Details

Autor(en) / Beteiligte

• Chatterjee, Monalisa
• Maiti, Debasmita
• Kumar, Manoranjan

Titel

Quantum Phase Diagram of a Frustrated Spin‐1/2 Ferro‐Antiferromagnetic Normal Ladder

Ist Teil von

• Chemphyschem, 2023-03, Vol.24 (5), p.e202200538-n/a

Ort / Verlag

Germany: Wiley Subscription Services, Inc

Erscheinungsjahr

2023

Quelle

Wiley Online Library

Beschreibungen/Notizen

• In this work, we consider a frustrated two‐leg spin‐1/2 ladder composed of Heisenberg ferromagnetic and antiferromagnetic spin‐1/2 chains, and nearest spins from different legs interact via Heisenberg type rung exchange interactions that can be either ferromagnetic or antiferromagnetic in nature. The competing exchange interactions in the system lead to five different quantum phases like ferromagnetic, non‐collinear ferrimagnetic (NCF), m-1/4 ${m - 1/4}$ , antiferromagnetic and dimer phases. The  quantum phase diagram is constructed for the Heisenberg spin‐1/2 model and the phases are characterized using the correlation functions which are calculated by the density matrix renormalization group method. We also analyze the  stability of m-1/4 ${m - 1/4}$ phase and calculate the pitch angle θ ${\left( \theta \right)}$ in the NCF phase. The two‐leg ladder model with ferro‐ and antiferromagnetic exchange interactions along the legs and coupling with ferro‐ or antiferromagnetic rung interactions is considered here. A DMRG analysis of this model reveals an intriguing phase diagram with five distinct phases. The NCF phase is the most dominant phase, followed by FM, AFM, dimer and m‐1/4 phase.