Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2006-05-08
Phys. Rev. B 74, 020403(R) (2006)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages RevTex4, 4 figures. Minor changes, title modified. Additional material is available here: http://www.theorie.physik.
Scientific paper
10.1103/PhysRevB.74.020403
The frustrated ferromagnetic spin-1/2 Heisenberg chain is studied by means of a low-energy field theory as well as the density-matrix renormalization group and exact diagonalization methods. Firstly, we study the ground-state phase diagram in a magnetic field and find an `even-odd' (EO) phase characterized by bound pairs of magnons in the region of two weakly coupled antiferromagnetic chains. A jump in the magnetization curves signals a first-order transition at the boundary of the EO phase, but otherwise the curves are smooth. Secondly, we discuss thermodynamic properties at zero field, where we confirm a double-peak structure in the specific heat for moderate frustrating next-nearest neighbor interactions.
Heidrich-Meisner Fabian
Honecker Andreas
Vekua Temo
No associations
LandOfFree
Frustrated ferromagnetic spin-1/2 chain in a magnetic field: The phase diagram and thermodynamic properties 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 Frustrated ferromagnetic spin-1/2 chain in a magnetic field: The phase diagram and thermodynamic properties, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frustrated ferromagnetic spin-1/2 chain in a magnetic field: The phase diagram and thermodynamic properties will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-463329