FrustratedS= 1/2 Two-Leg Ladder with Different Leg Interactions
نویسندگان
چکیده
منابع مشابه
Field-induced Tomonaga-Luttinger liquid phase of a two-leg spin-1/2 ladder with strong leg interactions.
We study the magnetic-field-induced quantum phase transition from a gapped quantum phase that has no magnetic long-range order into a gapless phase in the spin-1/2 ladder compound bis(2,3-dimethylpyridinium) tetrabromocuprate (DIMPY). At temperatures below about 1 K, the specific heat in the gapless phase attains an asymptotic linear temperature dependence, characteristic of a Tomonaga-Luttinge...
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Within the kinetic energy driven superconducting mechanism, the effect of the pressure on superconductivity in the doped two-leg ladder cuprates is studied. It is shown that the superconducting transition temperature in the doped two-leg ladder cuprate superconductors increases with increasing pressure in the underpressure regime, and reaches a maximum in the optimal pressure, then decreases in...
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The Hubbard model on a two-leg ladder structure has been studied by a combination of series expansions at T = 0 and the density-matrix renormal-ization group. We report results for the ground state energy E 0 and spin-gap ∆ s at half-filling, as well as dispersion curves for one and two-hole excita-tions. For small U both E 0 and ∆ s show a dramatic drop near t/t ⊥ ∼ 0.5, which becomes more gra...
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The phase diagram of the two-leg Kondo ladder is investigated using computational techniques. Ferromagnetism is present, but only at small conduction electron densities and robust Kondo coupling J. For densities n*0.4 and any Kondo coupling, a paramagnetic phase is found. We also observed spin dimerization at densities n=1/4 and n=1/2. The spin-structure factor at small J peaks at qW = s2n ,0dp...
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ژورنال
عنوان ژورنال: Journal of Physics: Conference Series
سال: 2017
ISSN: 1742-6588,1742-6596
DOI: 10.1088/1742-6596/828/1/012003