Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2003-05-29
Mod. Phys. Lett. B17, 361 (2003)
Physics
Condensed Matter
Strongly Correlated Electrons
8 pages, Revtex, three figures are included
Scientific paper
10.1142/S0217984903005251
We develop a partial charge-spin separation fermion-spin theory implemented the gauge invariant dressed holon and spinon. In this novel approach, the physical electron is decoupled as the gauge invariant dressed holon and spinon, with the dressed holon behaviors like a spinful fermion, and represents the charge degree of freedom together with the phase part of the spin degree of freedom, while the dressed spinon is a hard-core boson, and represents the amplitude part of the spin degree of freedom, then the electron single occupancy local constraint is satisfied. Within this approach, the charge transport and spin response of the underdoped cuprates is studied. It is shown that the charge transport is mainly governed by the scattering from the dressed holons due to the dressed spinon fluctuation, while the scattering from the dressed spinons due to the dressed holon fluctuation dominates the spin response.
Feng Shiping
Ma Tianxing
Qin Jihong
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