Recent ucri_lfrp_rw items

Electronic structure and topology across Tc in the magnetic Weyl semimetal Co3Sn2S2

Thu, 1 Dec 2022 00:00:00 +0000

Co3Sn2S2 is a magnetic Weyl semimetal, in which ferromagnetic ordering at 177K is predicted to stabilize Weyl points. We perform temperature and spatial dependent angle--resolved photoemission spectroscopy measurements through the Curie temperature (Tc), which show large band shifts and renormalization concomitant with the onset of magnetism. We argue that Co3Sn2S2 evolves from a Mott ferromagnet below Tc to a correlated metallic state above Tc. To understand the magnetism, we derive a tight-binding model of Co-3dx2−y2 orbitals on the kagome lattice. At the filling obtained by first-principles calculations, this model reproduces the ferromagnetic ground state, and results in the reduction of Coulomb interactions due to cluster effects. Using a disordered local moment simulation, we show how this reduced Hubbard-U leads to a collapse of the bands across the magnetic transition, resulting in a correlated state which carries associated characteristic photoemission signatures that...

Megafires in a Warming World: What Wildfire Risk Factors Led to California's Largest Recorded Wildfire

Tue, 1 Nov 2022 00:00:00 +0000

Massive wildfires and extreme fire behavior are becoming more frequent across the western United Statescreating a need to better understand how megafire behavior will evolve in our warming world. Here, the fire spread model Prometheus is used to simulate the initial explosive growth of the 2020 August Complex, which occurred in northern California (CA) mixed conifer forests. High temperatures, low relative humidity, and daytime southerly winds were all highly correlated with extreme rates of modeled spread. Fine fuels reached very dry levels, which accelerated simulation growth and heightened fire heat release (HR). Model sensitivity tests indicate that fire growth and HR are most sensitive to aridity and fuel moisture content. Despite the impressive early observed growth of the fire, shifting the simulation ignition to a very dry September 2020 heatwave predicted a >50% increase in growth and HR, as well as increased nighttime fire activity. Detailed model analyses of how...

Climate change impacts plant carbon balance, increasing mean future carbon use efficiency but decreasing total forest extent at dry range edges

Tue, 1 Nov 2022 00:00:00 +0000

Climate change impacts plant carbon balance, increasing mean future carbon use efficiency but decreasing total forest extent at dry range edges

Inhomogeneous Knight shift in vortex cores of superconducting FeSe

Tue, 1 Nov 2022 00:00:00 +0000

Inhomogeneous Knight shift in vortex cores of superconducting FeSe

Robust antiferromagnetism in Y2Co3

Tue, 1 Nov 2022 00:00:00 +0000

Robust antiferromagnetism in Y2Co3

Comparison of modeled snow properties in Afghanistan, Pakistan, and Tajikistan

Thu, 25 Feb 2021 00:00:00 +0000

Comparison of modeled snow properties in Afghanistan, Pakistan, and Tajikistan

Exploring Abstraction Functions in Fuzzing

Thu, 25 Feb 2021 00:00:00 +0000

Exploring Abstraction Functions in Fuzzing

SPIDER: Enabling Fast Patch Propagation In Related Software Repositories

Thu, 25 Feb 2021 00:00:00 +0000

SPIDER: Enabling Fast Patch Propagation In Related Software Repositories

TRUST.IO: Protecting Physical Interfaces on Cyber-physical Systems

Thu, 25 Feb 2021 00:00:00 +0000

TRUST.IO: Protecting Physical Interfaces on Cyber-physical Systems

An Examination of Snow Albedo Estimates From MODIS and Their Impact on Snow Water Equivalent Reconstruction

Thu, 25 Feb 2021 00:00:00 +0000

An Examination of Snow Albedo Estimates From MODIS and Their Impact on Snow Water Equivalent Reconstruction

