Effective Hamiltonian for Excitons with Spin Degrees of Freedom

元データ 1998-10-15 社団法人日本物理学会

概要

Starting frorn the conventional electron-hole Hamiltonian '11.7.., we derive an effective Hartailtonian 'Ill. f'or l.s excitons with spin degrees of freedom, The Hatniltonian describes opticalprocesses close to the exciton resonance for the case of weak excitation. We show that straight-forward bosonization of '1-t.j. does not give the correct form of" H,3., which we obtain by a projection onto the strbspace spa'tnned Toy the Is exCitons. The resulting relaxation and renorrnalizationternas generate an interaction betxveen excitons xvith opposite spin. IN/Ioreover, exciton-excitonreptrlsixre interaction is greatly reduced by the renortnalization. The agreement of the presenttheory with the experizauent stmpports the validity of the description of a fertaaionic system bybosonic fields in two ditaaensions.

著者

張 紀久夫 阪大基:福井工大工
SHIMIZU Akira Institute of physics,University of Tokyo
AOKI Shuhji National Institute of Polar Research
清水 明 東大教養
Aoki Shuhji Faculty Of Science Tohoku University
清水 明 東大院総合文化・科技団
Inoue J Nagoya Univ. Nagoya
INOUE Jun-ichi Center for Frontier Science, Chiba University
Inoue J Department Of Applied Physics Nagoya University
Inoue J Department Of Basic Science University Of Tokyo:core Research For Evolutional Science And Technology
INOUE Jun-ichi Institute of Physics,University of Tokyo
BRANDES Tobias Institute of Physics,University of Tokyo
Brandes T Department Of Basic Science University Of Tokyo:core Research For Evolutional Science And Technology
Brandes Tobias Institute Of Physics University Of Tokyo : Core Research For Evolutional Science And Technology (cre
清水 明 Center For Atmospheric And Oceanic Studies Graduate School Of Science Tohoku University
Inoue Jun-ichi Institute Of Physics University Of Tokyo:core Research For Evolutional Science And Technology
Shimizu Akira Institute Of Physics The University Of Tokyo
SHIMIZU Akira Deparment of Physics, Rikkyo University
Brandes Tobias Institut für Theoretische Physik, Technische Universität Berlin, D-10623 Berlin, Germany

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