Pair density waves in coupled doped two-leg ladders
نویسندگان
چکیده
منابع مشابه
Collective density-wave excitations in two-leg Sr14-xCaxCu24O41 ladders.
Raman measurements in the 1.5-20 cm(-1) energy range were performed on single crystals of Sr14-xCaxCu24O41. A quasielastic scattering peak (QEP) which softens with cooling is observed only in the polarization parallel to the ladder direction for samples with x=0, 8, and 12. The QEP is a Raman fingerprint of pinned collective density wave excitations screened by uncondensed carriers in the ladde...
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Hubbard ladders are an important stepping stone to the physics of the two-dimensional Hubbard model. While many of their properties are accessible to numerical and analytical techniques, the question of whether weakly hole-doped Hubbard ladders are dominated by superconducting or charge-density-wave correlations has so far eluded a definitive answer. In particular, previous numerical simulation...
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We derive the low energy effective action of lightly doped two-leg t-J ladders with the help of slave fermion technique. Because of the underlying spin liquid state, we can assume the existence of a short-ranged antiferromagnetic order for some range of parameters in the lightly doped case. This leads to the usual t ′ − J model. The continum limit of this model consists of two kinds of Dirac fe...
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J. C. Xavier,1 G. Alvarez,2 A. Moreo,3,4 and E. Dagotto3,4 1Instituto de Física, Universidade Federal de Uberlândia, Caixa Postal 593, 38400-902 Uberlândia, MG, Brazil 2Computer Science & Mathematics Division and Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA 3Department of Physics, University of Tennessee, Knoxville, Tennessee 37996, USA...
متن کاملHole doped Hubbard ladders
The formation of stripes in six-leg Hubbard ladders with cylindrical boundary conditions is investigated for two different hole dopings, where the amplitude of the hole density modulation is determined in the limits of vanishing DMRG truncation errors and infinitely long ladders. The results give strong evidence that stripes exist in the ground state of these systems for strong but not for weak...
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ژورنال
عنوان ژورنال: Physical Review B
سال: 2010
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.82.041102