Wafer-scale magnesium diboride thin films and devices with tunable high kinetic inductance

Posted by Caltech

Kavli Affiliate: Nathan Lewis | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: Progress in superconducting device and detector technologies over the past decade have realized practical applications in quantum computers, detectors for far-IR telescopes, and optical communications. Superconducting thin film materials, however, have remained largely unchanged, with aluminum still being the material […]


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Growth of ultrawide-bandgap BN/diamond heterostructures by pulsed laser deposition

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Xiang Zhang | First 5 Authors: Abhijit Biswas, Gustavo A. Alvarez, Tao Li, Joyce Christiansen-Salameh, Eugene Jeong | Summary: Heterostructures based on ultrawide-bandgap (UWBG) semiconductors (bandgap >4.0 eV), boron nitride (BN) and diamond are important for next-generation high-power electronics. However, in-situ hetero-epitaxy of BN/diamond or vice-versa remains extremely challenging, due to their non-trivial […]


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Transferable screened range-separated hybrid functionals for electronic and optical properties of van der Waals materials

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: María Camarasa-Gómez, Ashwin Ramasubramaniam, Jeffrey B. Neaton, Leeor Kronik | Summary: The accurate description of electronic properties and optical absorption spectra is a long-standing challenge for density functional theory. Recently, the introduction of screened range-separated hybrid (SRSH) functionals for solid-state materials has allowed for the calculation […]


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Incomplete inverse problem for Dirac operator with constant delay

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Feng Wang | First 5 Authors: Feng Wang, Chuan-Fu Yang | Summary: In this work, we consider Dirac-type operators with a constant delay less than two-fifths of the interval and not less than one-third of the interval. For our considered Dirac-type operators, an incomplete inverse spectral problem is studied. Specifically, when two complex […]


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Inverse problems for Dirac operators with a constant delay less than half of the interval

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Feng Wang | First 5 Authors: Feng Wang, Chuan-Fu Yang | Summary: In this work, we consider Dirac-type operators with a constant delay less than half of the interval and not less than two fifths of the interval. For our considered Dirac-type operators, an inverse spectral problem is studied. Specifically, reconstruction of two […]


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Supercurrent mediated by helical edge modes in bilayer graphene

Posted by klaurent Delft, This Week: Nanoscience

Kavli Affiliate: Srijit Goswami | First 5 Authors: Prasanna Rout, Nikos Papadopoulos, Fernando Peñaranda, Kenji Watanabe, Takashi Taniguchi | Summary: Bilayer graphene encapsulated in tungsten diselenide can host a weak topological phase with pairs of helical edge states. The electrical tunability of this phase makes it an ideal platform to investigate unique topological effects at […]


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Improved Bounds for Single-Nomination Impartial Selection

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Felix Fischer | First 5 Authors: Javier Cembrano, Felix Fischer, Max Klimm | Summary: We give new bounds for the single-nomination model of impartial selection, a problem proposed by Holzman and Moulin (Econometrica, 2013). A selection mechanism, which may be randomized, selects one individual from a group of $n$ based on nominations among […]


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Unconfounded Propensity Estimation for Unbiased Ranking

Posted by klaurent Cornell, This Week: Nanoscience

Kavli Affiliate: Dan Luo | First 5 Authors: [#item_custom_name[1]], [#item_custom_name[2]], [#item_custom_name[3]], [#item_custom_name[4]], [#item_custom_name[5]] | Summary: The goal of unbiased learning to rank (ULTR) is to leverage implicit user feedback for optimizing learning-to-rank systems. Among existing solutions, automatic ULTR algorithms that jointly learn user bias models (i.e., propensity models) with unbiased rankers have received a lot […]


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Breakdown of helical edge state topologically protected conductance in time-reversal-breaking excitonic insulators

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Joel E. Moore | First 5 Authors: Yan-Qi Wang, Michał Papaj, Joel E. Moore | Summary: Gapless helical edge modes are a hallmark of the quantum spin Hall effect. Protected by time-reversal symmetry, each edge contributes a quantized zero-temperature conductance quantum $G_0 equiv e^2/h$. However, the experimentally observed conductance in WTe$_2$ decreases below […]


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Power Grid Transient Analysis via Open-Source Circuit Simulator: A Case Study of HVDC

Posted by klaurent Berkeley, This Week: Nanoscience

Kavli Affiliate: Xiang Zhang | First 5 Authors: Yongli Zhu, Xiang Zhang, Renchang Dai | Summary: This paper proposes an electronic circuit simulator-based method to accelerate the power system transient simulation, where the modeling of a generic HVDC (High Voltage Direct Current) system is focused. The electronic circuit simulation equations and the backward differentiation formula […]


Continue.. Power Grid Transient Analysis via Open-Source Circuit Simulator: A Case Study of HVDC