TY - JOUR

T1 - Recombination kinetics of acceptor-bound holes in heterostructures: A probe of the local configuration of magnetically frozen electron insulators

AU - Falko, Vladimir

PY - 1994/1/15

Y1 - 1994/1/15

N2 - We show that the kinetics of recombination of holes bound at accepters from a delta-doped monolayer in a heterostructure with magnetically frozen two-dimensional (2D) electrons evolves according to the power law I(t) proportional to t(-1). This behavior is universal for any kind of 2D electron insulator (ordered or disordered) in the ultra-quantum-limit and follows over a wide time range after the photoexcitation pulse. The difference between ordered and random insulating phases shows up at the longest time delays: The ordering of electrons into a Wigner lattice yields an asymptotical single lifetime decay tail, with a recombination rate whose temperature dependence is described by the characteristic Debye-Waller-type factor.

AB - We show that the kinetics of recombination of holes bound at accepters from a delta-doped monolayer in a heterostructure with magnetically frozen two-dimensional (2D) electrons evolves according to the power law I(t) proportional to t(-1). This behavior is universal for any kind of 2D electron insulator (ordered or disordered) in the ultra-quantum-limit and follows over a wide time range after the photoexcitation pulse. The difference between ordered and random insulating phases shows up at the longest time delays: The ordering of electrons into a Wigner lattice yields an asymptotical single lifetime decay tail, with a recombination rate whose temperature dependence is described by the characteristic Debye-Waller-type factor.

U2 - 10.1103/PhysRevB.49.2242

DO - 10.1103/PhysRevB.49.2242

M3 - Comment/debate

VL - 49

SP - 2242

EP - 2245

JO - Physical review B

JF - Physical review B

SN - 0163-1829

IS - 3

ER -