Bulletin of the American Physical Society最新文献_第5页

Bulletin of the American Physical Society Pub Date : 2020-03-03 DOI: 10.1093/acrefore/9780190871994.013.48

S. Sachdev

引用次数: 4

Patterning-induced ferromagnetism of Fe 3 GeTe 2 van der Waals materials beyond room temperature 超室温范德瓦尔斯材料 Fe 3 GeTe 2 的图案诱导铁磁性

Bulletin of the American Physical Society Pub Date : 2020-03-03 DOI: 10.1021/acs.nanolett.8b02806.s001

Mengmeng Yang, Qian Li, Cheng Gong, R. Chopdekar, A. N’Diaye, John A. Turner, Gong Chen, A. Scholl, P. Shafer, E. Arenholz, Andreas K. Schmid, Sheng Wang, Kai Liu, N. Gao, Alemayehu S. Admasu, Sang-Wook Cheong, Chanyong Hwang, Jia Li, Feng Wang, Xiang Zhang, Z. Qiu

引用次数: 13

Minimum Flow Rate in Electro-Coflow 电共流中的最小流量

Bulletin of the American Physical Society Pub Date : 2020-03-03 DOI: 10.21633/ISSN.2380.5064/S.2020.03.02.31

Benjamin Overlie, Josefa Guerrero Millan

{"title":"Minimum Flow Rate in Electro-Coflow","authors":"Benjamin Overlie, Josefa Guerrero Millan","doi":"10.21633/ISSN.2380.5064/S.2020.03.02.31","DOIUrl":"https://doi.org/10.21633/ISSN.2380.5064/S.2020.03.02.31","url":null,"abstract":"Controlled generation of micron and sub-micron sized drops continues to be of strong interest for the scientific community due to the variety of applications in many different fields. Emulsion drops can be generated by flowing two immiscible liquids inside a glassbased microfluidic device. Their minimum size will be of the order of the tip size. To create smaller drops, an external electric field can be used, similarly to what it is done in the classical electrospray. In electrospray, a liquid is issued into the air from an electrified needle. When the flow rate of the liquid is controlled, there is a minimum flow rate below which a cone-jet cannot be formed regardless of the applied voltage. This minimum flow rate provides the minimum drop size that can be generated, usually one or two orders of magnitude smaller than the tip size. In this presentation, we explore this lower limit in electro-coflow using pressure control instead, which generates different results from using electrospray, and with a more complex behavior. The use of pressure control, and the presence of an outer moving fluid, enrich the dynamics in the minimum flow rate limit. Received: 01/31/2020 Accepted: 02/17/2020 Correspondence: Benjamin Overlie, Augusta University, 1120 15 St. Augusta, GA 30912, boverlie@augusta.edu","PeriodicalId":9375,"journal":{"name":"Bulletin of the American Physical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86883424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dynamics and topology of non-Hermitian elastic lattices with non-local feedback interactions 具有非局部反馈相互作用的非厄米弹性格的动力学和拓扑

Bulletin of the American Physical Society Pub Date : 2020-03-03 DOI: 10.26226/morressier.5f5f8e69aa777f8ba5bd6144

M. Rosa, M. Ruzzene

引用次数: 1

Screening and Design of Novel 2D Ferromagnetic Materials with High Curie Temperature above Room Temperature 室温以上高居里温度新型二维铁磁材料的筛选与设计

Bulletin of the American Physical Society Pub Date : 2020-03-03 DOI: 10.1021/acsami.8b14037.s001

Zhou Jiang, Peng Wang, Xue Jiang, Jijun Zhao

引用次数: 2

Uncertainty quantification of classical interatomic potentials in OpenKIM database OpenKIM数据库中经典原子间势的不确定度定量

Bulletin of the American Physical Society Pub Date : 2020-03-03 DOI: 10.26226/morressier.5f5f8e69aa777f8ba5bd6040

Yonatan Kurniawan, Cody Petrie, Kinamo J. Williams, M. Transtrum

引用次数: 1

Spin shuttling in a silicon double quantum dot 硅双量子点中的自旋穿梭

Bulletin of the American Physical Society Pub Date : 2020-03-03 DOI: 10.1103/PHYSREVB.102.195418

