Topographic signatures and manipulations of Fe atoms, CO molecules and NaCl islands on superconducting Pb(111)

• Carl Drechsel,
• Philipp D’Astolfo,
• Jung-Ching Liu,
• Thilo Glatzel,
• Rémy Pawlak and
• Ernst Meyer

Beilstein J. Nanotechnol. 2022, 13, 1–9, doi:10.3762/bjnano.13.1

• between two materials, exhibiting particle–hole symmetry and spin–orbit interaction [8]. Among the most promising platforms to realize MZMs are semiconducting nanowires with large spin–orbit coupling [9][10][11][12] or atomic chains [13][14][15][16][17][18] in proximity to an s-wave superconductor. The

Electromigration-induced directional steps towards the formation of single atomic Ag contacts

• Atasi Chatterjee,
• Christoph Tegenkamp and
• Herbert Pfnür

Beilstein J. Nanotechnol. 2020, 11, 680–687, doi:10.3762/bjnano.11.55

• ; nanostructures; silver; Si substrate; Introduction The transition from a three-dimensional (3D) conductor to single atomic chains or atomic point contacts is an intriguing process, which has been addressed many times over the years. Its many aspects ranging from bulk solid-state physics to the stability of

• various types of clusters, and their attachment to the environment to one-dimensional (1D) properties of atomic chains and contacts have been treated in many different studies [1][2][3][4]. However, this topic is not only of pure scientific interest, it is also relevant in the context of the reliable

• of Ag nanowires, observed with HRTEM [32], where it was reported that Ag mostly forms rod-like structures along the [110] direction, which are unable to form wires. Atomic chains turned out to form only when at least one grain was oriented in the [100] direction. The dominant peak at 1 in Figure 3

Intuitive human interface to a scanning tunnelling microscope: observation of parity oscillations for a single atomic chain

• Sumit Tewari,
• Jacob Bakermans,
• Christian Wagner,
• Federica Galli and
• Jan M. van Ruitenbeek

Beilstein J. Nanotechnol. 2019, 10, 337–348, doi:10.3762/bjnano.10.33

• then choose to make a desired trajectory for better control of the manipulation process. This is especially important in the case of 3D manipulation of single molecules and atomic chains, as there are no predefined accurate trajectories [5][6] that one can set to do those manipulations. Therefore an

• atomic chains are known to show parity oscillations in conductance [8] while going from even to odd number of atoms in the chain. We detect this phenomenon while controllably lifting the chain of atoms and putting it back on the surface. Experimental The experimental setup used here is a custom-built

• chain of Au atoms out of the surface in a controlled manner forming a free-standing atomic chain between the tip and the sample. Some challenges in creating such a free-standing atomic chain using a controlled STM technique are addressed by Tartaglini and co-workers [29]. These atomic chains are ideal

Apparent tunneling barrier height and local work function of atomic arrays

• Neda Noei,
• Alexander Weismann and
• Richard Berndt

Beilstein J. Nanotechnol. 2018, 9, 3048–3052, doi:10.3762/bjnano.9.283

• Cu. In surface areas close to the point of indentation (typical distance 200 nm) long, straight atomic chains are formed on the substrate (Figure 1). While the width of the chains varies, one- and two-atom wide chains are frequently observed. They may be identified from their apparent widths in

• dipole present at flat surfaces and therefore reduces the work function. Atomic chains and single atoms represent stronger corrugations of a surface and therefore are expected to further enhance this effect. The observed trend of Φapp, however, is opposite to this expectation. Φapp may vary when the

Proximity effect in a two-dimensional electron gas coupled to a thin superconducting layer

• Christopher Reeg,
• Daniel Loss and
• Jelena Klinovaja

Beilstein J. Nanotechnol. 2018, 9, 1263–1271, doi:10.3762/bjnano.9.118

• proposals to realize topological superconductivity that have received the most attention to date involve engineering Majorana bound states in either low-dimensional semiconducting systems [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] or in ferromagnetic atomic chains [24][25][26

Revealing the interference effect of Majorana fermions in a topological Josephson junction

• Jie Liu,
• Tiantian Yu and
• Juntao Song

Beilstein J. Nanotechnol. 2018, 9, 520–529, doi:10.3762/bjnano.9.50

• experimentally is related to ferromagnetic atomic chains, which are put on a trivial superconductor [15]. It is believed that MFs can generate a zero-bias conductance peak (ZBP) in the conductance spectrum [16][17][18][19], and indeed the signature of ZBPs has been observed in both systems in tunneling

Zigzag phosphorene nanoribbons: one-dimensional resonant channels in two-dimensional atomic crystals

• Carlos. J. Páez,
• Dario. A. Bahamon,
• Ana L. C. Pereira and
• Peter. A. Schulz

Beilstein J. Nanotechnol. 2016, 7, 1983–1990, doi:10.3762/bjnano.7.189

• systems embedded in a 2D crystal and ongoing research on isolated atomic chains. Results and Discussion Phosphorene zigzag nanoribbons and model calculation: edge-coupling effects The essential atomistic aspects of the structures investigated are depicted in Figure 1. Figure 1a shows a segment of an

• mechanisms involve states at the interior of the nanoribbon, whereas the effect shown here requires one-dimensional states localized at the edges. Concomitant to the development of the fascinating physics of 2D materials, new extreme 1D systems, namely isolated atomic chains, either based on carbon [45] or

