33 citations · 224 across the 18 of their papers we have counts for
18 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…
Second-order topological corner states in zigzag graphene nanoflake with different types of edge magnetic configurations
Cheng-Ming Miao, Qing-Feng Sun, Ying-Tao Zhang
We study the energy spectrum and energy levels of the extended Kane-Mele model with magnetic atoms on their zigzag edges. It is demonstrated that the edges of ferromagnetism or ant…
Phase diagrams and edge-state transitions in graphene with spin-orbit coupling and magnetic and pseudomagnetic fields
Yu-Chen Zhuang, Qing-Feng Sun
The quantum Hall (QH) effect, the quantum spin Hall (QSH) effect and the quantum valley Hall (QVH) effect are three peculiar topological insulating phases in graphene. They are cha…
Andreev reflection in normal metal/charge-4e superconductor junctions
Yi-Xin Dai, Qing-Feng Sun
We investigate the Andreev reflection in a normal metal/charge-4e superconductor junction.Compare with the electron-hole conversion in normal charge-2e superconductors, here four e…
Quarter-quantized thermal Hall effect with parity anomaly
Yu-Hao Wan, Qing-Feng Sun
We show that in the proximity of s-wave superconductors, the magnetic topological surface states can transform into Majorana surface state, featuring a single gapless Majorana cone…
Magnetization-Induced Phase Transitions on the surface of 3D Topological Insulators
Yu-Hao Wan, Qing-Feng Sun
From the low-energy model, the topological field theory indicates that the surface magnetization can open a surface gap in 3D topological insulators (TIs), resulting in a half-quan…
Visualizing orbital angular momentum induced single wavefront dislocation in graphene
Yi-Wen Liu, Yu-Chen Zhuang, Ya-Ning Ren +5
Phase singularities are phase-indeterminate points where wave amplitudes are zero, which manifest as phase vertices or wavefront dislocations. In the realm of optical and electron…
Perfect crossed Andreev reflection in the proximitized graphene/superconductor/proximitized graphene junctions
Shu-Chang Zhao, Lu Gao, Qiang Cheng +1
We study the crossed Andreev reflection and the nonlocal transport in the proximitized graphene/supercondcutor/proximitized graphene junctions with the pseudospin staggered potenti…
Universal spin superconducting diode effect from spin-orbit coupling
Yue Mao, Qing Yan, Yu-Chen Zhuang +1
We propose a universal spin superconducting diode effect (SDE) induced by spin-orbit coupling (SOC), where the critical spin supercurrents in opposite directions are unequal. By an…
Molecular Collapse States in Elliptical Graphene/WSe2 Heterostructure Quantum Dots
Qi Zheng, Yu-Chen Zhuang, Ya-Ning Ren +3
In relativistic physics, both atomic collapse in heavy nucleus and Hawking radiation in black hole are predicted to occur through Klein tunneling process that couples particles and…
Magnetic field-tunable valley-contrasting pseudomagnetic confinement in graphene
Ya-Ning Ren, Yu-Chen Zhuang, Qing-Feng Sun +1
Introducing quantum confinement has uncovered a rich set of interesting quantum phenomena and allows one to directly probe the physics of confined (quasi-)particles. In most experi…
Coexistence of electron whispering-gallery modes and atomic collapse states in graphene WSe2 heterostructure quantum dots
Qi Zheng, Yu-Chen Zhuang, Qing-Feng Sun +1
The relativistic massless charge carriers with a Fermi velocity of about c300 in graphene enable us to realize two distinct types of resonances (c, the speed of light in vacuum). O…
Continuously Tunable Berry Phase and Valley-Polarized Energy Spectra in Bilayer Graphene Quantum Dots
Ya-Ning Ren, Qiang Cheng, Qing-Feng Sun +1
Berry phase plays an important role in determining many physical properties of quantum systems. However, a Berry phase altering energy spectrum of a quantum system is comparatively…