Coulomb blockade effect in collision of two acoustic polarons

✍ Scribed by Yoshiyuki Ono; Toshiyuki Ozawa

• Book ID: 104428673
• Publisher: Elsevier Science
• Year: 2003
• Tongue: English
• Weight: 85 KB
• Volume: 18
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/s1386-9477(02)01094-9

✦ Synopsis

Collision between two acoustic polarons, which are complexes of an electron near the band bottom and lattice distortions around it, is numerically studied by using Su, Schrie er and Heeger's model extended to include short-ranged electronic interactions. When the two polarons have opposite spins, their collision looks quite repulsive in the absence of electronic repulsive interactions. Contrary to intuition, this e ective repulsion is reduced by relatively weak electronic interactions. Detailed analyses indicate that a kind of "Coulomb blockade e ect" might explain this reduction.