39 citations · 195 across the 23 of their papers we have counts for
23 papers
Selective enhancement of Coulomb interactions in planar Weyl fermions
Vadym Apalkov, Wenchen Luo, Tapash Chakraborty
We report on our study of the electron interaction effects in topological two-dimensional (2D) materials placed in a quantizing magnetic field. Taking our cue from a recent experim…
Controllable quantum scars induced by spin-orbit couplings in quantum dots
Lin Zhang, Yutao Hu, Zhao Yao +4
Spin-orbit couplings (SOCs), originating from the relativistic corrections in the Dirac equation, offer nonlinearity in the classical limit and are capable of driving chaotic dynam…
Phase transitions and topological properties of the 5/2 quantum Hall states with strong Landau-level mixing
Wenchen Luo, Wei Zhang, Yutao Hu +1
We numerically study a 5/2 fractional quantum Hall system with even number of electrons using the exact diagonalization where both the strong Landau level (LL) mixing and a finite…
Topologically nontrivial and trivial zero modes in chiral molecules
Xiao-Feng Chen, Wenchen Luo, Tie-Feng Fang +4
Recently, electron transport along chiral molecules has been attracting extensive interest and several intriguing phenomena have been reported in recent experiments, such as the em…
Quantum Multicritical Behavior for Coupled Optical Cavities with Driven Laser Fields
Yutao Hu, Yu Zhou, Wenchen Luo +2
Quantum phase transitions with multicritical points are fascinating phenomena occurring in interacting quantum many-body systems. However, multicritical points predicted by theory…
Stability of even-denominator fractional quantum Hall states in systems with strong Landau-level mixing
Wenchen Luo, Shenglin Peng, Hao Wang +2
Mixing of Landau levels has been understood to be essential in governing the nature of the ground state for the even-denominator fractional quantum Hall effect. The incompressibili…
Unconventional supersymmetric quantum mechanics in spin systems
Amin Naseri, Yutao Hu, Wenchen Luo
It is shown that the eigenproblem of any matrix Hamiltonian with discrete eigenvalues is involved with a supersymmetric quantum mechanics. The energy dependence of the…
Isotropic All-electric Spin analyzer based on a quantum ring with spin-orbit coupling
Shenglin Peng, Wenchen Luo, Jian Sun +3
Here we propose an isotropic all electrical spin analyzer in a quantum ring with spin-orbit coupling by analytically and numerically modeling how the charge transmission rates depe…
Spin-orbit Interaction driven Topological Features in a Quantum Ring
Shenglin Peng, Wenchen Luo, Fangping Ouyang +1
One-dimensional quantum rings with Rashba and Dresselhaus spin-orbit couplings are studied analytically and are in perfect agreement with the numerical results. The topological cha…
Tuning the Topological Features of Quantum-Dot Hydrogen and Helium by a Magnetic Field
Wenchen Luo, Tapash Chakraborty
The topological charge of the spin texture in a quantum dot with spin-orbit couplings is shown analytically here to be stable against the ellipticity of the dot. It is directly tun…
Seeking Maxwell's Demon in a non-reciprocal quantum ring
Aram Manaselyan, Wenchen Luo, Daniel Braak +1
A non-reciprocal quantum ring, where one arm of the ring contains the Rashba spin-orbit interaction but not in the other arm, is found to posses very unique electronic properties.…
Spin Vortices and Skyrmions of a Single Electron in Inhomogeneous Magnetic Fields
Amin Naseri, Shenglin Peng, Wenchen Luo +1
We study the spin textures of a confined two-dimensional electron in inhomogeneous magnetic fields. These fields can either be external or effective fields due to a background magn…
Unique Spin Vortices in Quantum Dots with Spin-orbit Couplings
Wenchen Luo, Amin Naseri, Jesko Sirker +1
Spin textures of one or two electrons in a quantum dot with Rashba or Dresselhaus spin-orbit couplings reveal several intriguing properties. We show that even at the single-electro…
The Pfaffian state in an electron gas with small Landau level gaps
Wenchen Luo, Tapash Chakraborty
Landau level mixing plays an important role in the Pfaffian (or anti-Pfaffian) states. In ZnO the Landau level gap is essentially an order of magnitude smaller than that in a GaAs…
Tilt-Induced Phase Transitions in Even-Denominator Fractional Quantum Hall States at the ZnO Interface
Wenchen Luo, Tapash Chakraborty
Even denominator fractional quantum Hall states in a ZnO quantum well reveal interesting phase transitions in a tilted magnetic field. We have analyzed the planar electron gas in Z…
Understanding the Missing Fractional Quantum Hall States in ZnO
Wenchen Luo, Tapash Chakraborty
We have analyzed the crucial role the Coulomb interaction strength plays on the even and odd denominator fractional quantum Hall effects in a two-dimensional electron gas (2DEG) in…
Quantum Hall ferromagnets and transport properties of buckled Dirac materials
Wenchen Luo, Tapash Chakraborty
We study the ground states and low-energy excitations of a generic Dirac material with spin-orbit coupling and a buckling structure in the presence of a perpendicular magnetic fiel…
Excitation Gap of Fractal Quantum Hall States in Graphene
Wenchen Luo, Tapash Chakraborty
In the presence of a magnetic field and an external periodic potential, the Landau level spectrum of a two-dimensional electron gas exhibits a fractal pattern in the energy spectru…
Transport gap and hysteretic behavior of the Ising quantum Hall ferromagnets in Landau levels of bilayer graphene
Wenchen Luo, R. Côté
The chiral two-dimensional electron gas in Landau levels of a Bernal-stacked graphene bilayer has a valley-pseudospin Ising quantum Hall ferromagnetic…
Ising quantum Hall ferromagnetism in Landau levels of bilayer graphene
Wenchen Luo, R. Côté, Alexandre Bédard-Vallée
A magnetic field applied perpendicularly to the chiral two-dimensional electron gas (C2DEG)\ in a Bernal-stacked bilayer graphene quantizes the kinetic energy into a discrete set o…
Zeeman coupling and screening corrections to skyrmion excitations in graphene
Wenchen Luo, R. Côté
At half filling of the fourfold degenerate Landau levels |n| \geq 1 in graphene, the ground states are spin polarized quantum Hall states that support spin skyrmion excitations for…
Bilayer graphene as an helical quantum Hall ferromagnet
R. Cote, J. P. Fouquet, Wenchen Luo
The two-dimensional electron gas in a bilayer graphene in the Bernal stacking supports a variety of uniform broken-symmetry ground states in Landau level N=0 at integer filling fac…
Orbital and interlayer Skyrmions crystals in bilayer graphene
R. Cote, Wenchen Luo, Branko Petrov +2
A graphene bilayer in a transverse magnetic field has a set of Landau levels with energies where is the effective cyclotron…