Second spectrum of 1 / f noise due to mobility fluctuations : Simulations vs experiments in suspended graphene

Weijun Zeng; Kirsi Tappura; Masahiro Kamada; Antti Laitinen; Heikki Seppä; Pertti Hakonen

doi:10.1063/5.0153467

Second spectrum of 1 / f noise due to mobility fluctuations : Simulations vs experiments in suspended graphene

Weijun Zeng, Kirsi Tappura, Masahiro Kamada, Antti Laitinen, Heikki Seppä, Pertti Hakonen^*

^*Tämän työn vastaava kirjoittaja

VTT Technical Research Centre of Finland Ltd.

Tutkimustuotos: Lehtiartikkeli › Article › Scientific › vertaisarvioitu

2 Sitaatiot (Scopus)

79 Lataukset (Pure)

Abstrakti

Mobility fluctuations have been observed to influence 1 / f noise in mesoscopic two-dimensional conductors in recent experiments. If such mobility noise can be assigned to clustering/declustering of defects/impurities, the second spectrum should also display 1 / f character. In this work, we investigate the second spectrum of noise due to mobile impurities on a two-dimensional lattice both using kinetic Monte Carlo simulations (periodic boundary conditions either in one or two directions) and experiments on suspended graphene in Corbino geometry. The simulations indicate 1 / f δ behavior with δ ≃ 0.8 ± 0.15 for the second spectrum of noise, while the experiments on suspended graphene yield an exponent δ ≃ 0.7 ± 0.3 , independent of the amount of adsorbed atoms.

Alkuperäiskieli	Englanti
Artikkeli	013509
Sivut	1-6
Sivumäärä	6
Julkaisu	Applied Physics Letters
Vuosikerta	123
Numero	1
DOI - pysyväislinkit	https://doi.org/10.1063/5.0153467
Tila	Julkaistu - 3 heinäk. 2023
OKM-julkaisutyyppi	A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Pääsy asiakirjaan

10.1063/5.0153467

Second spectrum of 1_f noise due to mobility fluctuationsFinal published version, 1,58 MBLisenssi: CC BY

Muut tiedostot ja linkit

Linkki julkaisuun Scopuksessa

-: European Microkelvin Platform
Hakonen, P. (Vastuullinen tutkija)
01/01/2019 → 31/12/2023
Projekti: EU: Framework programmes funding
Kvanttiteknologian huippuyksikkö
Hakonen, P. (Vastuullinen tutkija), Elo, T. (Projektin jäsen), Kumar, M. (Projektin jäsen) & Suresh, K. (Projektin jäsen)
01/01/2018 → 31/12/2020
Projekti: Academy of Finland: Other research funding
1/f kohina
Hakonen, P. (Vastuullinen tutkija), Will, M. (Projektin jäsen), Haque, M. (Projektin jäsen), Thanniyil Sebastian, A. (Projektin jäsen), Kamada, M. (Projektin jäsen), Sarkar, J. (Projektin jäsen) & Perelshtein, M. (Projektin jäsen)
01/09/2017 → 31/08/2021
Projekti: Academy of Finland: Other research funding

OtaNano
Rissanen, A. (Manager)
Aalto-yliopisto
Laitteistot/tilat: Facility
OtaNano – Kylmälaboratorio
Savin, A. (Manager) & Rissanen, A. (Other)
OtaNano
Laitteistot/tilat: Facility

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title = "Second spectrum of 1 / f noise due to mobility fluctuations : Simulations vs experiments in suspended graphene",

abstract = "Mobility fluctuations have been observed to influence 1 / f noise in mesoscopic two-dimensional conductors in recent experiments. If such mobility noise can be assigned to clustering/declustering of defects/impurities, the second spectrum should also display 1 / f character. In this work, we investigate the second spectrum of noise due to mobile impurities on a two-dimensional lattice both using kinetic Monte Carlo simulations (periodic boundary conditions either in one or two directions) and experiments on suspended graphene in Corbino geometry. The simulations indicate 1 / f δ behavior with δ ≃ 0.8 ± 0.15 for the second spectrum of noise, while the experiments on suspended graphene yield an exponent δ ≃ 0.7 ± 0.3 , independent of the amount of adsorbed atoms.",

