17 research outputs found
Spin-Charge Separation in the Model: Magnetic and Transport Anomalies
A real spin-charge separation scheme is found based on a saddle-point state
of the model. In the one-dimensional (1D) case, such a saddle-point
reproduces the correct asymptotic correlations at the strong-coupling
fixed-point of the model. In the two-dimensional (2D) case, the transverse
gauge field confining spinon and holon is shown to be gapped at {\em finite
doping} so that a spin-charge deconfinement is obtained for its first time in
2D. The gap in the gauge fluctuation disappears at half-filling limit, where a
long-range antiferromagnetic order is recovered at zero temperature and spinons
become confined. The most interesting features of spin dynamics and transport
are exhibited at finite doping where exotic {\em residual} couplings between
spin and charge degrees of freedom lead to systematic anomalies with regard to
a Fermi-liquid system. In spin dynamics, a commensurate antiferromagnetic
fluctuation with a small, doping-dependent energy scale is found, which is
characterized in momentum space by a Gaussian peak at (, ) with
a doping-dependent width (, is the doping
concentration). This commensurate magnetic fluctuation contributes a
non-Korringa behavior for the NMR spin-lattice relaxation rate. There also
exits a characteristic temperature scale below which a pseudogap behavior
appears in the spin dynamics. Furthermore, an incommensurate magnetic
fluctuation is also obtained at a {\em finite} energy regime. In transport, a
strong short-range phase interference leads to an effective holon Lagrangian
which can give rise to a series of interesting phenomena including linear-
resistivity and Hall-angle. We discuss the striking similarities of these
theoretical features with those found in the high- cuprates and give aComment: 70 pages, RevTex, hard copies of 7 figures available upon request;
minor revisions in the text and references have been made; To be published in
July 1 issue of Phys. Rev. B52, (1995
Na+/H+ exchanger 3 is expressed in two distinct types of ionocyte, and probably augments ammonia excretion in one of them, in the gills of the climbing perch exposed to seawater
10.3389/fphys.2017.00880Frontiers in Physiology8NOV88
Aestivation induces changes in the mRNA expression levels and protein abundance of two isoforms of urea transporters in the gills of the African Lungfish, Protopterus annectens
10.3389/fphys.2017.00071Frontiers in Physiology8FEB7
Molecular characterization of three Rhesus glycoproteins from the gills of the African lungfish, Protopterus annectens, and effects of aestivation on their mRNA expression levels and protein abundance
10.1371/journal.pone.0185814PLoS ONE1210e018581
Molecular characterization of aquaporin 1 and aquaporin 3 from the gills of the African lungfish, protopterus annectens, and changes in their branchial mRNA expression levels and protein abundance during three phases of aestivation
10.3389/fphys.2016.00532Frontiers in Physiology7NOV53
Mutation of histone H3 serine 86 disrupts GATA factor Ams2 expression and precise chromosome segregation in fission yeast
10.1038/srep14064Scientific reports51406
Pulsatile flow investigation in development of thoracic aortic aneurysm: An in-vitro validated fluid structure interaction analysis
10.29252/JAFM.12.06.29769Journal of Applied Fluid Mechanics1261855-187
Branchial Na+:K+:2Cl-cotransporter 1 and Na+/K+-ATPase a-subunit in a brackish water-type ionocyte of the euryhaline freshwater white-rimmed stingray, Himantura signifer
10.3389/fphys.2013.00362Frontiers in Physiology4 DEC
Microarray analysis of zebrafish cloche mutant using amplified cDNA and identification of potential downstream target genes
10.1002/dvdy.20444Developmental Dynamics23331163-1172DEDY