KARONTE: Detecting Insecure Multi-binary Interactions in Embedded Firmware

Thu, 25 Feb 2021 00:00:00 +0000

KARONTE: Detecting Insecure Multi-binary Interactions in Embedded Firmware

Lakes and Watersheds of California's Sierra Nevada: Responses to Environmental Change

Thu, 25 Feb 2021 00:00:00 +0000

Lakes and Watersheds of California's Sierra Nevada: Responses to Environmental Change

HALucinator: Firmware Re-hosting through Abstraction Layer Emulation

Thu, 25 Feb 2021 00:00:00 +0000

HALucinator: Firmware Re-hosting through Abstraction Layer Emulation

Characterizing Biases in Mountain Snow Accumulation From Global Data Sets

Thu, 25 Feb 2021 00:00:00 +0000

Characterizing Biases in Mountain Snow Accumulation From Global Data Sets

An Examination of Snow Albedo Estimates From MODIS and Their Impact on Snow Water Equivalent Reconstruction

Thu, 25 Feb 2021 00:00:00 +0000

An Examination of Snow Albedo Estimates From MODIS and Their Impact on Snow Water Equivalent Reconstruction

Quantifying the Spatial Variability of a Snowstorm Using Differential Airborne Lidar

Thu, 4 Feb 2021 00:00:00 +0000

Quantifying the Spatial Variability of a Snowstorm Using Differential Airborne Lidar

Snow Property Inversion From Remote Sensing (SPIReS): A Generalized Multispectral Unmixing Approach With Examples From MODIS and Landsat 8 OLI

Thu, 4 Feb 2021 00:00:00 +0000

Snow Property Inversion From Remote Sensing (SPIReS): A Generalized Multispectral Unmixing Approach With Examples From MODIS and Landsat 8 OLI

Cloud Masking for Landsat 8 and MODIS Terra Over SnowâCovered Terrain: Error Analysis and Spectral Similarity Between Snow and Cloud

Thu, 4 Feb 2021 00:00:00 +0000

Cloud Masking for Landsat 8 and MODIS Terra Over SnowâCovered Terrain: Error Analysis and Spectral Similarity Between Snow and Cloud

Laser driven electron acceleration in nanorod arrays targets

Fri, 20 Nov 2020 00:00:00 +0000

Laser driven electron acceleration in nanorod arrays targets

Laboratory equation of state measurements of the carbon envelopes of white dwarf stars

Wed, 23 Sep 2020 00:00:00 +0000

Laboratory equation of state measurements of the carbon envelopes of white dwarf stars

Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

Thu, 20 Aug 2020 00:00:00 +0000

Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

Silicate Melting and Vaporization During Rocky Planet Formation

Thu, 20 Aug 2020 00:00:00 +0000

Silicate Melting and Vaporization During Rocky Planet Formation

The effects of ultra-fine-grained structure and cryogenic temperature on adiabatic shear localization in titanium

Thu, 20 Aug 2020 00:00:00 +0000

The effects of ultra-fine-grained structure and cryogenic temperature on adiabatic shear localization in titanium

Equation of state of boron nitride combining computation, modeling, and experiment

Thu, 20 Aug 2020 00:00:00 +0000

Equation of state of boron nitride combining computation, modeling, and experiment

Characterizing the ionization potential depression in dense carbon plasmas with high-precision spectrally resolved x-ray scattering

Thu, 20 Aug 2020 00:00:00 +0000

Characterizing the ionization potential depression in dense carbon plasmas with high-precision spectrally resolved x-ray scattering

High-pressure chemistry of hydrocarbons relevant to planetary interiors and inertial confinement fusion

Thu, 20 Aug 2020 00:00:00 +0000

High-pressure chemistry of hydrocarbons relevant to planetary interiors and inertial confinement fusion

Path integral Monte Carlo and density functional molecular dynamics simulations of warm dense MgSiO3

Thu, 20 Aug 2020 00:00:00 +0000

Path integral Monte Carlo and density functional molecular dynamics simulations of warm dense MgSiO3

Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

Thu, 20 Aug 2020 00:00:00 +0000

Transport of kJ-laser-driven relativistic electron beams in cold and shock-heated vitreous carbon and diamond

High-pressure nano-seismology: Use of micro-ring resonators for characterizing acoustic emissions

Thu, 20 Aug 2020 00:00:00 +0000

High-pressure nano-seismology: Use of micro-ring resonators for characterizing acoustic emissions

Magnesium oxide at extreme temperatures and pressures studied with first-principles simulations

Thu, 20 Aug 2020 00:00:00 +0000

Magnesium oxide at extreme temperatures and pressures studied with first-principles simulations

Saturn’s Probable Interior: An Exploration of Saturn’s Potential Interior Density Structures

Thu, 20 Aug 2020 00:00:00 +0000

Saturn’s Probable Interior: An Exploration of Saturn’s Potential Interior Density Structures

Thermal and Pressure Ionization in Warm, Dense MgSiO3 Studied with First-Principles Computer Simulations

Thu, 20 Aug 2020 00:00:00 +0000

Thermal and Pressure Ionization in Warm, Dense MgSiO3 Studied with First-Principles Computer Simulations

Determining the impact of a severe dry to wet transition on watershed hydrodynamics in California, USA with an integrated hydrologic model

Tue, 30 Jun 2020 00:00:00 +0000

With the onset of climate change, regions relied upon for water supply are increasingly subject to end-member fluctuations between periods of severe drought followed by extreme precipitation. The impacts of these extreme conditions on watershed hydrodynamics in water-resource sensitive regions such as California are unknown despite their great importance for resilience and water management purposes. Understanding these impacts requires high-resolution physically based models to capture sharp variations of topography, land use, wetting fronts, etc. An integrated hydrologic model was used in a high-performance computing framework to study the complex nonlinear dynamics occurring at a representative Californian watershed. The Cosumnes Watershed, one of the last major rivers in California without a dam, offers a rare opportunity to isolate the effects of water management from climate extremes. Here, we show model validation with comparisons between model outputs and local measurements...

Canopy Adjustment and Improved Cloud Detection for Remotely Sensed Snow Cover Mapping

Fri, 1 May 2020 00:00:00 +0000

Canopy Adjustment and Improved Cloud Detection for Remotely Sensed Snow Cover Mapping

Cloud Masking for Landsat 8 and MODIS Terra Over Snowâ��Covered Terrain: Error Analysis and Spectral Similarity Between Snow and Cloud

Fri, 1 May 2020 00:00:00 +0000

Cloud Masking for Landsat 8 and MODIS Terra Over Snowâ��Covered Terrain: Error Analysis and Spectral Similarity Between Snow and Cloud

Remote Sensing-Based Assessment of the Crop, Energy and Water Nexus in the Central Valley, California

Fri, 1 May 2020 00:00:00 +0000

Remote Sensing-Based Assessment of the Crop, Energy and Water Nexus in the Central Valley, California

Cloud-Assisted On-Sensor Observation Classification in Latency-Impeded IoT Systems

Wed, 29 Jan 2020 00:00:00 +0000

Cloud-Assisted On-Sensor Observation Classification in Latency-Impeded IoT Systems

Timely-Throughput Optimal Coded Computing over Cloud Networks

Wed, 29 Jan 2020 00:00:00 +0000

Timely-Throughput Optimal Coded Computing over Cloud Networks

Analysis of Cyber Attacks Against Micro-PMUs: The Case of Event Source Location Identification

Wed, 29 Jan 2020 00:00:00 +0000

Analysis of Cyber Attacks Against Micro-PMUs: The Case of Event Source Location Identification

Anomaly Detection in IoT-Based PIR Occupancy Sensors to Improve Building Energy Efficiency

