Oscillating Magnetoresistance in Graphene p-n Junctions at Intermediate Magnetic Fields

Hiske Overweg; Hannah Eggimann; Ming Hao Liu; Anastasia Varlet; Marius Eich; Pauline Simonet; Yongjin Lee; Kenji Watanabe; Takashi Taniguchi; Klaus Richter; Vladimir I. Fal’ko; Klaus Ensslin; Thomas Ihn

doi:10.1021/acs.nanolett.6b05318

Oscillating Magnetoresistance in Graphene p-n Junctions at Intermediate Magnetic Fields

Hiske Overweg, Hannah Eggimann, Ming Hao Liu, Anastasia Varlet, Marius Eich, Pauline Simonet, Yongjin Lee, Kenji Watanabe, Takashi Taniguchi, Klaus Richter, Vladimir I. Fal’ko, Klaus Ensslin, Thomas Ihn

Department of Physics

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

7 Citations (Scopus)

Abstract

We report on the observation of magnetoresistance oscillations in graphene p-n junctions. The oscillations have been observed for six samples, consisting of single-layer and bilayer graphene, and persist up to temperatures of 30 K, where standard Shubnikov-de Haas oscillations are no longer discernible. The oscillatory magnetoresistance can be reproduced by tight-binding simulations. We attribute this phenomenon to the modulated densities of states in the n- and p-regions.

Original language	English
Pages (from-to)	2852-2857
Number of pages	6
Journal	Nano letters
Volume	17
Issue number	5
DOIs	https://doi.org/10.1021/acs.nanolett.6b05318
Publication status	Published - 2017 May 10

All Science Journal Classification (ASJC) codes

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

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10.1021/acs.nanolett.6b05318

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Overweg, Hiske ; Eggimann, Hannah ; Liu, Ming Hao ; Varlet, Anastasia ; Eich, Marius ; Simonet, Pauline ; Lee, Yongjin ; Watanabe, Kenji ; Taniguchi, Takashi ; Richter, Klaus ; Fal’ko, Vladimir I. ; Ensslin, Klaus ; Ihn, Thomas. / Oscillating Magnetoresistance in Graphene p-n Junctions at Intermediate Magnetic Fields. In: Nano letters. 2017 ; Vol. 17, No. 5. pp. 2852-2857.

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title = "Oscillating Magnetoresistance in Graphene p-n Junctions at Intermediate Magnetic Fields",

abstract = "We report on the observation of magnetoresistance oscillations in graphene p-n junctions. The oscillations have been observed for six samples, consisting of single-layer and bilayer graphene, and persist up to temperatures of 30 K, where standard Shubnikov-de Haas oscillations are no longer discernible. The oscillatory magnetoresistance can be reproduced by tight-binding simulations. We attribute this phenomenon to the modulated densities of states in the n- and p-regions.",

author = "Hiske Overweg and Hannah Eggimann and Liu, {Ming Hao} and Anastasia Varlet and Marius Eich and Pauline Simonet and Yongjin Lee and Kenji Watanabe and Takashi Taniguchi and Klaus Richter and Fal{\textquoteright}ko, {Vladimir I.} and Klaus Ensslin and Thomas Ihn",

note = "Funding Information: We thank Pe?ter Makk and Franc?ois Peeters for fruitful discussions. We acknowledge financial support from the European Graphene Flagship and the Swiss National Science Foundation via NCCR Quantum Science and Technology. M.-H.L. and K.R. acknowledge financial support by the Deutsche Forschungsgemeinschaft within SFB 689.",

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month = may,

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doi = "10.1021/acs.nanolett.6b05318",

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Oscillating Magnetoresistance in Graphene p-n Junctions at Intermediate Magnetic Fields. / Overweg, Hiske; Eggimann, Hannah; Liu, Ming Hao; Varlet, Anastasia; Eich, Marius; Simonet, Pauline; Lee, Yongjin; Watanabe, Kenji; Taniguchi, Takashi; Richter, Klaus; Fal’ko, Vladimir I.; Ensslin, Klaus; Ihn, Thomas.

In: Nano letters, Vol. 17, No. 5, 10.05.2017, p. 2852-2857.

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

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T1 - Oscillating Magnetoresistance in Graphene p-n Junctions at Intermediate Magnetic Fields

AU - Overweg, Hiske

AU - Eggimann, Hannah

AU - Liu, Ming Hao

AU - Varlet, Anastasia

AU - Eich, Marius

AU - Simonet, Pauline

AU - Lee, Yongjin

AU - Watanabe, Kenji

AU - Taniguchi, Takashi

AU - Richter, Klaus

AU - Fal’ko, Vladimir I.

AU - Ensslin, Klaus

AU - Ihn, Thomas

N1 - Funding Information: We thank Pe?ter Makk and Franc?ois Peeters for fruitful discussions. We acknowledge financial support from the European Graphene Flagship and the Swiss National Science Foundation via NCCR Quantum Science and Technology. M.-H.L. and K.R. acknowledge financial support by the Deutsche Forschungsgemeinschaft within SFB 689.

PY - 2017/5/10

Y1 - 2017/5/10

N2 - We report on the observation of magnetoresistance oscillations in graphene p-n junctions. The oscillations have been observed for six samples, consisting of single-layer and bilayer graphene, and persist up to temperatures of 30 K, where standard Shubnikov-de Haas oscillations are no longer discernible. The oscillatory magnetoresistance can be reproduced by tight-binding simulations. We attribute this phenomenon to the modulated densities of states in the n- and p-regions.

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