Electron Auto-Localization Tailored by Its Thermal Energy: Dynamic Matrix Approach (DMA)  

作　　者：Idriss Fomadjo Fokou Michael Nana Jipdi Martin Tchoffo Lukong Cornelius Fai Idriss Fomadjo Fokou;Michael Nana Jipdi;Martin Tchoffo;Lukong Cornelius Fai(Research Unit Condensed Matter, Electronics and Signal Processing, Université de Dschang, Dschang, Cameroon;Department of Physics, Higher Teacher Training College, University of Bamenda, Bambili, Cameroon;Centre d’études et de Recherches en Agronomie et en Biodiversité, Faculté d’Agronomie et des Sciences Agricoles, University of Dschang, Dschang, Cameroon)

机构地区：[1]Research Unit Condensed Matter, Electronics and Signal Processing, Université de Dschang, Dschang, Cameroon [2]Department of Physics, Higher Teacher Training College, University of Bamenda, Bambili, Cameroon [3]Centre d’études et de Recherches en Agronomie et en Biodiversité, Faculté d’Agronomie et des Sciences Agricoles, University of Dschang, Dschang, Cameroon

出　　处：《Journal of Applied Mathematics and Physics》2021年第3期515-527,共13页应用数学与应用物理（英文）

摘　　要：This paper investigates the thermal energy effect on electron auto-localization. The polaron characteristics (self-action potential and effective mass) are observed to be expressed via the renormalized electron-phonon coupling constant tailored by the thermal energy. Low temperatures are observed to favour auto-localization of the carrier while high temperatures favour polaron undressing and subsequent quenching of the quantum behaviour thereby rendering the system classical. The critical (transition) temperature <em>τ_c</em> expressed via the critical coupling constant <span style="white-space:nowrap;">&#978;</span><em>_C</em> is found to be the separating boundary between the quantum and the classical phases. Therefore, the polaron undergoes phase transition (from self-tapped to quasi free states) when the temperature of the medium is enhanced.This paper investigates the thermal energy effect on electron auto-localization. The polaron characteristics (self-action potential and effective mass) are observed to be expressed via the renormalized electron-phonon coupling constant tailored by the thermal energy. Low temperatures are observed to favour auto-localization of the carrier while high temperatures favour polaron undressing and subsequent quenching of the quantum behaviour thereby rendering the system classical. The critical (transition) temperature <em>τ_c</em> expressed via the critical coupling constant <span style="white-space:nowrap;">&#978;</span><em>_C</em> is found to be the separating boundary between the quantum and the classical phases. Therefore, the polaron undergoes phase transition (from self-tapped to quasi free states) when the temperature of the medium is enhanced.

关 键 词：Autolocalization Quantum Phase Transition SELF-TRAPPING Critical Temperature 

分 类 号：TN2[电子电信—物理电子学]