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A Variational Monte Carlo Study of the Current Carried by a Quasiparticle
Cody P Nave, Dmitri A. Ivanov, Patrick A. Lee
With the use of Gutzwiller-projected variational states, we study the renormalization of the current carried by the quasiparticles in high-temperature superconductors and of the qu…
Vortex description of the fractionalized phase in exciton bose condensate
Sung-Sik Lee, T. Senthil, Patrick A. Lee
As a sequel to the previous work [Phys. Rev. B 72, 235104 (2005)] we present a vortex description of the fractionalized phase in exciton bose condensate. Magnetic flux line and mon…
Emergent U(1) gauge theory with fractionalized boson/fermion from the bose condensation of exciton in multi-band insulator
Sung-Sik Lee, Patrick A. Lee
Fractionalized phases are studied in a low energy theory of exciton bose condensate in a multi-band insulator. It is shown that U(1) gauge theory with either fractionalized boson o…
Electron correlation and Fermi surface topology of NaCoO
Sen Zhou, Meng Gao, Hong Ding +2
The electronic structure of NaCoO revealed by recent photoemission experiments shows important deviations from band theory predictions. The six small Fermi surface pockets…
U(1) Gauge Theory of the Hubbard Model : Spin Liquid States and Possible Application to k-(BEDT-TTF)_2 Cu_2 (CN)_3
Sung-Sik Lee, Patrick A. Lee
We formulate a U(1) gauge theory of the Hubbard model in the slave-rotor representation. From this formalism it is argued that spin liquid phases may exist near the Mott transition…
Edge-currents in superconductors with a broken time-reversal symmetry
Bernd Braunecker, Patrick A. Lee, Ziqiang Wang
We analyze edge currents and edge bands at the surface of a time-reversal symmetry breaking d_{x^2-y^2}+id_{xy} superconductor. We show that the currents have large Friedel oscilla…