• metallic elements [46], have been obtained and characterized, with their properties and possible applications theoretically investigated. The present results suggest a way to obtain effective atomic chains from the edges of a 2D crystal. (a) Illustration of a zigzag phosphorene nanoribbon of width NZ

Invariance of molecular charge transport upon changes of extended molecule size and several related issues

• Ioan Bâldea

Beilstein J. Nanotechnol. 2016, 7, 418–431, doi:10.3762/bjnano.7.37

• dimensional, is described by a Hermitean Hamiltonian matrix, H≡ = H†, whose elements (possibly complex numbers) are arbitrary. Real systems described within the framework provided by Equation 9 and Equation 10 include atomic chains, quantum wires, carbon nanotubes, and (possibly DNA-based) bio- and larger

• within this framework include, e.g., atomic chains, quantum wires, carbon nanotubes, and (possibly DNA-based) bio and large organic molecules. To determine the model parameter values, density functional based tight binding (DFTB) frameworks [18][19][20] represent the state-of-the-art. It is worth

Vibration-mediated Kondo transport in molecular junctions: conductance evolution during mechanical stretching

• David Rakhmilevitch and
• Oren Tal

Beilstein J. Nanotechnol. 2015, 6, 2417–2422, doi:10.3762/bjnano.6.249

• from electron–vibration interaction, to junction stretching. Interestingly, for off-resonance electron–vibration interaction, it was shown that stretching of simple atomic scale junctions such as suspended gold atomic chains or molecular junctions based on n-alkanes can increase the inelastic

Evidence for non-conservative current-induced forces in the breaking of Au and Pt atomic chains

• Carlos Sabater,
• Carlos Untiedt and
• Jan M. van Ruitenbeek

Beilstein J. Nanotechnol. 2015, 6, 2338–2344, doi:10.3762/bjnano.6.241

• are atomic chains of Au and Pt atoms, for which we investigate the distribution of break down voltage values. We observe two distinct modes of breaking for Au atomic chains. The breaking at high voltage appears to behave as expected for regular break down by thermal excitation due to Joule heating

• illustrated in the middle panel of Figure 1 [14][15][16]. The sample wires used here were Pt and Au, have a diameter of 0.1 mm and a purity of 99.995%. The goal of the experiment is to study the current-induced breaking of atomic chains of given length by a procedure that is schematically illustrated in the

• with transmissions smaller than 1, due to limited matching to the wave functions of the bulk electrodes [17][18]. In both cases, Pt and Au, the peak in the conductance histogram is exceptionally strong, which can be understood from the fact that both metals develop atomic chains in the process of

Alternative types of molecule-decorated atomic chains in Au–CO–Au single-molecule junctions

• Zoltán Balogh,
• Péter Makk and
• András Halbritter

Beilstein J. Nanotechnol. 2015, 6, 1369–1376, doi:10.3762/bjnano.6.141

• pure Au monoatomic junctions and atomic chains. We identify molecular precursor configurations with somewhat higher conductance, which are formed prior to single-molecule junctions. According to detailed length analysis two distinct types of molecule-affected chain-formation processes are observed, and

• we compare these results to former theoretical calculations considering bridge- and atop-type molecular configurations where the latter has reduced conductance due to destructive Fano interference. Keywords: atomic chains; break junction; carbon monoxide; correlation analysis; gold; Introduction

• dimensional conductance–displacement histograms (2DCDH) [19][21][22] we are able to narrow down the possible configurations formed during the process of breaking. The comparison of our results with calculations of [29][30][31] implies that the CO molecule can be either incorporated to gold atomic chains

Magnetic properties of self-organized Co dimer nanolines on Si/Ag(110)

• Lisa Michez,
• Kai Chen,
• Fabien Cheynis,
• Frédéric Leroy,
• Alain Ranguis,
• Haik Jamgotchian,
• Margrit Hanbücken and
• Laurence Masson

Beilstein J. Nanotechnol. 2015, 6, 777–784, doi:10.3762/bjnano.6.80

• displayed in Figure 4a using Equation 2 in [33]. We obtain an in-plane MAE of 0.07 meV per Co atom. This value is small compared to the large out-of-plane anisotropy of Co bi-chains on Pt(997) [42] and to the in-plane anisotropy of Co bi-atomic chains grown on Pd(110) [20]. However, a study of the

Chains of carbon atoms: A vision or a new nanomaterial?

• Florian Banhart

Beilstein J. Nanotechnol. 2015, 6, 559–569, doi:10.3762/bjnano.6.58

• of atomic chains has been obtained. Early indications for the existence of chains have also been obtained from electron microscopy images of carbon nanotubes. Sometimes an unexplained fringe in the interior of a tube has been taken as an indication for the presence of an atomic wire located on the

• layers led to growing vacancies and holes. The phenomenon has been confirmed later [39][40]; in some experiments even two parallel chains were observed once a graphene ribbon has been thinned laterally to a certain minimum width. The narrowing graphene ribbons between two holes ended in atomic chains as

• neighboring graphene layers? This was the first indication that atomic chains are more stable than narrow graphene ribbons, at least under an electron beam. Phase contrast images taken by TEM are often difficult to interpret; it is easy to mix up chains with graphene ribbons in side view. In this context, not