Transition metal dichalcogenides, featuring layered structures, have aroused enormous interest as a platform for novel physical phenomena and a wide range of potential applications. Among them, special interest has be...Transition metal dichalcogenides, featuring layered structures, have aroused enormous interest as a platform for novel physical phenomena and a wide range of potential applications. Among them, special interest has been placed upon WTe_2 and MoTe_2, which exhibit non-trivial topology both in single layer and bulk as well as pressure induced or enhanced superconductivity. We study another distorted IT material NbTe_2 through systematic electrical transport measurements. Intrinsic superconductivity with onset transition temperature(T_c^(onset)) up to 0.72 K is detected where the upper critical field(H_c) shows unconventional quasi-linear behavior,indicating spin-orbit coupling induced p-wave paring. Furthermore, a general model is proposed to fit the angledependent magnetoresistance, which reveals the Fermi surface anisotropy of NbTe_2. Finally, non-saturating linear magnetoresistance up to 50 T is observed and attributed to the quantum limit transport.展开更多
目标跟踪是计算机视觉的重要研究课题,根据跟踪对象的数目不同,可分为单目标跟踪(SOT)和多目标跟踪(MOT)。SORT算法(全称Simple Online and Realtime Tracking)是一种实用的多目标跟踪算法,可以有效进行多目标跟踪。近年来,在此算法基...目标跟踪是计算机视觉的重要研究课题,根据跟踪对象的数目不同,可分为单目标跟踪(SOT)和多目标跟踪(MOT)。SORT算法(全称Simple Online and Realtime Tracking)是一种实用的多目标跟踪算法,可以有效进行多目标跟踪。近年来,在此算法基础上诞生了DeepSORT算法,它整合了外观信息,提高了算法的性能。借助追踪算法DeepSORT与检测器YOLOv5,可以实现高性能的实时多目标检测和跟踪模型。展开更多
A series of Th and F co-doped superconductors Sm1-xThxFeAsO1-yFy are synthesized and the variation of superconductivity with the doping level is investigated. At the fixed Th doping level x = 0.1, the superconducting ...A series of Th and F co-doped superconductors Sm1-xThxFeAsO1-yFy are synthesized and the variation of superconductivity with the doping level is investigated. At the fixed Th doping level x = 0.1, the superconducting transition temperature Tc increases monotonically with F content, and finally Tc reaches a maximum of about 55K around y = 0.1, and saturates for even more F content the normal state thermopower increases monotonically with ＇overdoped＇ regime is not observed and possible explanation （y = 0.15）. Similar to the SmFeAsO1-y Fy system, the doping level. However the decrease of Tc in the is discussed.展开更多
基金Supported by the National Basic Research Program of China under Grant Nos 2018YFA0305600 and 2017YFA0303302the National Natural Science Foundation of China under Grant Nos 11888101,11774008,11704414 and 11427805+1 种基金the Strategic Priority Research Program of Chinese Academy of Sciences under Grant No XDB28000000Beijing Natural Science Foundation(Z180010)
文摘Transition metal dichalcogenides, featuring layered structures, have aroused enormous interest as a platform for novel physical phenomena and a wide range of potential applications. Among them, special interest has been placed upon WTe_2 and MoTe_2, which exhibit non-trivial topology both in single layer and bulk as well as pressure induced or enhanced superconductivity. We study another distorted IT material NbTe_2 through systematic electrical transport measurements. Intrinsic superconductivity with onset transition temperature(T_c^(onset)) up to 0.72 K is detected where the upper critical field(H_c) shows unconventional quasi-linear behavior,indicating spin-orbit coupling induced p-wave paring. Furthermore, a general model is proposed to fit the angledependent magnetoresistance, which reveals the Fermi surface anisotropy of NbTe_2. Finally, non-saturating linear magnetoresistance up to 50 T is observed and attributed to the quantum limit transport.
文摘目标跟踪是计算机视觉的重要研究课题,根据跟踪对象的数目不同,可分为单目标跟踪(SOT)和多目标跟踪(MOT)。SORT算法(全称Simple Online and Realtime Tracking)是一种实用的多目标跟踪算法,可以有效进行多目标跟踪。近年来,在此算法基础上诞生了DeepSORT算法,它整合了外观信息,提高了算法的性能。借助追踪算法DeepSORT与检测器YOLOv5,可以实现高性能的实时多目标检测和跟踪模型。
基金Supported by the National Natural Science Foundation of China under Grant No 10628408, and the National Basic ReSearch Programme of China under Grant Nos 2006CB601003 and 2007CB925001. T
文摘A series of Th and F co-doped superconductors Sm1-xThxFeAsO1-yFy are synthesized and the variation of superconductivity with the doping level is investigated. At the fixed Th doping level x = 0.1, the superconducting transition temperature Tc increases monotonically with F content, and finally Tc reaches a maximum of about 55K around y = 0.1, and saturates for even more F content the normal state thermopower increases monotonically with ＇overdoped＇ regime is not observed and possible explanation （y = 0.15）. Similar to the SmFeAsO1-y Fy system, the doping level. However the decrease of Tc in the is discussed.
