Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2010-03-17
Physics
Condensed Matter
Strongly Correlated Electrons
12 pages, 3 figures, submitted to PRB
Scientific paper
We investigate the physical consequences of orbital current patterns (OCP) in doped two-leg Cu-O Hubbard ladders. The internal symmetry of the pattern, in the case of the ladder structure, differs slightly from that suggested so far for cuprates. We focus on this OCP and look for measurable signatures of its existence. We compute the magnetic field produced by the OCP at each lattice site, and estimate its value in view of a possible experimental detection. Using a renormalization group (RG) analysis, we determine the changes that are caused by the SU(2) spin-rotational symmetry breaking which occurs when the OCP is present in the ground state phase diagram. The most signifcant one is an in-plane SDW gap opening in an otherwise critical phase, at intermediate dopings. We estimate the value of this gap, give an analytic expression for the correlation functions and examine some of the magnetic properties of this new phase which can be revealed in measurements. We compute the conductance in the presence of a single impurity, using an RG analysis. A discussion of the various sources of SU(2) symmetry breaking underscores the specificity of the OCP induced effects.
Chudzinski Piotr
Gabay Marc
Giamarchi Thierry
No associations
LandOfFree
Spin rotational symmetry breaking by orbital current patterns in two-leg ladders. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Spin rotational symmetry breaking by orbital current patterns in two-leg ladders., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spin rotational symmetry breaking by orbital current patterns in two-leg ladders. will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-700897