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Magnetic phase transitions of insulating spin-orbit coupled Bose atoms in one-dimensional optical lattices
摘要： We consider the insulating spin-orbit coupled Bose atoms con?ned within one-dimensional optical lattices and explore their ground-state magnetic phase transitions. Under strong interactions, the charge degrees of atoms are frozen and the system can be described by an anisotropic XXZ Heisenberg chain with Dzyaloshinskii-Moriya interaction and transverse ?eld. We apply the matrix product state method to obtain the ground states, and analyze spiral correlation functions, spin-spin correlation functions, and ?rst energy gap. Under weakly transverse ?elds, the ground state is a ferromagnetic phase if the interspin s-wave interaction strength is stronger than that of the intraspin ones, otherwise, it is a paramagnetic phase, an antiferromagnetic phase, or a gapless spiral phase with algebraic decaying spin correlations. When the transverse ?eld is strengthened, the gapless spiral phase is broken and a new spiral phase with long-range spin-spin correlations emerges.
关键词： optical lattices,XXZ Heisenberg chain,Bose atoms,magnetic phase transitions,Dzyaloshinskii-Moriya interaction,spin-orbit coupling,matrix product state method,transverse ?eld
更新于2025-09-12 10:27:22
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[IEEE 2018 19th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM) - Erlagol (Altai Republic), Russia (2018.6.29-2018.7.3)] 2018 19th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices (EDM) - Multifunctional Magnetophotonic Structure Creation Based on Magnetic Properties of Micro and Nanoscale Clusters
摘要： The optical and magnetic properties, phenomena and effects of nano- and microparticles of clusters and other formations can potentially influence the propagation and processing of optical signals in magnetophotonic structures. The analysis of existing devices and the ones proposed for interpretation of their implementation allows the correct operation algorithm in correlation to structural characteristics and to multi-functional magnetophotonic structures of micro- and nanoscale. The magnetophotonic structure models are considered and analyzed, which makes it possible to find the correct approaches for their implementation. The choice of the specific magnetophotonic medium for a functional simulator is determined by the requirements of functional orientation, simplicity and efficiency, manufacturability and other factors.
关键词： nanoclusters,magnetic phase transitions,superparamagnetism,Photonics,resonance
更新于2025-09-04 15:30:14