Nanoscience – Page 5 – Kavli Institute Pre-Print Publications

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. […]

Continue..

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

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

Continue..

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 […]

Continue..

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 […]

Continue..

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 […]

Continue..

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 […]

Continue..

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 […]

Continue..

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 […]

Continue..

Braiding Majoranas in a linear quantum dot-superconductor array: Mitigating the errors from Coulomb repulsion and residual tunneling

Posted by dbos January 27, 2025Delft

Kavli Affiliate: Michael Wimmer | First 5 Authors: Sebastian Miles, Francesco Zatelli, A. Mert Bozkurt, Michael Wimmer, Chun-Xiao Liu | Summary: Exchanging the positions of two non-Abelian anyons transforms between many-body wavefunctions within a degenerate ground-state manifold. This behavior is fundamentally distinct from fermions, bosons and Abelian anyons. Recently, quantum dot-superconductor arrays have emerged as […]

Continue..

A flux-controlled two-site Kitaev chain

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

Kavli Affiliate: Srijit Goswami | First 5 Authors: Ivan Kulesh, Sebastiaan L. D. ten Haaf, Qingzhen Wang, Vincent P. M. Sietses, Yining Zhang | Summary: In semiconducting-superconducting hybrid devices, Andreev bound states (ABSs) can mediate the coupling between quantum dots (QDs), allowing for the realisation of artificial Kitaev chains. In order to engineer Majorana bound […]

Continue..