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Søren Ulstrup

Direct observation of minibands in a twisted graphene/WS2 bilayer

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Direct observation of minibands in a twisted graphene/WS2 bilayer. / Ulstrup, Søren; Koch, Roland J.; Singh, Simranjeet; McCreary, Kathleen M.; Jonker, Berend T.; Robinson, Jeremy T.; Jozwiak, Chris; Rotenberg, Eli; Bostwick, Aaron; Katoch, Jyoti; Miwa, Jill A.

In: Science Advances, Vol. 6, No. 14, eaay6104, 2020.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Ulstrup, S, Koch, RJ, Singh, S, McCreary, KM, Jonker, BT, Robinson, JT, Jozwiak, C, Rotenberg, E, Bostwick, A, Katoch, J & Miwa, JA 2020, 'Direct observation of minibands in a twisted graphene/WS2 bilayer', Science Advances, vol. 6, no. 14, eaay6104. https://doi.org/10.1126/sciadv.aay6104

APA

Ulstrup, S., Koch, R. J., Singh, S., McCreary, K. M., Jonker, B. T., Robinson, J. T., Jozwiak, C., Rotenberg, E., Bostwick, A., Katoch, J., & Miwa, J. A. (2020). Direct observation of minibands in a twisted graphene/WS2 bilayer. Science Advances, 6(14), [eaay6104]. https://doi.org/10.1126/sciadv.aay6104

CBE

Ulstrup S, Koch RJ, Singh S, McCreary KM, Jonker BT, Robinson JT, Jozwiak C, Rotenberg E, Bostwick A, Katoch J, Miwa JA. 2020. Direct observation of minibands in a twisted graphene/WS2 bilayer. Science Advances. 6(14):Article eaay6104. https://doi.org/10.1126/sciadv.aay6104

MLA

Vancouver

Ulstrup S, Koch RJ, Singh S, McCreary KM, Jonker BT, Robinson JT et al. Direct observation of minibands in a twisted graphene/WS2 bilayer. Science Advances. 2020;6(14). eaay6104. https://doi.org/10.1126/sciadv.aay6104

Author

Ulstrup, Søren ; Koch, Roland J. ; Singh, Simranjeet ; McCreary, Kathleen M. ; Jonker, Berend T. ; Robinson, Jeremy T. ; Jozwiak, Chris ; Rotenberg, Eli ; Bostwick, Aaron ; Katoch, Jyoti ; Miwa, Jill A. / Direct observation of minibands in a twisted graphene/WS2 bilayer. In: Science Advances. 2020 ; Vol. 6, No. 14.

Bibtex

@article{f658c77786e64cae926b980c93c244ec,
title = "Direct observation of minibands in a twisted graphene/WS2 bilayer",
abstract = "Stacking two-dimensional (2D) van der Waals materials with different interlayer atomic registry in a heterobilayer causes the formation of a long-range periodic superlattice that may bestow the heterostructure with properties such as new quantum fractal states or superconductivity. Recent optical measurements of transition metal dichalcogenide (TMD) heterobilayers have revealed the presence of hybridized interlayer electron-hole pair excitations at energies defined by the superlattice potential. The corresponding quasiparticle band structures, so-called minibands, have remained elusive, and no such features have been reported for heterobilayers composed of a TMD and another type of 2D material. We introduce a new x-ray capillary technology for performing microfocused angle-resolved photoemission spectroscopy with a spatial resolution of ~1 μm, and directly observe minibands at certain twist angles in mini Brillouin zones (mBZs). We discuss their origin in terms of initial and final state effects by analyzing their dispersion in distinct mBZs.",
author = "S{\o}ren Ulstrup and Koch, {Roland J.} and Simranjeet Singh and McCreary, {Kathleen M.} and Jonker, {Berend T.} and Robinson, {Jeremy T.} and Chris Jozwiak and Eli Rotenberg and Aaron Bostwick and Jyoti Katoch and Miwa, {Jill A.}",
year = "2020",
doi = "10.1126/sciadv.aay6104",
language = "English",
volume = "6",
journal = "Science Advances",
issn = "2375-2548",
publisher = "American Association for the Advancement of Science",
number = "14",

}

RIS

TY - JOUR

T1 - Direct observation of minibands in a twisted graphene/WS2 bilayer

AU - Ulstrup, Søren

AU - Koch, Roland J.

AU - Singh, Simranjeet

AU - McCreary, Kathleen M.

AU - Jonker, Berend T.

AU - Robinson, Jeremy T.

AU - Jozwiak, Chris

AU - Rotenberg, Eli

AU - Bostwick, Aaron

AU - Katoch, Jyoti

AU - Miwa, Jill A.

PY - 2020

Y1 - 2020

N2 - Stacking two-dimensional (2D) van der Waals materials with different interlayer atomic registry in a heterobilayer causes the formation of a long-range periodic superlattice that may bestow the heterostructure with properties such as new quantum fractal states or superconductivity. Recent optical measurements of transition metal dichalcogenide (TMD) heterobilayers have revealed the presence of hybridized interlayer electron-hole pair excitations at energies defined by the superlattice potential. The corresponding quasiparticle band structures, so-called minibands, have remained elusive, and no such features have been reported for heterobilayers composed of a TMD and another type of 2D material. We introduce a new x-ray capillary technology for performing microfocused angle-resolved photoemission spectroscopy with a spatial resolution of ~1 μm, and directly observe minibands at certain twist angles in mini Brillouin zones (mBZs). We discuss their origin in terms of initial and final state effects by analyzing their dispersion in distinct mBZs.

AB - Stacking two-dimensional (2D) van der Waals materials with different interlayer atomic registry in a heterobilayer causes the formation of a long-range periodic superlattice that may bestow the heterostructure with properties such as new quantum fractal states or superconductivity. Recent optical measurements of transition metal dichalcogenide (TMD) heterobilayers have revealed the presence of hybridized interlayer electron-hole pair excitations at energies defined by the superlattice potential. The corresponding quasiparticle band structures, so-called minibands, have remained elusive, and no such features have been reported for heterobilayers composed of a TMD and another type of 2D material. We introduce a new x-ray capillary technology for performing microfocused angle-resolved photoemission spectroscopy with a spatial resolution of ~1 μm, and directly observe minibands at certain twist angles in mini Brillouin zones (mBZs). We discuss their origin in terms of initial and final state effects by analyzing their dispersion in distinct mBZs.

UR - http://www.scopus.com/inward/record.url?scp=85083288502&partnerID=8YFLogxK

U2 - 10.1126/sciadv.aay6104

DO - 10.1126/sciadv.aay6104

M3 - Journal article

C2 - 32284971

AN - SCOPUS:85083288502

VL - 6

JO - Science Advances

JF - Science Advances

SN - 2375-2548

IS - 14

M1 - eaay6104

ER -