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Showing 1 to 4 of 4 for “"Next-Nearest Neighbor Hopping"”.
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The magnetic properties of the cuprate superconductors
… state of Y Ba2Cu30 7 using a band structure with nearest and next nearest neighbor hopping, a momentum dependent spin-spin interaction and a superconducting gap with dx'2-y2 symmetry. The calculated nuclear magnetic relaxation rates and Knight shift agree favorably with experiment. This work …
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Electronic properties of doped Mott insulators and high temperature superconductors
… observations in underdoped cuprates. Next we use the SU(2) slave boson mean-field theory of the tt'J model. The role of next-nearest-neighbor hopping t' on the phase diagram is studied. We find that when t' > 0.5J a Z2 state with true spin-charge separation exists, which can be a …
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Quantum simulations on square and triangular Hubbard models
… phenomena is also identi_x001C_fied. Using next-nearest-neighbor hopping, chemical potential, and temperature as control parameters, there is a line of Lifshitz transition associated with the change of topology of the Fermi surface. Along the Lifshitz line with t'<=0, the marginal Fermi …
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Charge Echo In An Electron Gas
… considered: imperfect implimentaton of T, second-neighbor hopping terms, and coupling the electron to phonons.</p>