IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v8y2017i1d10.1038_s41467-017-01748-1.html
   My bibliography  Save this article

Giant magnetic splitting inducing near-unity valley polarization in van der Waals heterostructures

Author

Listed:
  • Philipp Nagler

    (Universität Regensburg)

  • Mariana V. Ballottin

    (Radboud University)

  • Anatolie A. Mitioglu

    (Radboud University)

  • Fabian Mooshammer

    (Universität Regensburg)

  • Nicola Paradiso

    (Universität Regensburg)

  • Christoph Strunk

    (Universität Regensburg)

  • Rupert Huber

    (Universität Regensburg)

  • Alexey Chernikov

    (Universität Regensburg)

  • Peter C. M. Christianen

    (Radboud University)

  • Christian Schüller

    (Universität Regensburg)

  • Tobias Korn

    (Universität Regensburg)

Abstract

Monolayers of semiconducting transition metal dichalcogenides exhibit intriguing fundamental physics of strongly coupled spin and valley degrees of freedom for charge carriers. While the possibility of exploiting these properties for information processing stimulated concerted research activities towards the concept of valleytronics, maintaining control over spin–valley polarization proved challenging in individual monolayers. A promising alternative route explores type II band alignment in artificial van der Waals heterostructures. The resulting formation of interlayer excitons combines the advantages of long carrier lifetimes and spin–valley locking. Here, we demonstrate artificial design of a two-dimensional heterostructure enabling intervalley transitions that are not accessible in monolayer systems. The resulting giant effective g factor of −15 for interlayer excitons induces near-unity valley polarization via valley-selective energetic splitting in high magnetic fields, even after nonselective excitation. Our results highlight the potential to deterministically engineer novel valley properties in van der Waals heterostructures using crystallographic alignment.

Suggested Citation

  • Philipp Nagler & Mariana V. Ballottin & Anatolie A. Mitioglu & Fabian Mooshammer & Nicola Paradiso & Christoph Strunk & Rupert Huber & Alexey Chernikov & Peter C. M. Christianen & Christian Schüller &, 2017. "Giant magnetic splitting inducing near-unity valley polarization in van der Waals heterostructures," Nature Communications, Nature, vol. 8(1), pages 1-6, December.
  • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01748-1
    DOI: 10.1038/s41467-017-01748-1
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-017-01748-1
    File Function: Abstract
    Download Restriction: no

    File URL: https://libkey.io/10.1038/s41467-017-01748-1?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Richen Xiong & Samuel L. Brantly & Kaixiang Su & Jacob H. Nie & Zihan Zhang & Rounak Banerjee & Hayley Ruddick & Kenji Watanabe & Takashi Taniguchi & Seth Ariel Tongay & Cenke Xu & Chenhao Jin, 2024. "Tunable exciton valley-pseudospin orders in moiré superlattices," Nature Communications, Nature, vol. 15(1), pages 1-10, December.
    2. Elena Blundo & Federico Tuzi & Salvatore Cianci & Marzia Cuccu & Katarzyna Olkowska-Pucko & Łucja Kipczak & Giorgio Contestabile & Antonio Miriametro & Marco Felici & Giorgio Pettinari & Takashi Tanig, 2024. "Localisation-to-delocalisation transition of moiré excitons in WSe2/MoSe2 heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-11, December.
    3. Benjamin Carey & Nils Kolja Wessling & Paul Steeger & Robert Schmidt & Steffen Michaelis de Vasconcellos & Rudolf Bratschitsch & Ashish Arora, 2024. "Giant Faraday rotation in atomically thin semiconductors," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    4. Veronica R. Policht & Henry Mittenzwey & Oleg Dogadov & Manuel Katzer & Andrea Villa & Qiuyang Li & Benjamin Kaiser & Aaron M. Ross & Francesco Scotognella & Xiaoyang Zhu & Andreas Knorr & Malte Selig, 2023. "Time-domain observation of interlayer exciton formation and thermalization in a MoSe2/WSe2 heterostructure," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    5. Andrew Y. Joe & Andrés M. Mier Valdivia & Luis A. Jauregui & Kateryna Pistunova & Dapeng Ding & You Zhou & Giovanni Scuri & Kristiaan De Greve & Andrey Sushko & Bumho Kim & Takashi Taniguchi & Kenji W, 2024. "Controlled interlayer exciton ionization in an electrostatic trap in atomically thin heterostructures," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    6. Hongbing Cai & Abdullah Rasmita & Qinghai Tan & Jia-Min Lai & Ruihua He & Xiangbin Cai & Yan Zhao & Disheng Chen & Naizhou Wang & Zhao Mu & Zumeng Huang & Zhaowei Zhang & John J. H. Eng & Yuanda Liu &, 2023. "Interlayer donor-acceptor pair excitons in MoSe2/WSe2 moiré heterobilayer," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_s41467-017-01748-1. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.