Resonant tunneling through a quantum dot weakly coupled to quantum wires or quantum Hall edge states
被引:127
作者:
论文数: 引用数:
h-index:
机构:
Furusaki, A
[1
]
机构:
[1] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan
来源:
PHYSICAL REVIEW B
|
1998年
/
57卷
/
12期
关键词:
D O I:
10.1103/PhysRevB.57.7141
中图分类号:
T [工业技术];
学科分类号:
08 ;
摘要:
Resonant tunneling through a quantum dot weakly coupled to Tomonaga-Luttinger liquids is discussed. The linear conductance due to sequential tunneling is calculated by solving a master equation for temperatures below and above the average level spacing in the dot. When the parameter g characterizing the Tomonaga-Luttinger liquid is smaller than 1/2, the resonant tunneling process is incoherent down to zero temperature. At low temperature T the height and width of the conductance peaks in the Coulomb blockade oscillations are proportional to T1/g-2 and T, respectively. The contribution from tunneling via a virtual intermediate state (cotunneling) is also included. The resulting conductance formula can be applied for the resonant tunneling between edge states of fractional quantum Hall liquids with filling factor nu=1/(2m+1)=g.