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تسجيل مستخدم جديدأبعاد الطاقة الذاتية الإلكترون-الصوتية المكشوفة من طيف الإشعاع الموجه المتحدث
Aspects of Electron-Phonon Self-Energy Revealed from Angle-Resolved Photoemission Spectroscopy
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تساهم الشبكة في الطاقة الذاتية الإلكترونية في المواد المترابطة المعقدة هو موضوع مثير للإعجاب الذي يشتغل حديثاً بمناقشات حيوية. التوقعات بشأن آثار الطاقة الذاتية الإلكترون-فونون للمواد البسيطة مثل بالاديوم والألومنيوم أدت إلى عدة أفكار خاطئة في المواد المترابطة بشدة. هنا نحلل عدداً من الحجج التي تدعي أن الفونون لا يمكن أن يكون أصل بعض الآثار الطاقة الذاتية التي تم رصدها عبر تجارب تصوير الإشعاع الموجه الزاوي (ARPES) في الموصلات الساخنة ذات الضغط العالي، بما في ذلك تبعات الحرارة والتلوث والتبادل البين النطاقات في النظم الثنائية واستبدال الأجسام الخبيثة. نظراً للأدلة التجريبية والمحاكاة التفصيلية، نظرنا إلى أن هذه الحجج ليست مؤسسة بشكل جيد.
Lattice contribution to the electronic self-energy in complex correlated oxides is a fascinating subject that has lately stimulated lively discussions. Expectations of electron-phonon self-energy effects for simpler materials, such as Pd and Al, have resulted in several misconceptions in strongly correlated oxides. Here we analyze a number of arguments claiming that phonons cannot be the origin of certain self-energy effects seen in high-$T_c$ cuprate superconductors via angle resolved photoemission experiments (ARPES), including the temperature dependence, doping dependence of the renormalization effects, the inter-band scattering in the bilayer systems, and impurity substitution. We show that in light of experimental evidences and detailed simulations, these arguments are not well founded.
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