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cond-mat.str-el2009★ 1 cited
Spin models of quasi-1D quantum ferrimagnets with competing interactions
N. B. Ivanov
We present a brief survey of the recent theoretical work related to generic Heisenberg spin models describing quasi-one-dimensional quantum ferrimagnets. The emphasis is on quantum…
cond-mat.str-el2008★ 29 cited
Diamond chains with multiple-spin exchange interactions
N. B. Ivanov, J. Richter, J. Schulenburg
We study the phase diagram of a symmetric spin-1/2 Heisenberg diamond chain with additional cyclic four-spin exchange interactions. The presented analysis supplemented by numerical…
cond-mat.str-el2006★ 3 cited
Magnetic phase diagram of a frustrated ferrimagnetic ladder: Relation to the one-dimensional boson Hubbard model
N. B. Ivanov, J. Richter
We study the magnetic phase diagram of two coupled mixed-spin Heisenberg chains as a function of the frustration parameter related to diagonal exchange couplings. The a…