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Displaying 6351 - 6375 of 74303

Electron-electron interactions in low-dimensional Si:P delta layers

June 15, 2020
Author(s)
Joseph Hagmann, Xiqiao Wang, Ranjit Kashid, Pradeep Namboodiri, Jonathan Wyrick, Scott W. Schmucker, Michael Stewart, Richard M. Silver, Curt A. Richter
Key to producing quantum computing devices based on the atomistic placement of dopants in silicon by scanning tunneling microscope (STM) lithography is the formation of embedded highly doped Si:P delta layers (δ-layers). This study investigates the

Manipulation of Coupling and Magnon Transport in Magnetic Metal-Insulator Hybrid Structures

June 15, 2020
Author(s)
Yabin Fan, Patrick Quarterman, Joseph Finley, Jiahao Han, Pengxiang Zhang, Justin T. Hou, Mark D. Stiles, Alexander Grutter, Luqiao Liu
Ferromagnetic metals and insulators are widely used for generation, control and detection of magnon spin signals. Most magnonic structures are based primarily on either magnetic insulators or ferromagnetic metals, while heterostructures integrating both of

Modern reassessment of the Citicorp Building design wind loads

June 15, 2020
Author(s)
Dat Duthinh
Following structural engineering practice of the 1970s, engineers designed the Citicorp Building for the action of wind in each of the structure’s principal axes. One problem they faced was how to determine design values by combining simultaneous wind

Quantum-enhanced interferometry with large heralded photon-number states

June 14, 2020
Author(s)
G Thekkadath, M.E. Mycroft, B.A. Bell, C.G. Wade, A. Eckstein, David Phillips, R.B Patel, A. Buraczewski, Adriana Lita, Thomas Gerrits, Sae Woo Nam, M. Stobinska, A.I. Lvovsky, Ian Walmsley
Quantum phenomena such as entanglement can improve fundamental limits on the sensitivity of a measurement probe. In optical interferometry, a probe consisting of N entangled photons provides up to a sqrt(N) enhancement in phase sensitivity compared to a

Structural, Magnetic, and Electronic Evolution of the Spin-Ladder System BaFe 2 S 3-x Se x with Isoelectronic Substitution

June 12, 2020
Author(s)
Jia Yu, Meng Wang, Benjamin A. Frandsen, Hualei Sun, Junjie Yin, Zengjia Liu, Shan Wu, Ming Yi, Zhijun Xu, Arani Acharya, Qingzhen Huang, Edith Bourret-Courchesne, Jeffrey W. Lynn, Robert J. Birgeneau
We report experimental studies of a series of BaFe 2S 3-xSe x (0less than or equal to}xless than or equal to}3) single crystals and powder specimens using x-ray diffraction, neutron diffraction, muon spin relaxation, and electrical transport measurements

Theory of Discrete Event Logistics Systems (DELS) Specification

June 12, 2020
Author(s)
Timothy A. Sprock, George Thiers, Leon F. McGinnis, Conrad E. Bock
System models and model-based engineering methods have the promise of transforming the way that industrial engineers interact with production and logistics systems. Model-based methods play a role in improving communication between stakeholders

Blind Calibration of Phase Drift in Millimeter-Wave Channel Sounders

June 11, 2020
Author(s)
Jack Chuang, Jelena Senic, Chunmei Liu, Camillo Gentile, Sung Yun Jun, Derek Caudill
Millimeter-wave channel sounders are much more sensitive to phase drift than their microwave counterparts by virtue of shorter wavelength. This matters when coherently phasing (electronic or mechanical) antenna scans collected over seconds, minutes, or

Ferromagnetism in van der Waals Compound MnSb 1.8 Bi 0.2 Te 4

June 11, 2020
Author(s)
Yangyang Chen, Ya-Wen Chuang, Seng Huat Lee, Yanglin Zhu, Kevin Honz, Yingdong Guan, Yu Wang, Ke Wang, Zhiqiang Mao, Jun Zhu, Colin A. Heikes, Patrick Quarterman, P. Zajdel, Julie Borchers, William D. Ratcliff
The intersection of topology and magnetism represent a new playground to discover novel quantum phenomena and new device concepts. In this work, we show that a van der Waals compound MnSb 1.8 Bi 0.2Te 4 exhibits a ferromagnetic ground state with a Curie

Topological Singularity Induced Chiral Kohn Anomaly in a Weyl Semimetal

June 11, 2020
Author(s)
Thanh Nguyen, Fei Han, Nina Andrejevic, Ricardo Pablo-Pedro, Anju Apte, Yoichiro Tsurimaki, Zhiwei Ding, Kunyan Zhang, Ahmet Alatas, Ercan E. Alp, Songxue Chi, Jaime Fernandez-Baca, Masaaki Matsuda, David Alan Tennant, Yang Zhao, Zhijun Xu, Jeffrey W. Lynn, Shengxi Huang, Mingda Li
The electron-phonon interaction (EPI) is instrumental in a wide variety of phenomena in solid state physics, such as electrical resistivity in metals [1], carrier mobility, optical transition and polaron effects in semiconductors [2,3], lifetime of hot

EXPPO: EXecution Performance Profiling and Optimization for CPS Co-simulation-as-a-Service

June 10, 2020
Author(s)
Yogesh Barve, Himanshu Neema, Zhuangwei Kang, Hongyang Sun, Aniruddha Gokhale, Thomas Roth
A co-simulation may comprise several heterogeneous federates with diverse spatial and temporal execution characteristics. In an iterative time-stepped simulation, a federation exhibits the Bulk Synchronous Parallel (BSP) computation paradigm in which all

Rainbow Band Separation is Better than we Thought

June 10, 2020
Author(s)
Daniel Smith-Tone, Ray Perlner
Currently the National Institute of Standards and Technology (NIST) is engaged in a post- quantum standardization effort, analyzing numerous candidate schemes to provide security against the advancing threat of quantum computers. Among the candidates in

Status of IEEE RAS Standardization Efforts

June 10, 2020
Author(s)
Craig I. Schlenoff
The IEEE Robotics and Automation Society's (RAS) standards study and working groups are strong and growing stronger. As of the time of this publication, we have two published standards, six working groups actively developing future standards, and one study

Global City Teams Challenge Smart Agriculture and Rural SuperCluster Workshop Report 2020

June 9, 2020
Author(s)
Sokwoo Rhee, Dennis Buckmaster, Jean Rice, Josh Seidemann, Mo Shakouri, Robert Tse, Hongwei Zhang
The National Institute of Standards and Technology (NIST) established the Global City Teams Challenge (GCTC) for communities across the world to use as collaboration platform in their pursuit of deploying Internet of Things (IoT) and Cyber-Physical Systems

Materials loss measurements using superconducting microwave resonators

June 9, 2020
Author(s)
Corey Rae H. McRae, Haozhi Wang, Jiansong Gao, Michael R. Vissers, Teresa Brecht, A Dunsworth, David P. Pappas, J. Mutus
The performance of superconducting circuits for quantum computing is limited by materials losses. In particular, coherence times are typically bounded by two-level system (TLS) losses at single photon powers and millikelvin temperatures. The identification

Realization of a stroboscopic optical lattice for cold atoms with subwavelength spacing

June 9, 2020
Author(s)
TC Tsui, Yang Wang, Sarthak Subhankar, James V. Porto, Steve Rolston
Optical lattices are typically created via the ac-Stark shift, which are limited by diffraction to periodicities ≥ λ/2, where λ is the wavelength of light used to create them. Lattices with smaller periodicities may be useful for many-body physics with
Displaying 6351 - 6375 of 74303