11 papers
Josephson effects in the spin-triplet superconductor/altermagnet/spin-triplet superconductor junctions: the detection of the intrinsic -vector
Ya-Ting Han, Li-Juan Chen, Wen-Ting Liu +2
We study the Josephson effects in the spin-triplet superconductor/altermagnet/spin-triplet superconductor junctions using the Green's function method. It is found that the current-…
Helimagnetic Josephson diode effect
Qiang Cheng, Yu-Chen Zhuang, Qing-Feng Sun
We study the Josephson diode effect in the one-dimensional superconductor/helimagnet/superconductor junctions using the Green's function method. For the spin-singlet -wave pairi…
Cone-dependent retro and specular Andreev reflections in AA-stacked bilayer graphene
Wei-Tao Lu, Qing-Feng Sun
We theoretically study the Andreev reflection (AR) in AA-stacked bilayer graphene/superconductor (AABG/SC) junction. AABG has a linear gapless energy band with two shifted Dirac co…
Absence of edge states at armchair edges in inhomogeneously strained graphene under a pseudomagnetic field
Jing-Yun Fang, Yu-Chen Zhuang, Qing-Feng Sun
Nonuniform strain in graphene can induce a pseudo-magnetic field (PMF) preserving time-reversal symmetry, generating pseudo-Landau levels under zero real magnetic field (MF). The d…
Wavefront dislocations in graphene systems revealed by transport measurement
Yu-Chen Zhuang, Qing-Feng Sun
The wavefront dislocation is an important and ubiquitous phenomenon in wave fields. It is closely related to the phase singularity in a wave function. Some recent studies have veri…
Engineering topologically protected zero-dimensional interface end states in antiferromagnetic heterojunction graphene nanoflakes
Cheng-Ming Miao, Yu-Hao Wan, Qing-Feng Sun +1
We investigate the energy band structure and energy levels of a heterojunction composed of two antiferromagnetic graphene nanoflakes with opposite in-plane antiferromagnetic orderi…