@article{2a708004ac4f40d5b9c0d1257a407dd4,
title = "Electrically tunable spin filtering for electron tunneling between spin-resolved quantum Hall edge states and a quantum dot",
abstract = "Spin filtering with electrically tunable efficiency is achieved for electron tunneling between a quantum dot and spin-resolved quantum Hall edge states by locally gating the two-dimensional electron gas (2DEG) leads near the tunnel junction to the dot. The local gating can change the potential gradient in the 2DEG and consequently the edge state separation. We use this technique to electrically control the ratio of the dot-edge state tunnel coupling between opposite spins and finally increase spin filtering efficiency up to 91%, the highest ever reported, by optimizing the local gating.",
author = "H. Kiyama and T. Fujita and S. Teraoka and A. Oiwa and S. Tarucha",
note = "Funding Information: We thank J. Kauttio for the processing of LUKAS dust samples and P. Tiittanen and T. Kauppila for LUKAS data management; G. Humphrey and J. Gaffney for the processing of GABRIELA samples; A. Amir for assistance in bioinformatics; U. Naukkarinen and R. Tiihonen for cytokine stimulations; S. Illi for cytokine data processing; M. Martikainen for dendritic cell analyses; the participating families of the LUKAS and GABRIELA studies; the field workers in the LUKAS and GABRIELA studies; and the LUKAS and GABRIELA study groups. We acknowledge funding by the Academy of Finland grants 139021 (J.P.), 256375 (M.R.), 287675 (A.M.K.), 296814 (J.P.), 296817 (M.T.) and 308254 (P.V.K.); the Juho Vainio Foundation (P.V.K., M.T.); the P{\"a}ivikki and Sakari Sohlberg Foundation (P.V.K., J.P.); The Finnish Cultural Foundation (J.P.); the Yrj{\"o} Jahnsson Foundation (P.V.K., J.P.); Kuopion seudun hengityss{\"a}{\"a}ti{\"o} (B.J.); European Union QLK4-CT-2001-00250 (J.P., H.R., P.I.P., R.L., E.v.M); the National Institute for Health and Welfare, Finland (P.V.K., A.M.K., M.T., B.J., A.H., J.P.); Alfred P. Sloan Foundation G-2016-7076 R.A.; Deutsche Zentrum f{\"u}r Lungenforschung grants (M.J.E.) and 82DZL00502 (H.R.); Deutsche Forschungsgemeinschaft (DFG)-funded SFB 1021 (H.R.); SCHA 997/8-1 (B.S.); GILKUJ-39 (B.S.); K{\"u}hne Foundation, Schindellegi, Switzerland (R.L.); MU 891/5-1 Leibniz Prize, German Research Foundation (E.v.M.); ERC2009-AdG_20090506_250268 (E.v.M.); and LSHB-CT-2006-018996 (E.v.M.). Funding Information: P.V.K., A.M.K., R.I.A., M.T., M.R., P.T., G.L., B.J., M.D., H.R., P.I.P., B.S., R.L., A.H., D.J.J.H. and J.P. do not have competing interests to disclose. M.J.E. and E.v.M. report patents EP2361632B1 and EP1964570B1 held by their institution LMU. E.v.M. reports being the recipient of funds from the European Commission for the conduct of the LUKAS (EFRAIM) and GABRIEL study and declares personal fees from Pharma Ventures, Peptinnovate Ltd, OM Pharma SA, the European Commission/European Research Council Executive Agency, Tampereen Yliopisto, the University of Turku, HAL Allergie GmbH, {\"O}kosoziales Forum Ober{\"o}sterreich and Mundipharma Deutschland GmbH & Co. KG; E.v.M. is an inventor on the patents EP1637147, EP1964570, LU101064 and EP1411977; E.v.M. is an inventor on and has received royalties from the patent EP2361632. R.K. is on the Scientific Advisory Board of Commense, Inc.",
year = "2014",
month = jun,
day = "30",
doi = "10.1063/1.4885040",
language = "English",
volume = "104",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics",
number = "26",
}