Epitaxial lattice-matched Al$_{0.89}$Sc$_{0.11}$N/GaN distributed Bragg reflectors

Posted by dbos Cornell

Kavli Affiliate: Grace Xing | First 5 Authors: Len van Deurzen, Thai-Son Nguyen, Joseph Casamento, Huili Grace Xing, Debdeep Jena | Summary: We demonstrate epitaxial lattice-matched Al$_{0.89}$Sc$_{0.11}$N/GaN ten and twenty period distributed Bragg reflectors (DBRs) grown on c-plane bulk n-type GaN substrates by plasma-enhanced molecular beam epitaxy (PA-MBE). Resulting from a rapid increase of in-plane […]


Continue.. Epitaxial lattice-matched Al$_{0.89}$Sc$_{0.11}$N/GaN distributed Bragg reflectors

Magnetism and magnetocaloric properties of Co$_{1-x}$Mn$_x$Cr$_2$O$_4$

Posted by klaurent Berkeley

Kavli Affiliate: Kristin A. Persson | First 5 Authors: Joya A. Cooley, Gregor Dairaghi, Guy C. Moore, Matthew K. Horton, Emily C. Schueller | Summary: Co$_{1-x}$Mn$_x$Cr$_2$O$_4$ crystallizes as a normal spinel in the cubic $Fd overline{3}m$ space group, and the end members have been reported to display a region of collinear ferrimagnetism as well as […]


Continue.. Magnetism and magnetocaloric properties of Co$_{1-x}$Mn$_x$Cr$_2$O$_4$

Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector Arrays

Posted by klaurent Caltech

Kavli Affiliate: James Bock | First 5 Authors: Grigory Heaton, Walter Cook, James Bock, Jill Burnham, Sam Condon | Summary: Intensity mapping observations measure galaxy clustering fluctuations from spectral-spatial maps, requiring stable noise properties on large angular scales. We have developed specialized readouts and analysis methods for achieving large-scale noise stability with Teledyne 2048$times$2048 H2RG […]


Continue.. Noise Reduction Methods for Large-scale Intensity-mapping Measurements with Infrared Detector Arrays

Developing integrated rate laws of complex self-assembly reactions using Lie symmetry: Kinetics of Abeta42, Abeta40 and Abeta38 co-aggregation

Posted by klaurent Harvard

Kavli Affiliate: L. Mahadevan | First 5 Authors: Alexander J. Dear, Georg Meisl, Sara Linse, L. Mahadevan, | Summary: The development of solutions to the kinetics of homomolecular self-assembly into amyloid fibrils using fixed-point methods, and their subsequent application to the analysis of in vitro kinetic experiments, has led to numerous advances in our understanding […]


Continue.. Developing integrated rate laws of complex self-assembly reactions using Lie symmetry: Kinetics of Abeta42, Abeta40 and Abeta38 co-aggregation

Kitaev chain in an alternating quantum dot-Andreev bound state array

Posted by klaurent Delft

Kavli Affiliate: Michael Wimmer | First 5 Authors: Sebastian Miles, David van Driel, Michael Wimmer, Chun-Xiao Liu, | Summary: We propose to implement a Kitaev chain based on an array of alternating normal and superconductor hybrid quantum dots embedded in semiconductors. In particular, the orbitals in the dot and the Andreev bound states in the […]


Continue.. Kitaev chain in an alternating quantum dot-Andreev bound state array

Kitaev chain in an alternating quantum dot-Andreev bound state array

Posted by dbos Delft

Kavli Affiliate: Michael Wimmer | First 5 Authors: Sebastian Miles, David van Driel, Michael Wimmer, Chun-Xiao Liu, | Summary: We propose to implement a Kitaev chain based on an array of alternating normal and superconductor hybrid quantum dots embedded in semiconductors. In particular, the orbitals in the dot and the Andreev bound states in the […]


Continue.. Kitaev chain in an alternating quantum dot-Andreev bound state array

Perfect Coulomb drag and exciton transport in an excitonic insulator

Posted by klaurent Berkeley

Kavli Affiliate: Feng Wang | First 5 Authors: Ruishi Qi, Andrew Y. Joe, Zuocheng Zhang, Jingxu Xie, Qixin Feng | Summary: Strongly coupled two-dimensional electron-hole bilayers can give rise to novel quantum Bosonic states: electrons and holes in electrically isolated layers can pair into interlayer excitons, which can form a Bose-Einstein condensate below a critical […]


Continue.. Perfect Coulomb drag and exciton transport in an excitonic insulator

Perfect Coulomb drag in a dipolar excitonic insulator

Posted by klaurent Cornell

Kavli Affiliate: Jie Shan | First 5 Authors: Phuong X. Nguyen, Liguo Ma, Raghav Chaturvedi, Kenji Watanabe, Takashi Taniguchi | Summary: Excitonic insulators (EIs), arising in semiconductors when the electron-hole binding energy exceeds the band gap, are a solid-state prototype for bosonic phases of matter. Unlike the charged excitations that are frozen and unable to […]


Continue.. Perfect Coulomb drag in a dipolar excitonic insulator

Multiferroic Magnon Spin-Torque Based Reconfigurable Logic-In-Memory

Posted by klaurent Cornell

Kavli Affiliate: Daniel C. Ralph | First 5 Authors: Yahong Chai, Yuhan Liang, Cancheng Xiao, Yue Wang, Bo Li | Summary: Magnons, bosonic quasiparticles carrying angular momentum, can flow through insulators for information transmission with minimal power dissipation. However, it remains challenging to develop a magnon-based logic due to the lack of efficient electrical manipulation […]


Continue.. Multiferroic Magnon Spin-Torque Based Reconfigurable Logic-In-Memory

Geometric frustration of hard-disk packings on cones

Posted by klaurent Harvard

Kavli Affiliate: Vinothan N. Manoharan | First 5 Authors: Jessica H. Sun, Abigail Plummer, Grace H. Zhang, David R. Nelson, Vinothan N. Manoharan | Summary: Conical surfaces pose an interesting challenge to crystal growth: a crystal growing on a cone can wrap around and meet itself at different radii. We use a disk-packing algorithm to […]


Continue.. Geometric frustration of hard-disk packings on cones