Negative differential conductance in a quantum dot and possible application to ESR detection

K. Hitachi; A. Inoue; A. Oiwa; M. Yamamoto; M. Pioro-Ladriere; Y. Tokura; S. Tarucha

doi:10.1088/1742-6596/150/2/022026

Negative differential conductance in a quantum dot and possible application to ESR detection

K. Hitachi, A. Inoue, A. Oiwa, M. Yamamoto, M. Pioro-Ladriere, Y. Tokura, S. Tarucha

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

1 Citation (Scopus)

Abstract

We propose a new scheme of detecting electron spin resonance (ESR) using a single quantum dot (QD). Suppose up-spin (down-spin) electrons can only transport through the ground (excited) state with a large (small) tunnel coupling. Negative differential conductance (NDC) appears when both states enter the transport window because of dynamical population of the excited state. This NDC can be restored by ESR when the dot-lead coupling of the ground and excited states is asymmetric between the two tunnel barriers. We first experimentally characterize the conditions of NDC, which appears when edge states are formed in the leads, to derive the parameters of tunnel coupling. We finally calculate the modulation of QD current induced by ESR to lift the NDC characteristic.

Original language	English
Article number	022026
Journal	Journal of Physics: Conference Series
Volume	150
Issue number	2
DOIs	https://doi.org/10.1088/1742-6596/150/2/022026
Publication status	Published - 01-01-2009
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1088/1742-6596/150/2/022026

Fingerprint Dive into the research topics of 'Negative differential conductance in a quantum dot and possible application to ESR detection'. Together they form a unique fingerprint.

Cite this

@article{6f27b57b44f74719ae631db2f67aacef,

title = "Negative differential conductance in a quantum dot and possible application to ESR detection",

abstract = "We propose a new scheme of detecting electron spin resonance (ESR) using a single quantum dot (QD). Suppose up-spin (down-spin) electrons can only transport through the ground (excited) state with a large (small) tunnel coupling. Negative differential conductance (NDC) appears when both states enter the transport window because of dynamical population of the excited state. This NDC can be restored by ESR when the dot-lead coupling of the ground and excited states is asymmetric between the two tunnel barriers. We first experimentally characterize the conditions of NDC, which appears when edge states are formed in the leads, to derive the parameters of tunnel coupling. We finally calculate the modulation of QD current induced by ESR to lift the NDC characteristic.",

author = "K. Hitachi and A. Inoue and A. Oiwa and M. Yamamoto and M. Pioro-Ladriere and Y. Tokura and S. Tarucha",

year = "2009",

month = jan,

day = "1",

doi = "10.1088/1742-6596/150/2/022026",

language = "English",

volume = "150",

journal = "Journal of Physics: Conference Series",

issn = "1742-6588",

publisher = "IOP Publishing Ltd.",

number = "2",

}

TY - JOUR

T1 - Negative differential conductance in a quantum dot and possible application to ESR detection

AU - Hitachi, K.

AU - Inoue, A.

AU - Oiwa, A.

AU - Yamamoto, M.

AU - Pioro-Ladriere, M.

AU - Tokura, Y.

AU - Tarucha, S.

PY - 2009/1/1

Y1 - 2009/1/1

N2 - We propose a new scheme of detecting electron spin resonance (ESR) using a single quantum dot (QD). Suppose up-spin (down-spin) electrons can only transport through the ground (excited) state with a large (small) tunnel coupling. Negative differential conductance (NDC) appears when both states enter the transport window because of dynamical population of the excited state. This NDC can be restored by ESR when the dot-lead coupling of the ground and excited states is asymmetric between the two tunnel barriers. We first experimentally characterize the conditions of NDC, which appears when edge states are formed in the leads, to derive the parameters of tunnel coupling. We finally calculate the modulation of QD current induced by ESR to lift the NDC characteristic.

AB - We propose a new scheme of detecting electron spin resonance (ESR) using a single quantum dot (QD). Suppose up-spin (down-spin) electrons can only transport through the ground (excited) state with a large (small) tunnel coupling. Negative differential conductance (NDC) appears when both states enter the transport window because of dynamical population of the excited state. This NDC can be restored by ESR when the dot-lead coupling of the ground and excited states is asymmetric between the two tunnel barriers. We first experimentally characterize the conditions of NDC, which appears when edge states are formed in the leads, to derive the parameters of tunnel coupling. We finally calculate the modulation of QD current induced by ESR to lift the NDC characteristic.

UR - http://www.scopus.com/inward/record.url?scp=77952532011&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77952532011&partnerID=8YFLogxK

U2 - 10.1088/1742-6596/150/2/022026

DO - 10.1088/1742-6596/150/2/022026

M3 - Article

AN - SCOPUS:77952532011

VL - 150

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

SN - 1742-6588

IS - 2

M1 - 022026

ER -