Florian Ginzel, A. Mills, J. Petta, G. Burkard

{"title":"Spin shuttling in a silicon double quantum dot","authors":"Florian Ginzel, A. Mills, J. Petta, G. Burkard","doi":"10.1103/PHYSREVB.102.195418","DOIUrl":"https://doi.org/10.1103/PHYSREVB.102.195418","url":null,"abstract":"The transport of quantum information between different nodes of a quantum device is among the challenging functionalities of a quantum processor. In the context of spin qubits, this requirement can be met by coherent electron spin shuttling between semiconductor quantum dots. Here we theoretically study a minimal version of spin shuttling between two quantum dots. To this end, we analyze the dynamics of an electron during a detuning sweep in a silicon double quantum dot (DQD) occupied by one electron. Possibilities and limitations of spin transport are investigated. Spin-orbit interaction and the Zeeman effect in an inhomogeneous magnetic field play an important role for spin shuttling and are included in our model. Interactions that couple the position, spin, and valley degrees of freedom open a number of avoided crossings in the spectrum allowing for diabatic transitions and interfering paths. The outcomes of single and repeated spin shuttling protocols are explored by means of numerical simulations and an approximate analytical model based on the solution of the Landau-Zener problem. We find that a spin infidelity as low as $1ensuremath{-}{F}_{s}ensuremath{lesssim}0.002$ with a relatively fast level velocity of $ensuremath{alpha}=600phantom{rule{0.16em}{0ex}}ensuremath{mu}{mathrm{eV}phantom{rule{0.16em}{0ex}}mathrm{ns}}^{ensuremath{-}1}$ is feasible for optimal choices of parameters or by making use of constructive interference.","PeriodicalId":9375,"journal":{"name":"Bulletin of the American Physical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84258745","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 19

Topological insulator interfaced with ferromagnetic insulators: Bi2Te3 thin films on magnetite and iron garnets 拓扑绝缘体与铁磁绝缘体的界面:Bi2Te3薄膜在磁铁矿和铁石榴石上

Bulletin of the American Physical Society Pub Date : 2020-03-02 DOI: 10.1103/physrevmaterials.4.064202

C. N. Wu, V. M. Pereira, S. Altendorf, S. Liao, Cheng-En Liu, A. Komarek, M. Guo, Hong‐ji Lin, C. Chen, M. Hong, J. Kwo, L. Tjeng

引用次数: 15

Nonlocal density embedding theory 非局部密度嵌入理论

Bulletin of the American Physical Society Pub Date : 2020-03-02 DOI: 10.1021/scimeetings.0c06951

Wenhui Mi, M. Pavanello

引用次数: 0

Circular electromechanical resonators based on hexagonal-boron nitride-graphene heterostructures 基于六方氮化硼-石墨烯异质结构的圆形机电谐振器

Bulletin of the American Physical Society Pub Date : 2020-03-02 DOI: 10.1063/5.0024583

Rohit Kumar, D. Session, R. Tsuchikawa, Mario Homer, Harrison Paas, Kenji Watanabe, T. Taniguchi, V. Deshpande

{"title":"Circular electromechanical resonators based on hexagonal-boron nitride-graphene heterostructures","authors":"Rohit Kumar, D. Session, R. Tsuchikawa, Mario Homer, Harrison Paas, Kenji Watanabe, T. Taniguchi, V. Deshpande","doi":"10.1063/5.0024583","DOIUrl":"https://doi.org/10.1063/5.0024583","url":null,"abstract":"2D materials such as graphene and hexagonal-boron nitride (h-BN), to name a few, when layered on top of each other offer a class of metamaterials with interesting properties. For example, the twisting degree of freedom between two layers has started the field of twistronics. The exceptional attributes of 2D materials like ultra-low mass, robustness, and high tunability make them very suitable for nanoelectromechanical systems (NEMS). Yet the mechanical properties of these heterostructures in the form of NEMS have not been studied extensively. Such 2D NEMS hold promise for various technological applications, namely, ultrafast sensors, actuators, etc. We report fabrication and characterization of h-BN graphene heterostructure-based circular nanoelectromechanical resonators on sapphire substrates. The devices are measured at cryogenic temperatures and exhibit multiple mode frequencies, which are highly tunable with gate voltage. A continuum mechanics model is employed to analyze the transmission (S21) data of the fundamental mode. Parameters like built-in tension obtained from the fit are used to identify the indices (m, n) of higher mechanical modes observed for the device, providing further device characterization. Such 2D NEMS could offer a way to study diverse electronic phenomena such as superconductivity in twisted bilayer graphene (tBLG) heterostructures.","PeriodicalId":9375,"journal":{"name":"Bulletin of the American Physical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79229357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9