Fractionalization Signatures in the Dynamics of Quantum Spin Liquids

التفاصيل البيبلوغرافية
العنوان: Fractionalization Signatures in the Dynamics of Quantum Spin Liquids
المؤلفون: Wang, Kang, Feng, Shi, Zhu, Penghao, Chi, Runze, Liao, Hai-Jun, Trivedi, Nandini, Xiang, Tao
سنة النشر: 2024
المجموعة: Condensed Matter
مصطلحات موضوعية: Condensed Matter - Strongly Correlated Electrons
الوصف: We investigate the signatures of fractionalization in quantum spin liquids by studying different phases of the Kitaev honeycomb model in the presence of an out-of-plane magnetic field through which the model becomes non-integrable. Using the infinite Projected Entangled Pair States (iPEPS) ansatz, along with analytical calculations and exact diagonalization, we calculate dynamical signatures of fractionalized particles through spin-spin and dimer-dimer correlations. Our analysis demonstrates the ability of these correlations to discern distinct fractionalized quantum sectors, namely Majorana fermions and the emergent $Z_2$ fluxes, in both the chiral spin liquid (CSL) phase under weak field and the emergent intermediate gapless phase (IGP) under moderate field. Importantly, our calculation reveals the nature of IGP observed at moderate fields, a region of ongoing debate, indicating that this phase is a Majorana metal induced by strong flux fluctuations.
Comment: 5+8 pages, 4+9 figures
نوع الوثيقة: Working Paper
URL الوصول: http://arxiv.org/abs/2403.12141
رقم الأكسشن: edsarx.2403.12141
قاعدة البيانات: arXiv