Results 41 to 50 of about 48,619 (333)

Pentagonal 2D Altermagnets: Material Screening and Altermagnetic Tunneling Junction Device Application

Advanced Functional Materials, EarlyView.
From a database of 170 pentagonal 2D materials, 4 candidates exhibiting altermagnetic ordering are screened. Furthermore, the spin‐splitting and unconventional boundary states in the pentagonal 2D altermagnetic monolayer MnS2 are investigated. A MnS2‐based altermagnetic tunneling junction is designed and, through ab initio quantum transport simulations,
Jianhua Wang, Xingyue Yang, Zongmeng Yang, Jing Lu, Pin Ho, Wenhong Wang, Yee Sin Ang, Zhenxiang Cheng, Shibo Fang   +8 more
wiley   +1 more source

Tunnelling amplitudes through localised external potentials from Feynman diagram summation

European Physical Journal C: Particles and Fields
Currently there is no general theory of quantum tunnelling of a particle through a potential barrier which is compatible with QFT. We present a complete calculation of tunnelling amplitudes for a scalar field for some simple potentials using quantum ...
Rosemary Zielinski, Cédric Simenel, Patrick McGlynn   +2 more
doaj   +1 more source

Direct Approach to Quantum Tunneling

Physical Review Letters, 2016
5 pages, 2 ...
Andreassen, Anders, Farhi, David, Frost, William, Schwartz, Matthew D.   +3 more
openaire   +4 more sources

Quantum tunnelling and decoherence in nanomagnets [PDF]

, 2006
Starting from the observation that at very low temperatures an isolated nanomagnet can be treated as an effective two-state system, we introduce a model to study quantum tunnelling and decoherence phenomena.
Bozat, Ozgur, Bozat, Özgür, Gedik, Zafer   +2 more
core   +1 more source

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

Advanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu, Ritam Chakraborty, Biao Yang, Dennis Meier, Joachim Reichert, Svetlana Klyatskaya, Mario Ruben, Shobhana Narasimhan, Johannes V. Barth, Anthoula C. Papageorgiou   +9 more
wiley   +1 more source

Ultra-thin van der Waals crystals as semiconductor quantum wells

Nature Communications, 2020
A plethora of solid-state nanodevices rely on engineering the quantization of electrons in quantum wells. Here, the authors leverage the thickness of exfoliated 2D crystals to control the quantum well dimensions in few-layer semiconductor InSe and ...
Johanna Zultak, Samuel J. Magorrian, Maciej Koperski, Alistair Garner, Matthew J. Hamer, Endre Tóvári, Kostya S. Novoselov, Alexander A. Zhukov, Yichao Zou, Neil R. Wilson, Sarah J. Haigh, Andrey V. Kretinin, Vladimir I. Fal’ko, Roman Gorbachev   +13 more
doaj   +1 more source

Quantum and Classical Dissipative Effects on Tunnelling in Quantum Hall Bilayers

, 2005
We discuss the interplay between transport and dissipation in quantum Hall bilayers. We show that quantum effects are relevant in the pseudospin picture of these systems, leading either to direct tunnelling currents or to quantum dissipative processes ...
A. V. Chubukov, C. M. Bender, Derek K. K. Lee, Nigel R. Cooper, Robert L. Jack, S. M. Girvin, T. Nakajima, Z. F. Ezawa   +7 more
core   +1 more source

A mechanical model of tunnelling [PDF]

, 2008
It is shown how the model which was introduced by Mouchet (2008 Eur. J. Phys.
Mouchet, Amaury
core   +4 more sources

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source

Non-KAM classical chaos topology for electrons in superlattice minibands determines the inter-well quantum transition rates

Scientific Reports
We investigate the quantum-classical correspondence for a particle tunnelling through a periodic superlattice structure with an applied bias voltage and an additional tilted harmonic oscillator potential.
F. Wang, M. T. Greenaway, A. G. Balanov, T. M. Fromhold   +3 more
doaj   +1 more source