Controlling the size and distribution of potential barriers within a medium of interacting particles can unveil unique collective behaviors and innovative functionalities.We introduce a unique superconducting hybrid d...Controlling the size and distribution of potential barriers within a medium of interacting particles can unveil unique collective behaviors and innovative functionalities.We introduce a unique superconducting hybrid device using a novel artificial spin ice structure composed of asymmetric nanomagnets.This structure forms a distinctive superconducting pinning potential that steers unconventional motion of superconducting vortices,thereby inducing a magnetic nonreciprocal effect,in contrast to the electric nonreciprocal effect commonly observed in superconducting diodes.Furthermore,the polarity of the magnetic nonreciprocity is in situ reversible through the tunable magnetic patterns of artificial spin ice.Our findings demonstrate that artificial spin ice not only precisely modulates superconducting characteristics but also opens the door to novel functionalities,offering a groundbreaking paradigm for superconducting electronics.展开更多
Education is one of the most pivotal services in societal development as it cultivates a wide variety of skills, especially numeracy and literacy skills. However, students may have varying masteries of these two aptit...Education is one of the most pivotal services in societal development as it cultivates a wide variety of skills, especially numeracy and literacy skills. However, students may have varying masteries of these two aptitudes. Some attribute this to students’ intrinsic efforts while others attribute this to students’ capabilities and affiliated environments. In this work, I explore the numeracy and literacy aptitude patterns of students from various cultures based on a dataset that contains various demographic information, from which I deduced some preliminary trends. After the comparison of numerous machine learning algorithms, the optimal algorithm or combination of a few algorithms predicts students’ performances by classifying students of different backgrounds into various potential outcomes. The results suggest that proper resources and supports are necessary for enhanced learning.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.62288101 and 62274086)the National Key R&D Program of China(Grant No.2021YFA0718802)the Jiangsu Outstanding Postdoctoral Program。
文摘Controlling the size and distribution of potential barriers within a medium of interacting particles can unveil unique collective behaviors and innovative functionalities.We introduce a unique superconducting hybrid device using a novel artificial spin ice structure composed of asymmetric nanomagnets.This structure forms a distinctive superconducting pinning potential that steers unconventional motion of superconducting vortices,thereby inducing a magnetic nonreciprocal effect,in contrast to the electric nonreciprocal effect commonly observed in superconducting diodes.Furthermore,the polarity of the magnetic nonreciprocity is in situ reversible through the tunable magnetic patterns of artificial spin ice.Our findings demonstrate that artificial spin ice not only precisely modulates superconducting characteristics but also opens the door to novel functionalities,offering a groundbreaking paradigm for superconducting electronics.
基金supported by the National Key R&D Program of China (2020YFA0406202)the National Natural Science Foundation of China (22090042, 21731001 and 22175018)Guangxi BaGui Scholars Special Funding。
文摘Education is one of the most pivotal services in societal development as it cultivates a wide variety of skills, especially numeracy and literacy skills. However, students may have varying masteries of these two aptitudes. Some attribute this to students’ intrinsic efforts while others attribute this to students’ capabilities and affiliated environments. In this work, I explore the numeracy and literacy aptitude patterns of students from various cultures based on a dataset that contains various demographic information, from which I deduced some preliminary trends. After the comparison of numerous machine learning algorithms, the optimal algorithm or combination of a few algorithms predicts students’ performances by classifying students of different backgrounds into various potential outcomes. The results suggest that proper resources and supports are necessary for enhanced learning.
