为了提升大学物理教学效果,培养学生的综合能力,文章首先分析了高校大学物理教学现状,然后论述了高校大学物理教学改革策略,包括教学内容改革、教学方法改革、考核方式改革、教师自我提升.

分析了传统教学模式与翻转式教学模式特点,比较了它们在教学实施中的优缺点,提出在OBE理念下高校通识类课程需将这两种教学模式有机结合,才能更好地培养学生的综合能力,提高教学质量,达到成果产出的最终效果.

We study theoretically the Josephson current in an s-wave superconductor/noncentrosymmetric superconductor (SWSC/NCSC) junction. Based on the Bogoliubov-de Gennes equation and the quantum scattering method, we show that the Josephson current periodicity is π not 2π when the NCSC has only a pure p-wave component, whereas when both the s-wave and p-wave components are considered together in the NCSC, the Josephson current periodicity recovers to be the usual one 2π . It is also shown that the coupling strength of the junction as well as the Rashba spin-orbit coupling in the NCSC can significantly affect the periodicity of the Josephson current and its phase dependence. Our findings are useful to discern the order parameter symmetry in the NCSC.

研究在干净极限的情形下,铁基超导的带间耦合作用和界面散射对S/I/S±超导结约瑟夫森电流的调控.基于Bogoliubov-de Gennes方程和量子散射理论,计算出Andreev束缚态能量,进一步得出约瑟夫森电流,发现带间耦合作用可使约瑟夫森电流出现反转效应,此特性可以帮助确定铁基超导中s±波的配对性质.

介绍了一种对静态拉伸法杨氏模量测量仪的改进方法,利用拉力传感器和自制的螺旋传动装置代替传统仪器中的砝码,解决了传统仪器存在的问题,提高了测量精度.

In this paper we present a new scheme of the diagrammatic pseudo-particle approach based on the Luttinger-Ward functional for the full KLM of the heavy fermions systems with RKKY interaction.The optical conductivity of KLM is also given as an example of applying this approach.

针对应用型本科院校普遍碰到的物理实验课时较少、软硬件投入不足、教学方法单一、教学效果较差等问题,以金陵科技学院(以下简称“我院”)大学物理实验课程建设为例,通过设置与各专业紧密结合的实验项目,加大实验教学平台建设投入力度,创新课堂教学模式,推动网络教学,积极组织创新实践活动,在课程建设过程中逐步解决这些问题,同时也着力培养了学生的应用能力和创新能力.

分析了单电子情况下InAs/InGaAs核壳结构量子点中系统总哈密顿,利用有效质量理论求解了稳态薛定谔方程；在考虑电子—声子相互作用下,利用微扰理论计算得到系统的能谱及波函数,并对其参量关系进行了分析和讨论.

We study the Rashba spin-orbit coupling (RSOC) effect on the supercurrent in a clean triplet superconductor/two-dimensional electron gas/triplet superconductor (TS/2DEG/TS) junction, where RSOC is considered in the 2DEG region. Based on the Bogoliubov-de Gennes equation and quantum scattering method, we show that RSOC can lead to a 0-π oscillation of supercurrent and the abrupt current reversal effect. The current direction can be reversed by a tiny modulation of RSOC, and this is attributed to the equal spin pairing of the TS order parameter and the spin precession phase of the quasiparticle traveling in the RSOC region. The RSOC strength can be controlled by an electric field in experiments, thus our findings provide a purely electric means to modulate the supercurrent in TS Josephson junctions.

We study the electric control of the Josephson current flowing in a clean triplet superconductor (TS) junction with a two-dimensional electron gas (2DEG) layer between two leads. The Rashba spin-orbit coupling (RSOC) is considered in the 2DEG region and its strength can be altered by an external electric field. Since the TS Cooper pairs can achieve a spin precession phase due to the pseudomagnetic field from RSOC when they travel in the 2DEG region, the Josephson current exhibits a regular 0-π oscillation, abrupt current reversal effect, and an unusual temperature dependence. Our findings may provide a purely electric means to control the Josephson current.

We report a theoretical study on the tunneling conductance of two-dimensional electron gas/insulator/noncentrosymmetric superconductor (SC) junction, in which Rashba spin–orbital coupling (RSOC) exists in both sides of the junction and the SC lead has a mixed singlet and triplet superconducting correlation. Employing the extended Blonder–Tinkham–Klapwijk formalism, we found that RSOC in either side of the junction can enhance or suppress the conductance, depending on the junction parameters such as the Fermi wave-vectors of the leads and the insulator barrier strength between the two leads. This is different from the effect of a ferromagnetic lead. It is also found that the conductance spectra exhibit distinctive peaks and turning points, which are very useful for determining the relative strength of the singlet and triplet gaps of the SC lead, as well as the RSOC constant of the noncentrosymmetric SC from tunneling conductance measurements.

Abstract： In this paper ,we studied the transverse persistent charge current flowing at the interface of the FM/2DEG junction, the Rashba spin orbit interaction is considered in 2DEG lead. By using the quantum scattering method , we found that a nonzero transverse charge current flows along interface at the zero bias applied on the junction, and the current can affected by system parameters such as Fermi energy, spin orbit coupling constant, as well as the FM magnetization including its magnitude and direction.. When the magnetization is parallel to the interface, the charge current vanishes, whereas it arrives at the maximum as the magnetization of the FM electrode in the 2DEG plane and perpendicular to the interface. We have also studied the non-equilibrium case that the nonzero bias is applied on the junction, the transverse charge current was also found flowing at the interface but its magnitude is much larger than the equilibrium case due to the smearing effect, which is favorable to the experimental measurement.