Nanoscience – Page 14 – Kavli Institute Pre-Print Publications

CIBER 4th flight fluctuation analysis: Pseudo-power spectrum formalism, improved source masking and validation on mocks

Posted by dbos January 29, 2025February 10, 2025Caltech

Kavli Affiliate: James J. Bock | First 5 Authors: Richard M. Feder, James J. Bock, Yun-Ting Cheng, Asantha Cooray, Phillip M. Korngut | Summary: Precise, unbiased measurements of extragalactic background anisotropies require careful treatment of systematic effects in fluctuation-based, broad-band intensity mapping measurements. In this paper we detail improvements in methodology for the Cosmic Infrared […]

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Quantum oscillations in a dipolar excitonic insulator

Posted by dbos January 29, 2025February 10, 2025Cornell

Kavli Affiliate: Jie Shan | First 5 Authors: Phuong X. Nguyen, Raghav Chaturvedi, Bo Zou, Kenji Watanabe, Takashi Taniguchi | Summary: Quantum oscillations in magnetization or resistivity are a defining feature of metals subject to an external magnetic field. The phenomenon is generally not expected in insulators without a Fermi surface. The observations of quantum […]

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Phonon-mediated electron attraction in SrTiO$_3$ via the generalized Fröhlich and deformation potential mechanisms

Posted by dbos January 28, 2025February 10, 2025Berkeley

Kavli Affiliate: Jeffrey B. Neaton | First 5 Authors: Norm M. Tubman, Christopher J. N. Coveney, Chih-En Hsu, Andres Montoya-Castillo, Marina R. Filip | Summary: Superconductivity in doped SrTiO$_3$ was discovered in 1964, the first superconducting transition observed in a doped semiconductor. However, the mechanism behind electron pairing in SrTiO$_3$ remains a subject of debate. […]

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Phonon-mediated electron attraction in SrTiO$_3$ via the generalized Fröhlich and deformation potential mechanisms

Posted by dbos January 28, 2025February 10, 2025Berkeley

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Spin frustration and unconventional spin twisting state in van der Waals ferromagnet/antiferromagnet heterostructures

Posted by dbos January 28, 2025February 10, 2025Berkeley

Kavli Affiliate: Michael F. Crommie | First 5 Authors: Tianye Wang, Qian Li, Mengmeng Yang, Yu Sun, Alpha T. N’Diaye | Summary: Atomically flat surfaces of van der Waals (vdW) materials pave an avenue for addressing a long-standing fundamental issue of how a perfectly compensated antiferromagnet (AFM) surface frustrates a ferromagnetic (FM) overlayer in FM/AFM […]

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Pair Wavefunction Symmetry in UTe2 from Zero-Energy Surface State Visualization

Posted by dbos January 28, 2025February 10, 2025Cornell

Kavli Affiliate: J. C. Seamus Davis | First 5 Authors: Qiangqiang Gu, Shuqiu Wang, Joseph P. Carroll, Kuanysh Zhussupbekov, Christopher Broyles | Summary: Although nodal spin-triplet topological superconductivity appears probable in UTe2, its superconductive order-parameter $Delta_k$ remains unestablished. In theory, a distinctive identifier would be the existence of a superconductive topological surface band (TSB), which […]

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Ultrafast neuromorphic computing with nanophotonic optical parametric oscillators

Posted by dbos January 28, 2025February 10, 2025Caltech

Kavli Affiliate: Alireza Marandi | First 5 Authors: Midya Parto, Gordon H. Y. Li, Ryoto Sekine, Robert M. Gray, Luis L. Ledezma | Summary: Over the past decade, artificial intelligence (AI) has led to disruptive advancements in fundamental sciences and everyday technologies. Among various machine learning algorithms, deep neural networks have become instrumental in revealing […]

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Object Detection for Medical Image Analysis: Insights from the RT-DETR Model

Posted by dbos January 27, 2025February 10, 2025Berkeley

Kavli Affiliate: Ting Xu | First 5 Authors: Weijie He, Yuwei Zhang, Ting Xu, Tai An, Yingbin Liang | Summary: Deep learning has emerged as a transformative approach for solving complex pattern recognition and object detection challenges. This paper focuses on the application of a novel detection framework based on the RT-DETR model for analyzing […]

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Quantum oscillations of holes in GaN

Posted by dbos January 27, 2025Cornell

Kavli Affiliate: Grace Xing | First 5 Authors: Chuan F. C. Chang, Joseph E. Dill, Zexuan Zhang, Jie-Cheng Chen, Naomi Pieczulewski | Summary: GaN has emerged to be a major semiconductor akin to silicon due to its revolutionary impacts in solid state lighting, critically enabled by p-type doping, and high-performance radio-frequency and power electronics. Suffering […]

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State Permutation Control in Non-Hermitian Multiqubit Systems with Suppressed Non-Adiabatic Transitions

Posted by dbos January 27, 2025Berkeley

Kavli Affiliate: Birgitta Whaley | First 5 Authors: Ievgen I. Arkhipov, Philippe Lewalle, Franco Nori, Şahin K. Özdemir, K. Birgitta Whaley | Summary: Non-Hermitian systems have been at the focus of intense research for over a decade, partly due to their nontrivial energy topology formed by intersecting Riemann manifolds with branch points known as exceptional […]

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