Orbital susceptibilities of PbSe quantum dots.
Different sizes of three-dimensional PbSe quantum dots have been synthesized for the study of orbital magnetic susceptibilities. Two types of orbital susceptibilities have been found, including the Curie susceptibility and finite-size corrections to the Landau susceptibility. The Curie term of a quantum dot manifests itself in the temperature dependence of magnetic susceptibility at low temperatures, while the field dependence of differential susceptibility at high temperatures shows finite-size corrections to the Landau susceptibility. Both of the two kinds of orbital susceptibility, estimated per quantum dot, show linear dependence on the size.
Jian
W B
WB
Department of Electrophysics, National Chiao Tung University, Taiwan, Republic of China. wbjian@mail.nctu.edu.tw
Lu
Weigang
W
Fang
Jiye
J
Chiang
S J
SJ
Lan
M D
MD
Wu
C Y
CY
Wu
Z Y
ZY
Chen
F R
FR
Kai
J J
JJ