Quantum disordered state of magnetic charges in nanoengineered honeycomb lattice

التفاصيل البيبلوغرافية
العنوان: Quantum disordered state of magnetic charges in nanoengineered honeycomb lattice
المؤلفون: Yumnam, George, Chen, Yiyao, Guo, Jiasen, Keum, Jong K., Lauter, Valeria, Singh, Deepak K.
المصدر: Advanced Science (2021): 2004103
سنة النشر: 2021
المجموعة: Condensed Matter
مصطلحات موضوعية: Condensed Matter - Mesoscale and Nanoscale Physics, Condensed Matter - Disordered Systems and Neural Networks, Condensed Matter - Other Condensed Matter
الوصف: A quantum magnetic state due to magnetic charges is never observed, even though they are treated as quantum mechanical variable in theoretical calculations. Here, we demonstrate the occurrence of a novel quantum disordered state of magnetic charges in nanoengineered magnetic honeycomb lattice of ultra-small connecting elements. The experimental research, performed using spin resolved neutron scattering, reveals a massively degenerate ground state, comprised of low integer and energetically forbidden high integer magnetic charges, that manifests cooperative paramagnetism at low temperature. The system tends to preserve the degenerate configuration even under large magnetic field application. It exemplifies the robustness of disordered correlation of magnetic charges in 2D honeycomb lattice. The realization of quantum disordered ground state elucidates the dominance of exchange energy, which is enabled due to the nanoscopic magnetic element size in nanoengineered honeycomb. Consequently, an archetypal platform is envisaged to study quantum mechanical phenomena due to emergent magnetic charges.
نوع الوثيقة: Working Paper
DOI: 10.1002/advs.202004103
URL الوصول: http://arxiv.org/abs/2102.11943
رقم الأكسشن: edsarx.2102.11943
قاعدة البيانات: arXiv