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Impact of optical phonon scattering on magnetotransport in double-barrier heterostructures
Dae Kwan Kim, Patrick Roblin, Kwang-Sup Soh +1
The transport in double-barrier heterostructures of electrons interacting with longitudinal optical phonons in the presence of parallel electric and magnetic fields is analyzed the…
Mesoscopic Luttinger Liquid Theory in an Aharonov-Bohm Ring
Mun Dae Kim, Sam Young Cho, Chul Koo Kim +1
A careful study on the mesoscopic PC in a Luttinger liquid ring is carried out. It is shown that discreteness plays an important role in calculating the PC caused by the magnetic f…
Effects of broken time-reversal symmetry on transmission zeros in the Aharonov-Bohm interferometer
Tae-Suk Kim, Sam Young Cho, Chul Koo Kim +1
In this paper, we study the behavior of the transmission zeros in the closed Aharonov-Bohm(AB) interferometer with an embedded scattering center in one arm and the corresponding ch…
Gaussian Effective Potential and the Coleman's normal-ordering Prescription : the Functional Integral Formalism
Wen-Fa Lu, Chul Koo Kim
For a class of system, the potential of whose Bosonic Hamiltonian has a Fourier representation in the sense of tempered distributions, we calculate the Gaussian effective potential…
Ferromagnetic Fixed Point of the Kondo Model in a Luttinger Liquid
Mun Dae Kim, Chul Koo Kim, Kyun Nahm +1
The Kondo effect in a Luttinger liquid is studied using the renormalization group method. By renormalizing the boson fields, scaling equations to the second order for an arbitrary…
Phase Diagram of a Two-Dimensional Neutral Classical Coulomb Gas from a Non-perturbative sine-Gordon Expansion
Wen-Fa Lu, Chul Koo Kim
Within the sine-Gordon formalism of a two-dimensional neutral classical Coulomb gas, a convergent expansion with non-perturbative nature is performed to calculate the thermodynamic…