Nanoscience – Page 138 – Kavli Institute Pre-Print Publications

Investigation of Cryogenic Current-Voltage Anomalies in SiGe HBTs: Role of Base-Emitter Junction Inhomogeneities

Posted by dbos February 28, 2023Caltech

Kavli Affiliate: Austin J. Minnich | First 5 Authors: Nachiket R. Naik, Bekari Gabritchidze, Jacob Kooi, Kieran A. Cleary, Austin J. Minnich | Summary: The anomalous current-voltage characteristics of cryogenic SiGe heterojunction bipolar transistors (HBTs) have been a topic of investigation for many years. Proposed explanations include quasiballistic transport of electrons across the base or […]

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Investigation of Cryogenic Current-Voltage Anomalies in SiGe HBTs: Role of Base-Emitter Junction Inhomogeneities

Posted by dbos February 28, 2023Caltech

Kavli Affiliate: Austin J. Minnich | First 5 Authors: Nachiket R. Naik, Bekari Gabritchidze, Justin H. Chen, Jacob Kooi, Kieran A. Cleary | Summary: The deviations of cryogenic collector current-voltage characteristics of SiGe heterojunction bipolar transistors (HBTs) from ideal drift-diffusion theory have been a topic of investigation for many years. Recent work indicates that direct […]

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A Fiber-coupled Scanning Magnetometer with Nitrogen-Vacancy Spins in a Diamond Nanobeam

Posted by dbos February 24, 2023Delft

Kavli Affiliate: Toeno Van Der Sar | First 5 Authors: Yufan Li, Fabian A. Gerritsma, Samer Kurdi, Nina Codreanu, Simon Gröblacher | Summary: Magnetic imaging with nitrogen-vacancy (NV) spins in diamond is becoming an established tool for studying nanoscale physics in condensed matter systems. However, the optical access required for NV spin readout remains an […]

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A Fiber-coupled Scanning Magnetometer with Nitrogen-Vacancy Spins in a Diamond Nanobeam

Posted by dbos February 24, 2023Delft

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Employing High-temperature-grown SrZrO$_3$ Buffer to Enhance the Electron Mobility in La:BaSnO$_3$-based Heterostructures

Posted by dbos February 23, 2023Cornell

Kavli Affiliate: Darrell G. Schlom | First 5 Authors: Prosper Ngabonziza, Jisung Park, Wilfried Sigle, Peter A. van Aken, Jochen Mannhart | Summary: We report a synthetic route to achieve high electron mobility at room temperature in epitaxial La:BaSnO$_3$/SrZrO$_3$ heterostructures prepared on several oxide substrates. Room-temperature mobilities of 157, 145, and 143 cm$^2$V$^{-1}$s$^{-1}$ are achieved […]

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A composite electrodynamic mechanism to reconcile spatiotemporally resolved exciton transport in quantum dot superlattices

Posted by klaurent February 21, 2023Berkeley

Kavli Affiliate: Paul Alivisatos | First 5 Authors: Rongfeng Yuan, Trevor D. Roberts, Rafaela M. Brinn, Alexander A. Choi, Ha H. Park | Summary: Quantum dot (QD) solids are promising optoelectronic materials; further advancing their device functionality depends on understanding their energy transport mechanisms. The commonly invoked near-field F"orster resonance energy transfer (FRET) theory often […]

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A composite electrodynamic mechanism to reconcile spatiotemporally resolved exciton transport in quantum dot superlattices

Posted by dbos February 21, 2023Berkeley

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Molecular design method based on novel molecular representation and variational auto-encoder

Posted by February 20, 2023Caltech

Kavli Affiliate: Wei Gao | First 5 Authors: Li Kai, Li Ning, Zhang Wei, Gao Ming, | Summary: Based on the traditional VAE, a novel neural network model is presented, with the latest molecular representation, SELFIES, to improve the effect of generating new molecules. In this model, multi-layer convolutional network and Fisher information are added […]

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Molecular design method based on novel molecular representation and variational auto-encoder

Posted by February 20, 2023Caltech

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A quantum-classical co-processing protocol towards simulating nuclear reactions on contemporary quantum hardware

Posted by klaurent February 13, 2023Berkeley

Kavli Affiliate: Irfan Siddiqi | First 5 Authors: Francesco Turro, Trevor Chistolini, Akel Hashim, Yosep Kim, William Livingston | Summary: Quantum computers hold great promise for arriving at exact simulations of nuclear dynamical processes (e.g., scattering and reactions) that are paramount to the study of nuclear matter at the limit of stability and to explaining […]

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