Results 71 to 80 of about 377,401 (276)
High Charge Carrier Mobility in Non‐Conjugated 3D Covalent Organic Frameworks
Advanced Materials, EarlyView.A non‐conjugated 3D COF constructed via boronate ester linkages from tetraphenylene and pyrene‐based monomers is reported, which exhibits a high charge carrier mobility of 14 ± 1 cm2 V−1 s−1. ABSTRACT π‐Conjugation, π–π stacking, and long‐range order play a central role in determining charge transport efficiency in organic materials.
Joaquín Almarza +11 more
wiley +1 more source
Stochastic hamiltonian dynamical systems [PDF]
Reports on Mathematical Physics, 2008 46 pages. A converse to the Critical Action Principle has been added. The discussion on conserved quantities has been extended and linked to the study of the stability of equilibria of the solution ...
Lázaro-Camí, Joan-Andreu +1 more
openaire +2 more sources
Gapless Superconductivity From Extremely Dilute Magnetic Disorder in 2H‐NbSe2‐xSx
Advanced Materials, EarlyView.We demonstrate that 2H‐NbSe2‐xSx hosts gapless superconductivity at unexpectedly low magnetic impurity concentrations. Combining STM, Bogoliubovde Gennes simulations, DFT, and quasiparticle interference, we comprehensively study the development of gapless behavior and show that SeS substitution reshapes the band structure, enhances nesting, and drives ...
Jose Antonio Moreno +16 more
wiley +1 more source
Riemannian quantum circuit optimization based on matrix product operators [PDF]
QuantumWe significantly enhance the simulation accuracy of initial Trotter circuits for Hamiltonian simulation of quantum systems by integrating first-order Riemannian optimization with tensor network methods.
Isabel Nha Minh Le +2 more
doaj +1 more source
On switched Hamiltonian systems [PDF]
, 2002 In this paper we study the well-posedness and stability of a class of switched linear passive systems. Instrumental in our approach is the result, also of interest in its own right, that any linear passive input-state-output system with strictly positive
Gerritsen, K.M. +2 more
core +1 more source
, 2002 For finite dimensional Hamiltonian systems derived from 1+1 dimensional integrable systems, if they have Lax representations, then the Lax operator creates a set of conserved integrals.
Zhou, Zixiang
core +2 more sources
Advanced Materials, EarlyView.The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley +1 more source
Advanced Materials, EarlyView.Uniform monolayer Cr2Ge2Te6 films are achieved on Si substrates by molecular beam epitaxy. Intrinsic ferromagnetism with perpendicular magnetic anisotropy is established in the films by anomalous Hall effect and superconducting quantum interference device measurements, albeit with strong magnetic fluctuations characteristic of its 2D nature.
Pengfei Ji +15 more
wiley +1 more source
Efficient Quantum Pseudorandomness with Nearly Time-Independent Hamiltonian Dynamics
Physical Review X, 2017 Quantum randomness is an essential key to understanding the dynamics of complex many-body systems and also a powerful tool for quantum engineering. However, exact realizations of quantum randomness take an extremely long time and are infeasible in many ...
Yoshifumi Nakata +3 more
doaj +1 more source
Hamiltonian tomography of dissipative systems under limited access: A biomimetic case study [PDF]
, 2011 The identification of parameters in the Hamiltonian that describes complex many-body quantum systems is generally a very hard task. Recent attention has focused on such problems of Hamiltonian tomography for networks constructed with two-level systems ...
Burgarth, Daniel +4 more
core +1 more source