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Gianluca Giovannetti
Researcher at International School for Advanced Studies
Publications - 68
Citations - 9031
Gianluca Giovannetti is an academic researcher from International School for Advanced Studies. The author has contributed to research in topics: Ferroelectricity & Graphene. The author has an hindex of 33, co-authored 65 publications receiving 8092 citations. Previous affiliations of Gianluca Giovannetti include Leiden University & MESA+ Institute for Nanotechnology.
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Doping graphene with metal contacts.
Gianluca Giovannetti,Gianluca Giovannetti,Petr Khomyakov,Geert Brocks,Volodymyr Karpan,J.E. van den Brink,J.E. van den Brink,Paul J. Kelly +7 more
TL;DR: In this article, the authors use density functional theory to study how graphene is doped by adsorption on metal substrates and find that weak bonding on Al, Ag, Cu, Au, and Pt, while preserving its unique electronic structure, can still shift the Fermi level with respect to the conical point by 0:5 eV.
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Substrate-induced band gap in graphene on hexagonal boron nitride: Ab initio density functional calculations
Gianluca Giovannetti,Gianluca Giovannetti,Petr Khomyakov,Geert Brocks,Paul J. Kelly,Jeroen van den Brink,Jeroen van den Brink +6 more
TL;DR: In this article, the electronic structure of a graphene sheet on top of a hexagonal boron nitride (h-BN) substrate was determined using ab initio density functional calculations.
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First-principles study of the interaction and charge transfer between graphene and metals
Petr Khomyakov,Gianluca Giovannetti,Gianluca Giovannetti,P.C. Rusu,Geert Brocks,J. van den Brink,J. van den Brink,J. van den Brink,Paul J. Kelly +8 more
TL;DR: In this paper, the adsorption of graphene on metal substrates using first-principles calculations at the level of density-functional theory was studied, and a simple analytical model was developed that describes the Fermi-level shift in graphene in terms of the metal substrate work function.
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Diisopropylammonium Bromide Is a High-Temperature Molecular Ferroelectric Crystal
Da Wei Fu,Hong-Ling Cai,Yuanming Liu,Qiong Ye,Wen Zhang,Yi Zhang,Xue Yuan Chen,Gianluca Giovannetti,Massimo Capone,Jiangyu Li,Ren-Gen Xiong +10 more
TL;DR: DIPAB is a molecular alternative to perovskite ferroelectrics and ferroelectric polymers in sensing, actuation, data storage, electro-optics, and molecular or flexible electronics and exhibits good piezoelectric response and well-defined ferro electric domains.
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Above-room-temperature ferroelectricity in a single-component molecular crystal
Sachio Horiuchi,Yusuke Tokunaga,Gianluca Giovannetti,Silvia Picozzi,Hirotake Itoh,Ryo Shimano,Reiji Kumai,Yoshinori Tokura,Yoshinori Tokura +8 more
TL;DR: It is demonstrated that application of an electric field can coherently align the molecular polarities in crystalline croconic acid, as indicated by an increase of optical second harmonic generation, and produce a well-defined polarization hysteresis at room temperature.