Topological phonon transport in an optomechanical system

Kavli Affiliate: Oskar Painter | First 5 Authors: Hengjiang Ren, Tirth Shah, Hannes Pfeifer, Christian Brendel, Vittorio Peano | Summary: Recent advances in cavity-optomechanics have now made it possible to use light not just as a passive measuring device of mechanical motion, but also to manipulate the motion of mechanical objects down to the level […]


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Many-body theory of radiative lifetimes of exciton-trion superposition states in doped two-dimensional materials

Kavli Affiliate: Farhan Rana | First 5 Authors: Farhan Rana, Okan Koksal, Minwoo Jung, Gennady Shvets, Christina Manolatou | Summary: Optical absorption and emission spectra of doped two-dimensional (2D) materials exhibit sharp peaks that are often identified with pure excitons and pure trions (or charged excitons), but both peaks have been recently attributed to superpositions […]


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Strain game revisited for complex oxide thin-films: Substrate-film thermal expansion mismatch in PbTiO$_3$

Kavli Affiliate: Nicole A. Benedek | First 5 Authors: Ethan T. Ritz, Nicole A. Benedek, , , | Summary: The sensitivity of materials properties, particularly those of perovskite oxides, to epitaxial strain has been exploited to great advantage to create materials with new or enhanced properties. Although it has certainly been recognized that mismatch in […]


Continue.. Strain game revisited for complex oxide thin-films: Substrate-film thermal expansion mismatch in PbTiO$_3$

Programming nonreciprocity and reversibility in multistable mechanical metamaterials

Kavli Affiliate: Katia Bertoldi | First 5 Authors: Gabriele Librandi, Eleonora Tubaldi, Katia Bertoldi, , | Summary: Nonreciprocity can be passively achieved by harnessing material nonlinearities. In particular, networks of nonlinear bistable elements with asymmetric energy landscapes have recently been shown to support unidirectional transition waves. However, in these systems energy can be transferred only […]


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Tunable intraband optical conductivity and polarization-dependent epsilon-near-zero behavior in black phosphorus

Kavli Affiliate: Harry A. Atwater | First 5 Authors: Souvik Biswas, William S. Whitney, Meir Y. Grajower, Kenji Watanabe, Takashi Taniguchi | Summary: Black phosphorus (BP) offers considerable promise for infrared and visible photonics. Efficient tuning of the bandgap and higher subbands in BP by modulation of the Fermi level or application of vertical electric […]


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Vibronic response of a spin-1/2 state from a carbon impurity in two-dimensional WS$_2$

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Katherine A. Cochrane, Jun-Ho Lee, Christoph Kastl, Jonah B. Haber, Tianyi Zhang | Summary: We demonstrate the creation of a spin-1/2 state via the atomically controlled generation of magnetic carbon radical ions (CRIs) in synthetic two-dimensional transition metal dichalcogenides (TMDs). Hydrogenated carbon impurities located at chalcogen […]


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Multifunctional on-chip storage at telecommunication wavelength for quantum networks

Kavli Affiliate: Andrei Faraon | First 5 Authors: Ioana Craiciu, Mi Lei, Jake Rochman, John G. Bartholomew, Andrei Faraon | Summary: Quantum networks will enable a variety of applications, from secure communication and precision measurements to distributed quantum computing. Storing photonic qubits and controlling their frequency, bandwidth and retrieval time are important functionalities in future […]


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Nanofibril-mediated Fracture Resistance of Bone

Kavli Affiliate: Julia R. Greer | First 5 Authors: Ottman A. Tertuliano, Bryce W. Edwards, Lucas R. Meza, Vikram S. Deshpande, Julia R. Greer | Summary: Natural hard composites like human bone possess a combination of strength and toughness that exceeds that of their constituents and of many engineered composites. This augmentation is attributed to […]


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Efficient calculation of carrier scattering rates from first principles

Kavli Affiliate: Kristin A. Persson | First 5 Authors: Alex M. Ganose, Junsoo Park, Alireza Faghaninia, Rachel Woods-Robinson, Kristin A. Persson | Summary: The electronic transport behaviour of materials determines their suitability for technological applications. We develop an efficient method for calculating carrier scattering rates of solid-state semiconductors and insulators from first principles inputs. The […]


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Small-area Population Forecast in a Segregated City using Density-Functional Fluctuation Theory

Kavli Affiliate: Itai Cohen | First 5 Authors: Yuchao Chen, Yunus A. Kinkhabwala, Boris Barron, Matthew Hall, Tomas A. Arias | Summary: Decisions regarding housing, transportation, and resource allocation would all benefit from accurate small-area population forecasts. While various tried-and-tested forecast methods exist at regional scales, developing an accurate neighborhood-scale forecast remains a challenge partly […]


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