Spin signatures in the electrical response of graphene nanogaps

Víctor M. García-Suárez; Amador García-Fuente; Diego J. Carrascal; Enrique Burzurí; Max Koole; Herre S.J. Van der Zant; Maria El Abbassi; Michel Calame; Jaime Ferrer

doi:10.1039/c8nr06123h

Spin signatures in the electrical response of graphene nanogaps

Víctor M. García-Suárez, Amador García-Fuente, Diego J. Carrascal, Enrique Burzurí, Max Koole, Herre S.J. Van der Zant, Maria El Abbassi, Michel Calame, Jaime Ferrer^*

^*Corresponding author for this work

QN/van der Zant Lab

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

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Abstract

We analyse the electrical response of narrow graphene nanogaps in search for transport signatures stemming from spin-polarized edge states. We find that the electrical transport across graphene nanogaps having perfectly defined zigzag edges does not carry any spin-related signature. We also analyse the magnetic and electrical properties of nanogaps whose electrodes have wedges that possibly occur in the currently fabricated nanogaps. These wedges can host spin polarized wedge low-energy states due to the bipartite nature of the graphene lattice. We find that these spin-polarized low-energy modes give rise to low-voltage signatures in the differential conductance and to distinctive features in the stability diagrams. These are caused by fully spin-polarized currents.

Original language	English
Pages (from-to)	18169-18177
Number of pages	9
Journal	Nanoscale
Volume	10
Issue number	38
DOIs	https://doi.org/10.1039/c8nr06123h
Publication status	Published - 2018

Bibliographical note

Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

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title = "Spin signatures in the electrical response of graphene nanogaps",

abstract = "We analyse the electrical response of narrow graphene nanogaps in search for transport signatures stemming from spin-polarized edge states. We find that the electrical transport across graphene nanogaps having perfectly defined zigzag edges does not carry any spin-related signature. We also analyse the magnetic and electrical properties of nanogaps whose electrodes have wedges that possibly occur in the currently fabricated nanogaps. These wedges can host spin polarized wedge low-energy states due to the bipartite nature of the graphene lattice. We find that these spin-polarized low-energy modes give rise to low-voltage signatures in the differential conductance and to distinctive features in the stability diagrams. These are caused by fully spin-polarized currents.",

author = "Garc{\'i}a-Su{\'a}rez, \{V{\'i}ctor M.\} and Amador Garc{\'i}a-Fuente and Carrascal, \{Diego J.\} and Enrique Burzur{\'i} and Max Koole and \{Van der Zant\}, \{Herre S.J.\} and \{El Abbassi\}, Maria and Michel Calame and Jaime Ferrer",

note = "Green Open Access added to TU Delft Institutional Repository {\textquoteleft}You share, we take care!{\textquoteright} – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.",

year = "2018",

doi = "10.1039/c8nr06123h",

language = "English",

volume = "10",

pages = "18169--18177",

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TY - JOUR

T1 - Spin signatures in the electrical response of graphene nanogaps

AU - García-Suárez, Víctor M.

AU - García-Fuente, Amador

AU - Carrascal, Diego J.

AU - Burzurí, Enrique

AU - Koole, Max

AU - Van der Zant, Herre S.J.

AU - El Abbassi, Maria

AU - Calame, Michel

AU - Ferrer, Jaime

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2018

Y1 - 2018

N2 - We analyse the electrical response of narrow graphene nanogaps in search for transport signatures stemming from spin-polarized edge states. We find that the electrical transport across graphene nanogaps having perfectly defined zigzag edges does not carry any spin-related signature. We also analyse the magnetic and electrical properties of nanogaps whose electrodes have wedges that possibly occur in the currently fabricated nanogaps. These wedges can host spin polarized wedge low-energy states due to the bipartite nature of the graphene lattice. We find that these spin-polarized low-energy modes give rise to low-voltage signatures in the differential conductance and to distinctive features in the stability diagrams. These are caused by fully spin-polarized currents.

AB - We analyse the electrical response of narrow graphene nanogaps in search for transport signatures stemming from spin-polarized edge states. We find that the electrical transport across graphene nanogaps having perfectly defined zigzag edges does not carry any spin-related signature. We also analyse the magnetic and electrical properties of nanogaps whose electrodes have wedges that possibly occur in the currently fabricated nanogaps. These wedges can host spin polarized wedge low-energy states due to the bipartite nature of the graphene lattice. We find that these spin-polarized low-energy modes give rise to low-voltage signatures in the differential conductance and to distinctive features in the stability diagrams. These are caused by fully spin-polarized currents.

UR - https://www.scopus.com/pages/publications/85054438228

U2 - 10.1039/c8nr06123h

DO - 10.1039/c8nr06123h

M3 - Article

C2 - 30255912

SN - 2040-3364

VL - 10

SP - 18169

EP - 18177

JO - Nanoscale

JF - Nanoscale

IS - 38

ER -

Spin signatures in the electrical response of graphene nanogaps

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