36 citations · 142 across the 19 of their papers we have counts for
19 papers
Magnetic impurities in an altermagnetic metal
Yu-Li Lee
We study the physics of dilute magnetic impurities in a two-dimensional altermagnetic metal. For the single impurity case, although the spin degeneracy is broken in an altermagneti…
Correlated second-order Dirac semimetals with Coulomb interactions
Yu-Wen Lee, Yu-Li Lee
We investigate the effects of long range Coulomb interactions on the low-temperature properties of a second-order Dirac semimetal in terms of the renormalization group. In contrast…
Magnetic impurity in a triple-component semimetal
Yu-Li Lee, Yu-Wen Lee
We investigate the effects of a magnetic impurity in a multiband touching fermion system, specifically, a triple-component semimetal with a flat band, which can be realized in a fa…
The phase diagram of a two-dimensional dirty tilted Dirac semimetal
Yu-Li Lee, Yu-Wen Lee
We investigate the effects of quenched disorder on a non-interacting tilted Dirac semimetal in two dimensions. Depending on the magnitude of the tilting parameter, the system can h…
On the renormalization of Coulomb interactions in two-dimensional tilted Dirac fermions
Yu-Wen Lee, Yu-Li Lee
We investigate the effects of long-ranged Coulomb interactions in a tilted Dirac semimetal in two dimensions by using the perturbative renormalization-group method. Depending on th…
On the nature of the magnetic phase transition in a Weyl semimetal
Yu-Li Lee, Yu-Wen Lee
We investigate the nature of the magnetic phase transition induced by the short-ranged electron-electron interactions in a Weyl semimetal by using the perturbative renormalization-…
Interplay between Coulomb blockade and Josephson effect in a topological superconductor-quantum dot device
Yu-Li Lee, Yu-Wen Lee
We study the behavior of a topological Josephson junction in which two topological superconductors are coupled through a quantum dot. We focus on the case with the bulk superconduc…
Electrical control and interaction effects of the RKKY interaction in helical liquids
Yu-Wen Lee, Yu-Li Lee
We study the RKKY interaction mediated by the helical edge states of a quantum spin Hall insulator in the presence of the Rashba spin-orbital coupling induced by an external electr…
Electrical transport through a quantum dot side-coupled to a topological superconductor
Yu-Li Lee
We propose to measure the differential conductance as a function of the bias for a quantum dot side-coupled to a topological superconductor to detect the existence of the c…
Tunneling between a topological superconductor and a Luttinger liquid
Yu-Wen Lee, Yu-Li Lee
We study the quantum point contact between the topological superconductor and the helical Luttinger liquid. The effects of the electron-electron interactions in the helical Lutting…
Electrically tunable two-channel Kondo fixed points in helical liquids
Yu-Li Lee, Yu-Wen Lee
We study a quantum dot coupled to two edge states of a quantum spin Hall insulator through electron tunnelings in the presence of a Rashba spin-orbital interaction induced by an ex…
Nonequilibrium noise correlations in a point contact of helical edge states
Yu-Wen Lee, Yu-Li Lee, Chung-Hou Chung
We investigate theoretically the nonequilibrium finite-frequency current noise in a four-terminal quantum point contact of interacting helical edge states at a finite bias voltage.…
The Universality and stability for a dilute Bose gas with a Feshbach resonance
Yu-Li Lee, Yu-Wen Lee
We study the bosonic atoms with a wide Feshbach resonance at zero temperature in terms of the renormalization group. We indicate that this system will always collapse in the dilute…
The stability of the low-dimensional mixtures of dilute quantum gases
Yu-Li Lee, Yu-Wen Lee
We study the stability of the dilute Bose-Fermi and Bose-Bose mixtures with repulsive interactions in one and two dimensions in terms of the renormalization group. For the Bose-Fer…
Ground state of graphite ribbons with zigzag edges
Yu-Li Lee, Yu-Wen Lee
We study the interaction effects on the ground state of nanographite ribbons with zigzag edges. Within the mean-field approximation, we found that there are two possible phases: th…
Kondo Effects in Quantum Dots at Large Bias
Yu-Wen Lee, Yu-Li Lee
Recently, the issue of whether the Kondo problem in quantum dots at large bias is a weak-coupling problem or not has been raised. In this paper, we revisit this problem by carefull…
Magnetic impurities in the one-dimensional spin-orbital model
Yu-Wen Lee, Yu-Li Lee
Using one-dimensional spin-orbital model as a typical example of quantum spin systems with richer symmetries, we study the effect of an isolated impurity on its low energy dynamics…
Effects of a magnetic field on the one-dimensional spin-orbital model
Yu-Li Lee, Yu-Wen Lee
We study the effects of a uniform magnetic field on the one-dimensional spin-orbital model in terms of effective field theories. Two regions are examined: one around the SU(4) poin…
Low Energy Effective Action of Lightly Doped Two-Leg t-J Ladders
Yu-Wen Lee, Yu-Li Lee
We propose a low energy effective theory of lightly doped two-leg t-J ladders with the help of slave fermion technique. The continuum limit of this model consists of two kinds of D…