Negative Coulomb drag in a one-dimensional wire

被引：88
|
作者：
Yamamoto, M. [1 ]
Stopa, M.
Tokura, Y.
Hirayama, Y.
Tarucha, S.
机构：
[1] Univ Tokyo, Dept Appl Phys, Bunkyo Ku, Tokyo 1138656, Japan
[2] Solut Oriented Res Sci & Technol Interacting Carr, Kawaguchi, Saitama 3310012, Japan
[3] Harvard Univ, Ctr Nanoscale Syst, Cambridge, MA 02138 USA
[4] NTT Basic Res Labs, Atsugi, Kanagawa 2430198, Japan
[5] ICORP, Quantum Spin Informat Project, Atsugi, Kanagawa 2430198, Japan
来源：
SCIENCE | 2006年 / 313卷 / 5784期
关键词：
D O I：
10.1126/science.1126601
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
We observed negative Coulomb drag for parallel coupled quantum wires, in which electrons flow in the opposite directions between the wires. This only occurred under the conditions of strong correlation in the wires, that is, low density, high magnetic field, and low temperature, and cannot be addressed by a standard theory of momentum transfer. We propose a Coulomb drag model in which formation of a Wigner crystal state in the drag wire and a particle-like state in the drive wire is taken into account.
引用
收藏
页码：204 / 207
页数：4
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