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A new azobenzene-thiophene molecular switch is designed, synthesized and used to form self-assembled monolayers (SAM) on gold. An "on/off" conductance ratio up to 7x1E3 (with an average value of 1.5x1E3) is reported. The "on" conductance…

By using first-principles calculations, we investigated the effects of graphene/boron nitride (BN) encapsulation, surface functionalization by metallic elements (K, Al, Mg and typical transition metals) and molecules…

Materials Science · Physics 2018-04-17 Andrey A. Kistanov , Yongqing. Cai , Kun Zhou , Sergey V. Dmitriev , Yong-Wei Zhang

We study dynamic nonequilibrium electron charging phenomena in ballistic molecular devices at room temperature that compromise their response to bias and whose nature is evidently distinguishable from static Schottky-type potential…

Mesoscale and Nanoscale Physics · Physics 2008-05-13 Ioannis Deretzis , Antonino La Magna

We report on the observation of Kondo and split Kondo peaks in single-molecule transistors containing a single spin transition molecule with a Fe2+ ion. Coulomb blockade characteristics reveal a double quantum dot behavior in a parallel…

Mesoscale and Nanoscale Physics · Physics 2010-04-27 A. Bernand-Mantel , J. S. Seldenthuis , A. Beukman , H. S. J. van der Zant , V. Meded , R. Chandrasekhar , K. Fink , M. Ruben , F. Evers

We present a theoretical study of spin-dependent transport through molecular wires bridging ferromagnetic metal nanocontacts. We extend to magnetic systems a recently proposed model that provides a em quantitative explanation of the…

Mesoscale and Nanoscale Physics · Physics 2009-11-07 Eldon Emberly , George Kirczenow

We report on dynamical quantum transport simulations for realistic molecular devices based on an approximate formulation of time-dependent Density Functional Theory with open boundary conditions. The method allows for the computation of…

Mesoscale and Nanoscale Physics · Physics 2013-09-16 Christian Oppenländer , Björn Korff , Thomas A. Niehaus

The extraordinary electronic properties of graphene, such as its continuously gate-variable ambipolar field effect and the resulting steep change in resistivity, provided the main thrusts for the rapid advance of graphene electronics. The…

In condensed matter physics many features can be understood in terms of their topological properties. Here we report evidence of a topological quantum transition driven by the charge-phonon coupling in the spinless Haldane model on a…

Strongly Correlated Electrons · Physics 2019-07-31 L. M. Cangemi , A. S. Mishchenko , N. Nagaosa , V. Cataudella , G. De Filippis

A microscopic theory for the interaction of carriers with LO phonons is used to study the ultrafast carrier dynamics in nitride-based semiconductor quantum dots. It is shown that the efficiency of scattering processes is directly linked to…

Mesoscale and Nanoscale Physics · Physics 2009-11-11 J. Seebeck , T. R. Nielsen , P. Gartner , F. Jahnke

Reproducibility and quantization in quantum spin Hall platforms is a persisting challenge, limiting their use in hybrid realizations of topological superconductivity. We report robust and reproducible quantized transport in a graphene…

Controlling electronic transport through a single-molecule junction is crucial for molecular electronics or spintronics. In magnetic molecular devices, the spin degree-of-freedom can be used to this end since the magnetic properties of the…

Quantum transport of charge or energy in networks with discrete sites is central to diverse quantum technologies, from molecular electronics to light harvesting and quantum opto-mechanical metamaterials. A one dimensional network can be…

Quantum Physics · Physics 2024-02-13 Ajith Ramachandran , Alexander Eisfeld , Sebastian Wüster , Jan-Michael Rost

Perovskite quantum dots (pQDs) are promising materials for optoelectronic and photocatalytic applications due to their unique optical properties. To enhance charge carrier extraction or injection donor/acceptor molecules can be tethered to…

We propose and analyze a new way of using $\pi$ stacking to design molecular junctions that either enhance or suppress a phononic heat current, but at the same time remain conductors for an electric current. Such functionality is highly…

Mesoscale and Nanoscale Physics · Physics 2015-02-10 Gediminas Kiršanskas , Qian Li , Karsten Flensberg , Gemma C. Solomon , Martin Leijnse

It is understood that molecular conjugation plays an important role in charge transport through single-molecule junctions. Here, we investigate electron transport through an anthraquinone based single-molecule three-terminal device. With…

Mesoscale and Nanoscale Physics · Physics 2016-05-19 M. Koole , J. M. Thijssen , H. Valkenier , J. C. Hummelen , H. S. J. van der Zant

Organic dopants are frequently used to surface-dope inorganic semiconductors. The resulted hybrid inorganic-organic materials have a crucial role in advanced functional materials and semiconductor devices. In this article, we study charge…

Materials Science · Physics 2017-08-01 Xiaoming Wang , Keivan Esfarjani , Mona Zebarjadi

Ionically-conducting plastic crystals are possible candidates for solid-state electrolytes in energy-storage devices. Interestingly, the admixture of larger molecules to the most prominent molecular PC electrolyte, succinonitrile, was shown…

Soft Condensed Matter · Physics 2017-09-25 D. Reuter , C. Geiß , P. Lunkenheimer , A. Loidl

We propose a measurement-based FTQC (MB-FTQC) architecture for high-connectivity platforms such as trapped ions and neutral atoms. The key idea is to use verified logical ancillas combined with Knill's error-correcting teleportation,…

Quantum Physics · Physics 2025-12-10 Yohei Ibe , Yutaka Hirano , Yasuo Ozu , Toru Kawakubo , Keisuke Fujii

One of the new discoveries in quantum biology is the role of Environment Assisted Quantum Transport (ENAQT) in excitonic transport processes. In disordered quantum systems transport is most efficient when the environment just destroys…

Mesoscale and Nanoscale Physics · Physics 2015-03-03 Gabor Vattay , Istvan Csabai

Donors in silicon, conceptually described as hydrogen atom analogues in a semiconductor environment, have become a key ingredient of many "More-than-Moore" proposals such as quantum information processing [1-5] and single-dopant electronics…

Mesoscale and Nanoscale Physics · Physics 2015-04-07 M. Fernando Gonzalez-Zalba , André Saraiva , Dominik Heiss , Maria J. Calderón , Belita Koiller , Andrew J. Ferguson