14 citations · 74 across the 15 of their papers we have counts for
15 papers
Unconventional Spin Valve Based on Normal Metal/Chiral Molecule/Altermagnet Junctions
Tian-Yi Zhang, Peng-Yi Liu, Yu-Fei Sun +2
Chiral molecules have attracted broad interdisciplinary interest for their ability to produce highly spin-polarized current. This phenomenon, known as the chiral-induced spin selec…
Quantum anomalous Hall effect in chiral semimetals
Peng-Yi Liu, Yu-Hao Wan, Qing-Feng Sun
The quantum anomalous Hall (QAH) effect is conventionally understood to exist only in Chern insulators, while a recent study has shown that ferromagnetic metals can also host the Q…
Engineering chiral-induced spin selectivity in an artificial topological quantum well
Lizhou Liu, Peng-Yi Liu, Tian-Yi Zhang +1
Chiral-induced spin selectivity (CISS) is a striking phenomenon in which spin-unpolarized electrons become spin-polarized after traversing a chiral medium. Theoretical studies have…
The emergence of net chirality in two-dimensional Dirac fermions system with altermagnetic mass
Peng-Yi Liu, Yu-Hao Wan, Qing-Feng Sun
In two-dimensional lattice systems, massless Dirac fermions undergo doubling, leading to the cancellation of net chirality. We demonstrate that the recently discovered altermagneti…
Helical Fermi Arc in Altermagnetic Weyl Semimetal
Yu-Hao Wan, Cheng-Ming Miao, Peng-Yi Liu +1
We investigate the topological properties of modified Dirac Hamiltonians with an altermagnetic mass term and reveal a novel mechanism for realizing altermagnetic Weyl semimetals. U…
Quantum Anomalous Hall Effect in Ferromagnetic Metals
Yu-Hao Wan, Peng-Yi Liu, Qing-Feng Sun
The quantum anomalous Hall (QAH) effect holds fundamental importance in topological physics and technological promise for electronics. It is generally believed that the QAH effect…
Spin-to-charge conversion driven by inverse chiral-induced spin selectivity
Tian-Yi Zhang, Peng-Yi Liu, Ai-Min Guo +1
Chiral molecules have attracted significant multidisciplinary interest and extensive research owing to their remarkable ability to achieve charge-to-spin conversion, known as the c…
Spin-to-charge conversion modulated by chiral molecules
Peng-Yi Liu, Tian-Yi Zhang, Ai-Min Guo +2
Molecular chirality and electron spin are intricately intertwined via the fascinating phenomenon of chiral-induced spin selectivity (CISS), which has garnered considerable attentio…
Dynamical simulation of chiral induced spin-polarization and magnetization
Peng-Yi Liu, Tian-Yi Zhang, Qing-Feng Sun
Despite generally lacking ferromagnetic properties or strong spin-orbit coupling, electrons in chiral molecules exhibit unique spin-dependent transport behavior, known as chiral-in…
Interplay of Altermagnetic Order and Wilson Mass in the Dirac Equation: Helical Edge States without Time-Reversal Symmetry
Yu-Hao Wan, Peng-Yi Liu, Qing-Feng Sun
We investigate topological phases in three-dimensional topological insulator (3DTI) thin films interfaced with altermagnetic (AM) orders. Starting from a modified Dirac equation, w…
Anomalous Magnetoresistance beyond the Jullière Model for Spin Selectivity in Chiral Molecules
Tian-Yi Zhang, Yue Mao, Peng-Yi Liu +2
The issue of anomalous high magnetoresistance, beyond the Jullière model, observed in nonmagnetic electrode-chiral molecular-ferromagnetic electrode devices has puzzled the communi…
Construction of Kondo Chains by Engineering Porphyrin π-Radicals on Au(111)
Yan Zhao, Kaiyue Jiang, Peng-Yi Liu +16
Quantum manipulation of molecular radical spins provides a crucial platform for exploring emergent phenomena in many-body systems. Here, we combine surface-confined synthesis with…
Dissipation and dephasing in quantum Hall interferometers
Peng-Yi Liu, Qing-Feng Sun
In recent years, counter-intuitive results have shown that the quantum Hall edge states with topological protection can be dissipative. In this paper, we point out that the non-equ…
Four-terminal graphene-superconductor thermal switch controlled by the superconducting phase difference
Peng-Yi Liu, Yue Mao, Qing-Feng Sun
We propose a superconducting phase-controlled thermal switch based on a four-terminal graphene-superconductor system. By the coupling of two superconducting leads on a zigzag graph…
Classification of Chern Numbers Based on High-Symmetry Points
Yu-Hao Wan, Peng-Yi Liu, Qing-Feng Sun
The Chern number is a crucial topological invariant for distinguishing the phases of Chern insulators. Here we find that for Chern insulators with inversion symmetry, the Chern num…