-scale neuromorphic systems based on principles of biointelligence are described, along with potential applications of scalable neuromorphic architectures and the challenges that need to be overcome.","PeriodicalId":18787,"journal":{"name":"Nature","volume":"637 8047","pages":"801-812"},"PeriodicalIF":50.5,"publicationDate":"2025-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142995898","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The new science of menopause: these emerging therapies could change women’s health

IF 50.5 1区综合性期刊

Nature Pub Date : 2025-01-22 DOI: 10.1038/d41586-025-00069-4

Lynne Peeples

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US scientist falsely accused of hiding ties to China sues university that fired him

IF 64.8 1区综合性期刊

Nature Pub Date : 2025-01-22 DOI: 10.1038/d41586-025-00153-9

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A map of parental-DNA exchanges charts course for studies of human evolution

IF 64.8 1区综合性期刊