13 citations · 36 across the 7 of their papers we have counts for
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Topological surface states hybridized with bulk states of Bi-doped PbSb2Te4 revealed in quasiparticle interference
Yuya Hattori, Keisuke Sagisaka, Shunsuke Yoshizawa +2
Topological surface states of Bi-doped PbSb2Te4 [Pb(Bi0.20Sb0.80)2Te4] are investigated through analyses of quasiparticle interference (QPI) patterns observed by scanning tunneling…
Experimental verification of band convergence in Sr and Na codoped PbTe
Yuya Hattori, Shunsuke Yoshizawa, Keisuke Sagisaka +5
Scanning tunneling microscopy and transport measurements have been performed to investigate the electronic structure and its temperature dependence in heavily Sr and Na codoped PbT…
Emergence of metallic surface states and negative differential conductance in thin -FeSi films on Si(001)
Keisuke Sagisaka, Tomoko Kusawake, David Bowler +1
The electronic properties of the surface of -FeSi have been debated for a long while. We studied the surface states of -FeSi films grown on Si(001) substrates using s…
Importance of bulk states for the electronic structure of semiconductor surfaces: implications for finite slabs
Keisuke Sagisaka, Jun Nara, David Bowler
We investigate the influence of slab thickness on the electronic structure of the Si(100)-p(2x2) surface in density functional theory (DFT) calculations, considering both density o…
Single-layer Graphene Nearly 100% Covering an Entire Substrate
Mingsheng Xu, Daisuke Fujita, Keisuke Sagisaka +2
Graphene has recently attracted a great deal of interest in both academia and industry because of its unique electronic and optical properties [1,2], as well as its chemical, therm…