Creation of spin-polarized current using quantum point contacts and its detection

M. Eto, T. Hayashi, Y. Kurotani, H. Yokouchi

研究成果: Conference contribution

抜粋

We theoretically study the creation of spin-polarized current using quantum point contacts (QPCs) in the presence of Rashba spin-orbit interaction. When the conductance is quantized in units of 2e2/h, the current is spin-polarized in the transverse direction to the current flow. This is due to the transition between subbands of different spins during the transport through QPCs. No magnetic field is required. To detect the spin polarization of the current, we examine the transport properties of a QPC connected to a ferromagnetic lead. We observe the maximum (minimum) conductance when the magnetization in the lead is parallel or antiparallel (perpendicular) to the spin-polarization direction of the current from QPC.

元の言語English
ホスト出版物のタイトルMS+S 2006 - Controllable Quantum States
ホスト出版物のサブタイトルMesoscopic Superconductivity and Spintronics, Proceedings of the International Symposium
出版者World Scientific Publishing Co. Pte Ltd
ページ301-306
ページ数6
ISBN(印刷物)9812814612, 9789812814616
出版物ステータスPublished - 2008 1 1
イベント4th International Symposium on Mesoscopic Superconductivity and Spintronics, MS+S 2006 - Atsugi, Japan
継続期間: 2006 2 272006 3 2

出版物シリーズ

名前MS+S 2006 - Controllable Quantum States: Mesoscopic Superconductivity and Spintronics, Proceedings of the International Symposium

Other

Other4th International Symposium on Mesoscopic Superconductivity and Spintronics, MS+S 2006
Japan
Atsugi
期間06/2/2706/3/2

    フィンガープリント

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

これを引用

Eto, M., Hayashi, T., Kurotani, Y., & Yokouchi, H. (2008). Creation of spin-polarized current using quantum point contacts and its detection. : MS+S 2006 - Controllable Quantum States: Mesoscopic Superconductivity and Spintronics, Proceedings of the International Symposium (pp. 301-306). (MS+S 2006 - Controllable Quantum States: Mesoscopic Superconductivity and Spintronics, Proceedings of the International Symposium). World Scientific Publishing Co. Pte Ltd.