Fermi gas behavior of a one-dimensional metallic band of Pt-induced nanowires on Ge(001)

Yaji, Koichiro; Mochizuki, Izumi; Kim, S.; Takeichi, Yasuo; Harasawa, Ayumi; Ohtsubo, Yoshiyuki; Fèvre, P. Le; Bertran, F.; Taleb‐Ibrahimi, A.; Kakizaki, Akito; Komori, Fumio

doi:10.1103/physrevb.87.241413

Cited by 22 publications

(28 citation statements)

References 25 publications

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“…18 However, recent ARPES experiments show no BG opens between the metallic bands at the Fermi energy, being an indication that no Peierls transition is present. 21,154 Moreover, Yaji et al 154 suggest that the metallic band would be stable against a Peierls transition, in agreement with the findings of Vanpoucke et al 137 …”

Section: Formation Energy and Electronic Propertiessupporting

confidence: 75%

Modeling 1D structures on semiconductor surfaces: synergy of theory and experiment

Vanpoucke

2014

J. Phys.: Condens. Matter

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Atomic scale nanowires attract enormous interest in a wide range of fields. On the one hand, due to their quasi-one-dimensional nature, they can act as a experimental testbed for exotic physics: Peierls instability, charge density waves, and Luttinger liquid behavior. On the other hand, due to their small size, they are of interest for future device applications in the micro-electronics industry, but also for applications regarding molecular electronics. This versatile nature makes them interesting systems to produce and study, but their size and growth conditions push both experimental production and theoretical modeling to their limits. In this review, modeling of atomic scale nanowires on semiconductor surfaces is discussed focusing on the interplay between theory and experiment. The current state of modeling efforts on Pt-and Au-induced nanowires on Ge (001) is presented, indicating their similarities and differences. Recently discovered nanowire systems (Ir, Co, Sr) on the Ge(001) surface are also touched upon. The importance of scanning tunneling microscopy as a tool for direct comparison of theoretical and experimental data is shown, as is the power of density functional theory as an atomistic simulation approach. It becomes clear that complementary strengths of theoretical and experimental investigations are required for successful modeling of the atomistic nanowires, due to their complexity.

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Section: Formation Energy and Electronic Propertiessupporting

confidence: 75%

Modeling 1D structures on semiconductor surfaces: synergy of theory and experiment

Vanpoucke

2014

J. Phys.: Condens. Matter

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“…The ground state in this case is a 1D conductor [2] with the low-energy properties of a Luttinger liquid [10]. We expect these systems to be quasi-1D conductors also for t ws = 0 and to yield information that could be relevant for understanding the numerous metallic atomic wires studied experimentally [15][16][17][18][19][20][21][22][23][24][25]. Figure 9 shows the variations of the charge distributions C(n) relative to half-filling as a function of the interaction U .…”

Section: B Metallic Wirementioning

confidence: 99%

Correlated atomic wires on substrates. II. Application to Hubbard wires

2017

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In the first part of our theoretical study of correlated atomic wires on substrates, we introduced lattice models for a one-dimensional quantum wire on a three-dimensional substrate and their approximation by quasi-one-dimensional effective ladder models [arXiv:1704.07350]. In this second part, we apply this approach to the case of a correlated wire with a Hubbard-type electronelectron repulsion deposited on an insulating substrate. The ground-state and spectral properties are investigated numerically using the density-matrix renormalization group method and quantum Monte Carlo simulations. As a function of the model parameters, we observe various phases with quasi-one-dimensional low-energy excitations localized in the wire, namely paramagnetic Mott insulators, Luttinger liquids, and spin-1/2 Heisenberg chains. The validity of the effective ladder models is assessed by studying the convergence with the number of legs and comparing to the full three-dimensional model. We find that narrow ladder models accurately reproduce the quasi-onedimensional excitations of the full three-dimensional model but predict only qualitatively whether excitations are localized around the wire or delocalized in the three-dimensional substrate.

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“…Metallic vicinal surfaces have deserved ample attention due to their interest as templates for epitaxial growth and as model systems in the study of heterogeneous catalysis or thermodynamic properties of low dimensional solids [1][2][3][4]. Noble metal surfaces vicinal to a (111) plane have been also the subject of many studies [5][6][7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%