Spin bias measurement based on a quantum point contact

Yanxia Xing; Qing Feng Sun; Jian Wang

doi:10.1063/1.2999587

Spin bias measurement based on a quantum point contact

Yanxia Xing^*, Qing Feng Sun, Jian Wang

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

Electron charge transport through a quantum point contact (QPC) driven by an asymmetric spin bias (SB) is studied. A large charge current is induced when the transmission coefficient of the QPC jumps from one integer plateau to the next. Furthermore, for an open external circuit, the induced charge bias instead of the charge current is found to be quite large. It provides an efficient and practical way to detect SB by using a very simple device, a QPC or a STM tip. In addition, with the aid of magnetic field, polarization direction of the SB can also be determined.

Original language	English
Article number	142107
Journal	Applied Physics Letters
Volume	93
Issue number	14
DOIs	https://doi.org/10.1063/1.2999587
Publication status	Published - 2008
Externally published	Yes

Access to Document

10.1063/1.2999587

Cite this

@article{0d1adb18b1a24355bc43ecadad2a9235,

title = "Spin bias measurement based on a quantum point contact",

abstract = "Electron charge transport through a quantum point contact (QPC) driven by an asymmetric spin bias (SB) is studied. A large charge current is induced when the transmission coefficient of the QPC jumps from one integer plateau to the next. Furthermore, for an open external circuit, the induced charge bias instead of the charge current is found to be quite large. It provides an efficient and practical way to detect SB by using a very simple device, a QPC or a STM tip. In addition, with the aid of magnetic field, polarization direction of the SB can also be determined.",

author = "Yanxia Xing and Sun, {Qing Feng} and Jian Wang",

year = "2008",

doi = "10.1063/1.2999587",

language = "English",

volume = "93",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

number = "14",

}

TY - JOUR

T1 - Spin bias measurement based on a quantum point contact

AU - Xing, Yanxia

AU - Sun, Qing Feng

AU - Wang, Jian

PY - 2008

Y1 - 2008

N2 - Electron charge transport through a quantum point contact (QPC) driven by an asymmetric spin bias (SB) is studied. A large charge current is induced when the transmission coefficient of the QPC jumps from one integer plateau to the next. Furthermore, for an open external circuit, the induced charge bias instead of the charge current is found to be quite large. It provides an efficient and practical way to detect SB by using a very simple device, a QPC or a STM tip. In addition, with the aid of magnetic field, polarization direction of the SB can also be determined.

AB - Electron charge transport through a quantum point contact (QPC) driven by an asymmetric spin bias (SB) is studied. A large charge current is induced when the transmission coefficient of the QPC jumps from one integer plateau to the next. Furthermore, for an open external circuit, the induced charge bias instead of the charge current is found to be quite large. It provides an efficient and practical way to detect SB by using a very simple device, a QPC or a STM tip. In addition, with the aid of magnetic field, polarization direction of the SB can also be determined.

UR - http://www.scopus.com/inward/record.url?scp=53649090683&partnerID=8YFLogxK

U2 - 10.1063/1.2999587

DO - 10.1063/1.2999587

M3 - Article

AN - SCOPUS:53649090683

SN - 0003-6951

VL - 93

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

M1 - 142107

ER -

Spin bias measurement based on a quantum point contact

Abstract

Access to Document

Other files and links

Fingerprint

Cite this