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Browsing MIT Open Access Articles by Author "Jarillo-Herrero, Pablo"

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Browsing MIT Open Access Articles by Author "Jarillo-Herrero, Pablo"

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  • Anisotropic Etching and Nanoribbon Formation in Single-Layer Graphene 
    Campos, Leonardo; Manfrinato, Vitor Riseti; Sanchez-Yamagishi, Javier D.; Kong, Jing; Jarillo-Herrero, Pablo (American Chemical Society, 2009-07)
    We demonstrate anisotropic etching of single-layer graphene by thermally activated nickel nanoparticles. Using this technique, we obtain sub-10-nm nanoribbons and other graphene nanostructures with edges aligned along a ...
  • BN/Graphene/BN Transistors for RF Applications 
    Taychatanapat, Thiti; Wang, Han; Hsu, Allen Long; Watanabe, Kenji; Taniguchi, Takashi; Jarillo-Herrero, Pablo; Palacios, Tomas (Institute of Electrical and Electronics Engineers (IEEE), 2011-08)
    In this letter, we demonstrate the first BN/graphene/BN field-effect transistor for RF applications. This device structure can preserve the high mobility and the high carrier velocity of graphene, even when it is sandwiched ...
  • Control over topological insulator photocurrents with light polarization 
    McIver, J. W.; Hsieh, David; Steinberg, Hadar; Jarillo-Herrero, Pablo; Gedik, Nuh (Nature Publishing Group, 2011-12)
    Three-dimensional topological insulators (1-3) represent a new quantum phase of matter with spin-polarized surface states (4,5) that are protected from backscattering. The static electronic properties of these surface ...
  • Electrically tunable surface-to-bulk coherent coupling in topological insulator thin films 
    Steinberg, Hadar; Laloe, Jean-Baptiste; Fatemi, Valla; Moodera, Jagadeesh; Jarillo-Herrero, Pablo (American Physical Society (APS), 2011-12)
    We study coherent electronic transport in charge-density-tunable microdevices patterned from thin films of the topological insulator (TI) Bi[subscript 2]Se[subscript 3]. The devices exhibit pronounced electric field effect, ...
  • Electronic Transport in Dual-Gated Bilayer Graphene at Large Displacement Fields 
    Taychatanapat, Thiti; Jarillo-Herrero, Pablo (American Physical Society, 2010-10)
    We study the electronic transport properties of dual-gated bilayer graphene devices. We focus on the regime of low temperatures and high electric displacement fields, where we observe a clear exponential dependence of the ...
  • Emergence of superlattice Dirac points in graphene on hexagonal boron nitride 
    Yankowitz, Matthew; Xue, Jiamin; Cormode, Daniel; Sanchez-Yamagishi, Javier; Watanabe, K.; Taniguchi, T.; Jarillo-Herrero, Pablo; Jacquod, Philippe; LeRoy, Brian J. (Nature Publishing Group, 2012-03)
    The Schrödinger equation dictates that the propagation of nearly free electrons through a weak periodic potential results in the opening of bandgaps near points of the reciprocal lattice known as Brillouin zone boundaries1. ...
  • Etching of Graphene Devices with a Helium Ion Beam 
    Baugher, Britton William Herb; Jarillo-Herrero, Pablo; Lemme, Max C.; Bell, David C.; Williams, James R.; Stern, Lewis A.; Marcus, Charles M. (American Chemical Society (ACS), 2009-09)
    We report on the etching of graphene devices with a helium ion beam, including in situ electrical measurement during lithography. The etching process can be used to nanostructure and electrically isolate different regions ...
  • Long-Wavelength Local Density of States Oscillations Near Graphene Step Edges 
    Xue, Jiamin; Watanabe, K.; Taniguchi, T.; LeRoy, Brian J.; Sanchez-Yamagishi, Javier D.; Jarillo-Herrero, Pablo (American Physical Society (APS), 2012-01)
    Using scanning tunneling microscopy and spectroscopy, we have studied the local density of states (LDOS) of graphene over step edges in boron nitride. Long-wavelength oscillations in the LDOS are observed with maxima ...
  • Measurement of Intrinsic Dirac Fermion Cooling on the Surface of the Topological Insulator Bi2Se3 Using Time-Resolved and Angle-Resolved Photoemission Spectroscopy 
    Wang, Y. H.; Hsieh, D.; Sie, Edbert Jarvis; Steinberg, Hadar; Gardner, Dillon Richard; Lee, Y. S.; Jarillo-Herrero, Pablo; Gedik, Nuh (American Physical Society, 2012-09)
    We perform time- and angle-resolved photoemission spectroscopy of a prototypical topological insulator (TI) Bi[subscript 2]Se[subscript 3] to study the ultrafast dynamics of surface and bulk electrons after photoexcitation. ...
  • Pulling Apart Molecular Magnetism 
    Jarillo-Herrero, Pablo (American Association for the Advancement of Science, 2010-06)
    A single molecule constitutes the ultimate nanometer-scale object through which electronic transport can take place. Being so small, molecules share many characteristics with atoms, such as discrete quantized energy spectra ...
  • Quantum Hall Effect, Screening, and Layer-Polarized Insulating States in Twisted Bilayer Graphene 
    Sanchez-Yamagishi, Javier D.; Taychatanapat, Thiti; Watanabe, Kenji; Taniguchi, Takashi; Yacoby, Amir; Jarillo-Herrero, Pablo (American Physical Society, 2012-02)
    We investigate electronic transport in dual-gated twisted-bilayer graphene. Despite the subnanometer proximity between the layers, we identify independent contributions to the magnetoresistance from the graphene Landau ...
  • Scanning tunnelling microscopy and spectroscopy of ultra-flat graphene on hexagonal boron nitride 
    Xue, Jiamin; Sanchez-Yamagishi, Javier; Bulmash, Daniel S.; Jacquod, Philippe; Deshpande, Aparna; Watanabe, K.; Taniguchi, T.; Jarillo-Herrero, Pablo; LeRoy, Brian J. (Nature Publishing Group, 2011-02)
    Graphene has demonstrated great promise for future electronics technology as well as fundamental physics applications because of its linear energy–momentum dispersion relations which cross at the Dirac point1, 2. However, ...
  • Surface State Transport and Ambipolar Electric Field Effect in Bi2Se3 Nanodevices 
    Steinberg, Hadar; Gardner, Dillon Richard; Lee, Young S.; Jarillo-Herrero, Pablo (American Chemical Society, 2010-11)
    Electronic transport experiments involving the topologically protected states found at the surface of Bi[subscript 2]Se[subscript 3] and other topological insulators require fine control over carrier density, which is ...
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