author = "Weijun Zeng and Kirsi Tappura and Masahiro Kamada and Antti Laitinen and Heikki Sepp{\"a} and Pertti Hakonen",

note = "Funding Information: We are grateful to Elisabetta Paladino, Christian Flindt, and Manohar Kumar for helpful comments. This work was supported by the Academy of Finland Project Nos. 310086 (LTnoise), 310087 (LTnoise) and 312295 (CoE, Quantum Technology Finland) as well as by ERC (Grant No. 670743). The research leading to these results has received funding from the European Union's Horizon 2020 Research and Innovation Programme, under Grant Agreement No. 824109. The experimental work benefited from the Aalto University OtaNano/LTL infrastructure. | openaire: EC/H2020/670743/EU//QuDeT | openaire: EC/H2020/824109/EU//EMP ",

year = "2023",

month = jul,

day = "3",

doi = "10.1063/5.0153467",

language = "English",

volume = "123",

pages = "1--6",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Second spectrum of 1 / f noise due to mobility fluctuations : Simulations vs experiments in suspended graphene

AU - Zeng, Weijun

AU - Tappura, Kirsi

AU - Kamada, Masahiro

AU - Laitinen, Antti

AU - Seppä, Heikki

AU - Hakonen, Pertti

N1 - Funding Information: We are grateful to Elisabetta Paladino, Christian Flindt, and Manohar Kumar for helpful comments. This work was supported by the Academy of Finland Project Nos. 310086 (LTnoise), 310087 (LTnoise) and 312295 (CoE, Quantum Technology Finland) as well as by ERC (Grant No. 670743). The research leading to these results has received funding from the European Union's Horizon 2020 Research and Innovation Programme, under Grant Agreement No. 824109. The experimental work benefited from the Aalto University OtaNano/LTL infrastructure. | openaire: EC/H2020/670743/EU//QuDeT | openaire: EC/H2020/824109/EU//EMP

PY - 2023/7/3

Y1 - 2023/7/3

N2 - Mobility fluctuations have been observed to influence 1 / f noise in mesoscopic two-dimensional conductors in recent experiments. If such mobility noise can be assigned to clustering/declustering of defects/impurities, the second spectrum should also display 1 / f character. In this work, we investigate the second spectrum of noise due to mobile impurities on a two-dimensional lattice both using kinetic Monte Carlo simulations (periodic boundary conditions either in one or two directions) and experiments on suspended graphene in Corbino geometry. The simulations indicate 1 / f δ behavior with δ ≃ 0.8 ± 0.15 for the second spectrum of noise, while the experiments on suspended graphene yield an exponent δ ≃ 0.7 ± 0.3 , independent of the amount of adsorbed atoms.

AB - Mobility fluctuations have been observed to influence 1 / f noise in mesoscopic two-dimensional conductors in recent experiments. If such mobility noise can be assigned to clustering/declustering of defects/impurities, the second spectrum should also display 1 / f character. In this work, we investigate the second spectrum of noise due to mobile impurities on a two-dimensional lattice both using kinetic Monte Carlo simulations (periodic boundary conditions either in one or two directions) and experiments on suspended graphene in Corbino geometry. The simulations indicate 1 / f δ behavior with δ ≃ 0.8 ± 0.15 for the second spectrum of noise, while the experiments on suspended graphene yield an exponent δ ≃ 0.7 ± 0.3 , independent of the amount of adsorbed atoms.

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U2 - 10.1063/5.0153467

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M3 - Article

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SP - 1

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 1

M1 - 013509

ER -

Second spectrum of 1 / f noise due to mobility fluctuations : Simulations vs experiments in suspended graphene

Abstrakti

Pääsy asiakirjaan

Muut tiedostot ja linkit

Sormenjälki

Projektit

-: European Microkelvin Platform

Kvanttiteknologian huippuyksikkö

1/f kohina

Laitteet

OtaNano

OtaNano – Kylmälaboratorio

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