804 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Pohang University of Science and TechnologyKR600 papers
- Korea Institute for Advanced StudyKR116 papers
- Institute for Basic ScienceKR83 papers
- Institute of Theoretical PhysicsCN63 papers
- Chinese Academy of SciencesCN61 papers
- Seoul National UniversityKR55 papers
- Sogang UniversityKR54 papers
- The University of TokyoJP53 papers
- Kyungpook National UniversityKR51 papers
- Kyoto UniversityJP50 papers
- Pusan National UniversityKR46 papers
- Hanyang UniversityKR45 papers
13 papers · 2 filters
Wave-function-based approach to quasiparticle bands: new insight into the electronic structure of c-ZnS
A. Stoyanova, L. Hozoi, P. Fulde +1
Ab initio wave-function-based methods are employed for the study of quasiparticle energy bands of zinc-blende ZnS, with focus on the Zn 3d "semicore" states. The relative energies…
Nambu-Eliashberg theory for multi-scale quantum criticality : Application to ferromagnetic quantum criticality in the surface of three dimensional topological insulators
Ki-Seok Kim, Tetsuya Takimoto
We develop an Eliashberg theory for multi-scale quantum criticality, considering ferromagnetic quantum criticality in the surface of three dimensional topological insulators. Altho…
Spin liquids in graphene
Minh-Tien Tran, Ki-Seok Kim
We reveal that local interactions in graphene allow novel spin liquids between the semi-metal and antiferromagnetic Mott insulating phases, identified with algebraic spin liquid an…
Low-temperature electrical resistivity in paramagnetic spinel LiV2O4
Victor Yushankhai, Tetsuya Takimoto, Peter Thalmeier
The 3d electron spinel compound LiV2O4 exhibits heavy fermion behaviour below 30K which is related to antiferromagnetic spin fluctuations strongly enhanced in an extended region of…
Entanglement perturbation theory for the quantum ground states in two dimensions
S. G. Chung, K. Ueda
A simple, general and practically exact method, Entanglement Perturbation Theory (EPT), is formulated to calculate the ground states of 2D macroscopic quantum systems with translat…
Critical particle-hole composites at twice the Fermi wave vector in U(1) spin liquid with a Fermi surface
Ki-Seok Kim
We find "{\it chiral symmetry breaking}" at finite energies in U(1) spin liquid, corresponding to critical particle-hole composite states with twice of the Fermi momentum (2…
Probing surface states of topological insulator: Kondo effect and Friedel oscillation under magnetic field
Minh-Tien Tran, Ki-Seok Kim
We address three issues on the role of magnetic impurities in the surface state of a three dimensional topological insulator. First, we prove that the Kondo effect of the topologic…
Novel duality in disorder driven local quantum criticality
Minh-Tien Tran, Ki-Seok Kim
We find that competition between random Kondo and random magnetic correlations results in a quantum phase transition from a local Fermi liquid to a spin liquid. The local charge su…
The thermopower as a fingerprint of the Kondo breakdown quantum critical point
K. -S. Kim, C. Pepin
We propose that the thermoelectric power distinguishes two competing scenarios for quantum phase transitions in heavy fermions : the spin-density-wave (SDW) theory and breakdown of…
NRG for the bosonic single-impurity Anderson model: Dynamics
Hyun-Jung Lee, Krzysztof Byczuk, Ralf Bulla
The bosonic single-impurity Anderson model (B-SIAM) is studied to understand the local dynamics of an atomic quantum dot (AQD) coupled to a Bose-Einstein condensation (BEC) state,…
Vertex correction and Ward identity in the U(1) gauge theory with Fermi surface
Ki-Seok Kim
We show that introduction of vertex corrections in the fully self-consistent ladder approximation does not modify dynamics of spinons and gauge fluctuations in the U(1) gauge theor…
Strongly correlated fermions on a kagome lattice
Aroon O'Brien, Frank Pollmann, Peter Fulde
We study a model of strongly correlated spinless fermions on a kagome lattice at 1/3 filling, with interactions described by an extended Hubbard Hamiltonian. An effective Hamiltoni…
The thermopower as a signature of quantum criticality in heavy fermions
Ki-Seok Kim, C. Pepin
We present a series of arguments showing that the Seebeck coefficient can be used as a decisive experiment to characterize the nature of the quantum critical point (QCP) in heavy f…