Wed, 29 Jan 2020 00:00:00 +0000

Anomaly Detection in IoT-Based PIR Occupancy Sensors to Improve Building Energy Efficiency

A risk-security tradeoff in graphical coordination games

Wed, 29 Jan 2020 00:00:00 +0000

A risk-security tradeoff in graphical coordination games

Situational Awareness in Distribution Grid Using Micro-PMU Data: A Machine Learning Approach

Wed, 29 Jan 2020 00:00:00 +0000

Situational Awareness in Distribution Grid Using Micro-PMU Data: A Machine Learning Approach

Unsupervised Learning for Online AbnormalityDetection in Smart Meter Data

Wed, 29 Jan 2020 00:00:00 +0000

Unsupervised Learning for Online AbnormalityDetection in Smart Meter Data

Robust and Communication-Efficient Collaborative Learning

Wed, 29 Jan 2020 00:00:00 +0000

Robust and Communication-Efficient Collaborative Learning

Characterizing the interplay between information and strength in Blotto games

Wed, 29 Jan 2020 00:00:00 +0000

Characterizing the interplay between information and strength in Blotto games

Resilient Distributed Optimization Algorithms for Resource Allocation

Wed, 29 Jan 2020 00:00:00 +0000

Resilient Distributed Optimization Algorithms for Resource Allocation

Sparsity-based Defense against Adversarial Attacks on Linear Classifiers

Wed, 29 Jan 2020 00:00:00 +0000

Sparsity-based Defense against Adversarial Attacks on Linear Classifiers

Centralized Versus Decentralized Detection of Attacks in Stochastic Interconnected Systems

Wed, 29 Jan 2020 00:00:00 +0000

Centralized Versus Decentralized Detection of Attacks in Stochastic Interconnected Systems

Sparse Distribution System State Estimation:An Approximate Solution Against Low Observability

Wed, 29 Jan 2020 00:00:00 +0000

Sparse Distribution System State Estimation:An Approximate Solution Against Low Observability

Individual Load Model Parameter Estimation in Distribution Systems Using Load Switching Events

Wed, 29 Jan 2020 00:00:00 +0000

Individual Load Model Parameter Estimation in Distribution Systems Using Load Switching Events

Secure High DER Penetration Power Distribution Via Autonomously Coordinated Volt/VAR Control

Wed, 29 Jan 2020 00:00:00 +0000

Secure High DER Penetration Power Distribution Via Autonomously Coordinated Volt/VAR Control

An Exact Quantized Decentralized Gradient Descent Algorithm

Wed, 29 Jan 2020 00:00:00 +0000

An Exact Quantized Decentralized Gradient Descent Algorithm

Collective topo-epitaxy in the self-assembly of a 3D quantum dot superlattice

Fri, 10 Jan 2020 00:00:00 +0000

Collective topo-epitaxy in the self-assembly of a 3D quantum dot superlattice

Low-frequency electronic noise in superlattice and random-packed thin films of colloidal quantum dots

Fri, 10 Jan 2020 00:00:00 +0000

Low-frequency electronic noise in superlattice and random-packed thin films of colloidal quantum dots

Charge-Transport Mechanisms in CuInSe _x S _{2â��
x} Quantum-Dot Films

Fri, 10 Jan 2020 00:00:00 +0000

Charge-Transport Mechanisms in CuInSe _x S _{2â��
x} Quantum-Dot Films

Dynamic deformability of individual PbSe nanocrystals during superlattice phase transitions

Fri, 10 Jan 2020 00:00:00 +0000

Dynamic deformability of individual PbSe nanocrystals during superlattice phase transitions

Liquid-like and rigid-body motions in molecular-dynamics simulations of a crystalline protein

Fri, 13 Dec 2019 00:00:00 +0000

Liquid-like and rigid-body motions in molecular-dynamics simulations of a crystalline protein

Low-Frequency Current Fluctuations and Sliding of the Charge Density Waves in Two-Dimensional Materials