Impact of Semiconductor Band Tails and Band Filling on Photovoltaic Efficiency Limits

Kavli Affiliate: Harry A. Atwater | First 5 Authors: Joeson Wong, Stefan T. Omelchenko, Harry A. Atwater, , | Summary: The theoretical maximum efficiency of a solar cell is typically characterized by a detailed balance of optical absorption and emission for a semiconductor in the limit of unity radiative efficiency and an ideal step-function response […]


Continue.. Impact of Semiconductor Band Tails and Band Filling on Photovoltaic Efficiency Limits

Spatiotemporal Imaging of Thickness-Induced Band Bending Junctions

Kavli Affiliate: Harry A. Atwater | First 5 Authors: Joeson Wong, Artur R. Davoyan, Bolin Liao, Andrey Krayev, Kiyoung Jo | Summary: Van der Waals materials exhibit naturally passivated surfaces and can form versatile heterostructures, enabling observation of carrier transport mechanisms not seen in three-dimensional materials. Here we report observation of a "band bending junction", […]


Continue.. Spatiotemporal Imaging of Thickness-Induced Band Bending Junctions

The Atacama Cosmology Telescope: Summary of DR4 and DR5 Data Products and Data Access

Kavli Affiliate: Toshiya Namikawa | First 5 Authors: Maya Mallaby-Kay, Zachary Atkins, Simone Aiola, Stefania Amodeo, Jason E. Austermann | Summary: Two recent large data releases for the Atacama Cosmology Telescope (ACT), called DR4 and DR5, are available for public access. These data include temperature and polarization maps that cover nearly half the sky at […]


Continue.. The Atacama Cosmology Telescope: Summary of DR4 and DR5 Data Products and Data Access

OPTIMADE, an API for exchanging materials data

Kavli Affiliate: Kristin A. Persson | First 5 Authors: Casper W. Andersen, Rickard Armiento, Evgeny Blokhin, Gareth J. Conduit, Shyam Dwaraknath | Summary: The Open Databases Integration for Materials Design (OPTIMADE) consortium has designed a universal application programming interface (API) to make materials databases accessible and interoperable. We outline the first stable release of the […]


Continue.. OPTIMADE, an API for exchanging materials data

The Nancy Grace Roman Space Telescope Coronagraph Instrument (CGI) Technology Demonstration

Kavli Affiliate: Bruce Macintosh | First 5 Authors: N. Jeremy Kasdin, Vanessa P. Bailey, Bertrand Mennesson, Robert T. Zellem, Marie Ygouf | Summary: The Coronagraph Instrument (CGI) on the Nancy Grace Roman Space Telescope will demonstrate the high-contrast technology necessary for visible-light exoplanet imaging and spectroscopy from space via direct imaging of Jupiter-size planets and […]


Continue.. The Nancy Grace Roman Space Telescope Coronagraph Instrument (CGI) Technology Demonstration

Formation of an extended stellar halo around an ultra-faint dwarf galaxy following one of the earliest mergers from galactic building blocks

Kavli Affiliate: Anna Frebel | First 5 Authors: Yuta Tarumi, Naoki Yoshida, Anna Frebel, , | Summary: Ultra-faint dwarf galaxies (UFDs) are promising observable proxies to building blocks of galaxies formed in the early Universe. We study the formation and evolution of UFDs using cosmological hydrodynamic simulations. In particular, we show that a major merger […]


Continue.. Formation of an extended stellar halo around an ultra-faint dwarf galaxy following one of the earliest mergers from galactic building blocks

Dynamical Evolution of Voids with Surrounding Gravitational Tidal Field

Kavli Affiliate: Naoshi Sugiyama | First 5 Authors: Mutsumi Minoguchi, Atsushi J. Nishizawa, Tsutomu T. Takeuchi, Naoshi Sugiyama, | Summary: The void ellipticity distribution today can be well explained by the tidal field. Going a step further from the overall distribution, we investigate individuality on the tidal response of void shape in non-linear dynamical evolution. […]


Continue.. Dynamical Evolution of Voids with Surrounding Gravitational Tidal Field

Scalable Hamiltonian learning for large-scale out-of-equilibrium quantum dynamics

Kavli Affiliate: Eliska Greplova | First 5 Authors: Agnes Valenti, Guliuxin Jin, Julian LĂ©onard, Sebastian D. Huber, Eliska Greplova | Summary: Large-scale quantum devices provide insights beyond the reach of classical simulations. However, for a reliable and verifiable quantum simulation, the building blocks of the quantum device require exquisite benchmarking. This benchmarking of large scale […]


Continue.. Scalable Hamiltonian learning for large-scale out-of-equilibrium quantum dynamics

Fermionization and boundary states in 1+1 dimensions

Kavli Affiliate: Yuji Tachikawa | First 5 Authors: Yoshiki Fukusumi, Yuji Tachikawa, Yunqin Zheng, , | Summary: In the last few years it was realized that every fermionic theory in 1+1 dimensions is a generalized Jordan-Wigner transform of a bosonic theory with a non-anomalous $mathbb{Z}_2$ symmetry. In this note we determine how the boundary states […]


Continue.. Fermionization and boundary states in 1+1 dimensions