Sung-Sik Lee

activity

19982023

most citedU(1) Gauge Theory of the Hubbard Model : Spin Liquid States and Possible Application to k-(BEDT-TTF)_2 Cu_2 (CN)_3

422 citations · 3.4k across the 67 of their papers we have counts for

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2 papers · 1 filter

cond-mat.mes-hall2007★ 49 cited

Many-body generalization of the Z2 topological invariant for the quantum spin Hall effect

Sung-Sik Lee, Shinsei Ryu

We propose a many-body generalization of the Z2 topological invariant for the quantum spin Hall insulator, which does not rely on single-particle band structures. The invariant is…

cond-mat.mes-hall2007★ 420 cited

Particle-Hole Symmetry and the $ν = 5/2$ Quantum Hall State

Sung-Sik Lee, Shinsei Ryu, Chetan Nayak +1

We discuss the implications of approximate particle-hole symmetry in a half-filled Landau level in which a paired quantum Hall state forms. We note that the Pfaffian state is not p…

Many-body generalization of the Z2 topological invariant for the quantum spin Hall effect

Particle-Hole Symmetry and the ν=5/2 Quantum Hall State

Particle-Hole Symmetry and the $ν = 5/2$ Quantum Hall State