@article{ISI:000222530200055,
 abstract = {We study the low-energy properties of a sawtooth chain with spin-1's at
the bases of the triangles and spin-1/2's at the vertices of the
triangles. The spins have Heisenberg antiferromagnetic interactions
between nearest neighbors, with a coupling J(2) between a spin-1 and a
spin-1/2, and a coupling J(1)=1 between two spin-1's. Analysis of the
exact diagonalization data for periodic chains containing up to N=12
unit cells shows that the ground state is a singlet for exchange
couplings up to approximately J(2)=3.8, whereas for larger J(2) the
system exhibits a ferrimagnetic ground state characterized by a net
ferromagnetic moment per unit cell of 1/2. In the region of small
interactions J(2), the mixed spin sawtooth chain maps on to an effective
isotropic spin model representing two weakly interacting and frustrated
spin-1/2 Heisenberg chains composed of spin-1/2 sites at odd and even
vertices, respectively. Finally, we study the phenomenon of a
macroscopic magnetization jump which occurs if a magnetic field is
applied with a value close to the saturation field for J(2)=2.},
 article-number = {214406},
 author = {Chandra, VR and Sen, D and Ivanov, NB and Richter, J},
 doi = {10.1103/PhysRevB.69.214406},
 issn = {1098-0121},
 journal = {PHYSICAL REVIEW B},
 month = {JUN},
 number = {21},
 orcid-numbers = {Ivanov, Nedko/0000-0002-7681-9974},
 researcherid-numbers = {Richter, Johannes/A-6339-2009
},
 times-cited = {17},
 title = {Antiferromagnetic sawtooth chain with spin-(1)/(2) and spin-1 sites},
 unique-id = {ISI:000222530200055},
 volume = {69},
 year = {2004}
}