Molecular attachment to a microscope tip: inelastic tunneling, Kondo screening, and thermopower

• Rouzhaji Tuerhong,
• Mauro Boero and
• Jean-Pierre Bucher

Beilstein J. Nanotechnol. 2019, 10, 1243–1250, doi:10.3762/bjnano.10.124

• junction conductance of about 200% (see Figure 2e). Such a large conductance increment supports the strong electron–vibration interaction of the MnPc molecule suspended in the STM gap, similar to the one reported for CO2 molecule in the platinum break junction [31][32]. Furthermore, the spectral intensity

Electronic conduction during the formation stages of a single-molecule junction

• Atindra Nath Pal,
• Tal Klein,
• Ayelet Vilan and
• Oren Tal

Beilstein J. Nanotechnol. 2018, 9, 1471–1477, doi:10.3762/bjnano.9.138

• junction realizations, since electron–vibration interaction is not always efficient. The presented examples represent the cases in which maximal step height was found for junctions with conductance below and above 1 G0 (181 cases were examined). The similar step height (0.05 ± 0.01 G0) in both cases infers

Charge and heat transport in soft nanosystems in the presence of time-dependent perturbations

• Alberto Nocera,
• Carmine Antonio Perroni,
• Vincenzo Marigliano Ramaglia and
• Vittorio Cataudella

Beilstein J. Nanotechnol. 2016, 7, 439–464, doi:10.3762/bjnano.7.39

• reported in experimental measurements [9], the effects of the electron–vibration interaction are not negligible in junctions with C60 molecules. Within these assumptions, in Equation 1, the interaction Hamiltonian reduces to the same interaction term of the single impurity Anderson–Holstein model [2] and

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

• ; electron–phonon interactions; Kondo effect; molecular junctions; vibrations; Introduction Molecular junctions are an attractive test-bed for electronic effects such as Kondo physics [1][2][3][4][5] and electron–vibration interaction [6][7][8][9][10]. These junctions are composed of individual molecules

• presence of electron–vibration interaction, this picture can change considerably. At a sufficiently high voltage the injected electrons have the necessary energy to excite a certain vibration mode of the molecular junction (). This inelastic process promotes a vibration-mediated Kondo transport for which

• energy. The vibration-mediated Kondo effect was mentioned as a possible origin for finite bias peaks that were detected in various molecular junctions [11][12][13]. This effect provides an attractive way to study electron–vibration interaction in the presence of a many-body electronic system. However

Thermoelectricity in molecular junctions with harmonic and anharmonic modes

• Bijay Kumar Agarwalla,
• Jian-Hua Jiang and
• Dvira Segal

Beilstein J. Nanotechnol. 2015, 6, 2129–2139, doi:10.3762/bjnano.6.218

• , which we provide here for the HO and the AH mode models, valid under the approximation of weak electron–vibration interaction. We explored linear-response properties, the electrical and thermal conductances G and Σ, as well as the Seebeck coefficient S, the thermoelectric figure of merit ZT, and the

• function for the AH model was reached from a master equation calculation [7][43]. Both treatments are perturbative to second order in the electron–vibration interaction. We take into account all electron scattering processes that are facilitated by the absorption or emission of a single quantum ω0. It is

• present model. Given its simplicity and transparency, it is of interest to extend this method and examine higher order processes in perturbation theory, to gain further insight on the role of electron–vibration interaction in molecular conduction. (vii) Efficiency fluctuations. We focused here only on

Large-voltage behavior of charge transport characteristics in nanosystems with weak electron–vibration coupling

• Tomáš Novotný and
• Wolfgang Belzig

Beilstein J. Nanotechnol. 2015, 6, 1853–1859, doi:10.3762/bjnano.6.188

• particular, we find that for large voltages the k-th cumulant of the current grows as V2k to be contrasted with the linear dependence in case of more strongly externally damped and thus thermalized vibrational modes. Keywords: electron-vibration interaction; full counting statistics; large-voltage behavior