Graduate School Department /Course /Field Interdisciplinary Environment/Studies on Material Science/Material Properties and Correlations
Undergraduate School Division of Natural Sciences
Other Affiliation
Email takagi.noriaki.7s "(_at_)"
Personal Page Website
Research areas Surface Science, Nano Science, Low-Dimensional Materials
Keywords Scanning Tunneling Microscopy Scanning, Tunneling Spectroscopy, Surface Magnetism, Low-dimensional Materials
Themes Our research group aims at exploring (1) molecular magnetism and strong-correlated phenomena at surfaces and (2) new low-dimensional materials mainly by using low-temperature scanning tunneling microscopy/spectroscopy and the collaborations with first^principles theory and many-body theory groups.
In research (1), we focus on the detection of a spin localized in a single molecule adsorbed on solid surfaces, magnetic anisotropy derived from spin-orbit interaction in magnetic molecules, Kondo effect caused by the many-body entanglement of surface conduction electrons and molecular spins and low-dimensional molecular Kondo lattice.
In research (2), we are investigating electronic properties on graphene and graphene nano-ribbons grown on solid surfaces, silicene (one-atom thick honeycomb lattice consisting of Si atoms) and the relatives, transition metal dichalcogenides MoTe2 and WTe2 that are candidates of Weyl-semimetal in which quasi-particles behave like Weyl fermions.
Major publications “Visualizing Type-II Weyl Points in Tungsten Ditelluride by Quasiparticle Interference”, ACS Nano 11, pp. 11459–11465 (2017).
“Single Molecule Quantum Dot as a Kondo Simulator”, Nat. Commun. 8, 16012 (7 pages) (2017).
“Model Hamiltonian Approach to Magnetic Anisotropy of Iron Phthalocyanine on Solid Surface”, Phys. Rev. B 94, 205402 (15 pages) (2016).
“Surface Phonon Excitation on Clean Metal Surfaces in Scanning Tunneling Microscopy”, Phys. Rev. B 93, 085411 (7 pages) (2016).
“Silicene on Ag(111): Geometric and Electronic Structures of a New Honeycomb Material of Si” (review article), Prog. Surf. Sci. 90, pp.1-20 (2015).
“Substrate-Induced Symmetry Breaking in Silicene”, Phys. Rev. Lett. 110, 076801 (5 pages) (2013).
“Symmetry-Driven Novel Kondo Effect in a Molecule”, Phys. Rev. Lett. 109, 086602 (5 pages) (2012).
“Evolution of Kondo Resonance from a Single Impurity Molecule to the Two-Dimensional Lattice”, Phys. Rev. Lett. 106, 187401 (4 pages) (2011).
“Adsorption-Induced Switching of Magnetic Anisotropy in a Single Iron(II) Phthalocyanine Molecule on Oxidized Cu(110) Surface”, Phys. Rev. Lett. 102, 167203 (4 pages) (2009).
Professional societies/Research and synergic activities
Teaching Areas
  • Undergraduate courses
  • Graduate courses (Master's program)
  • Graduate courses (Doctor's program)
  • Undergraduate courses open to all departments

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