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most citedPhase diagram and topology of the XXZ chain with alternating bonds and staggered magnetic field

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cond-mat.str-el2026

Phase transitions through excited-state level crossings and topological indicators: the case of the XXZ chain with staggered Ising interaction

B. F. Márquez, K. Hallberg, A. A. Aligia

We combine two ways of determining the phase diagram of the spin- XXZ chain with a staggered Ising interaction and uniform transverse exchange, based on exact diagonalization.…