Results 61 to 70 of about 87,852 (308)

Spin phenomena in semiconductor quantum dots [PDF]

, 2013
This thesis discusses development of new semiconductor quantum dot (QD) devices and materials. Optical spectroscopy of single QDs is employed in order to investigate electronic structure and magnetic properties of these materials.
Puebla Nunez, Jorge Luis
core  

Long‐Range Coordination Environment Modulates Single‐Atom Local States and Systemic Impact on CO2 Photoconversion

Advanced Functional Materials, EarlyView.
Terminal groups on Cu porphyrins modulate the electronic states of single‐atom Cu centers through a long‐range electronic effect, without altering the Cu coordination geometry. Meanwhile, a multi‐descriptor framework is established that incorporates porphyrin regulation, hybrid catalyst properties, and CO2 photoreduction capabilities.
Yi Zhang, Jintao Dong, Xiahe Chen, Xiyang Wang, Tiange Wei, Yue Zhu, Tai‐Sing Wu, Yun‐Fang Yang, Shao‐Yuan Leu, Keke Wang, Yuanbin She, Huaming Li, Jiexiang Xia, Molly Meng‐Jung Li   +13 more
wiley   +1 more source

Spin detection at elevated temperatures using a driven double quantum dot

, 2010
We consider a double quantum dot in the Pauli blockade regime interacting with a nearby single spin. We show that under microwave irradiation the average electron occupations of the dots exhibit resonances that are sensitive to the state of the nearby ...
Wabnig, J, Lovett, Brendon, Lovett, B. W., Briggs, G. A. D., Jefferson, JH, Giavaras, G., Giavaras, G, G. A. D. Briggs, J. Wabnig, G. Giavaras, B. W. Lovett, Briggs, GAD, Jefferson, J. H., Wabnig, J., J. H. Jefferson   +14 more
core   +1 more source

Thermally activated charge fluctuations in GaAs double quantum dots [PDF]

, 2014
In this thesis, laterally defined GaAs quantum dots and double quantum dots are investigated by means of real-time charge sensing. A quantum dot charge sensor, adjacent to the investigated double dot system, detects single electron tunneling with ...
Biesinger, Daniel Erich Fridolin
core   +1 more source

Unraveling the Electronic Structure of Silicon Vacancy Centers in 4H‐SiC

Advanced Functional Materials, EarlyView.
The electronic structure of the silicon vacancy in 4H‐SiC is probed via transient absorption spectroscopy, uncovering previously inaccessible excited states of the quartet and doublet spin channels, including the V2' transition. In combination with theoretical analysis, a comprehensive picture of the electronic structure is established.
Ali Tayefeh Younesi, Minh Tuan Luu, Christopher Linderälv, Vytautas Žalandauskas, Marianne Etzelmüller Bathen, Nguyen Tien Son, Takeshi Ohshima, Gergő Thiering, Lukas Razinkovas, Ronald Ulbricht   +9 more
wiley   +1 more source

Template‐Confined Synthesis of Shape‐Engineered Single‐Crystal Gold Microplates in Lithographically‐Defined Polymeric Patterns

Advanced Functional Materials, EarlyView.
Single‐crystal gold microplates are high‐performance nanomaterials with an impressive wafer‐based application space. Progress has, however, been tempered by an inability to exert synthetic control over microplate size, shape, and positioning. In this work, control over these parameters is demonstrated using a seed‐mediated synthesis that both confines ...
Debasish Panda, Md Rashed Nizam, Walker J. Tuff, Collin C. Wyant, Maksym Zhukovskyi, Matthew R. Rosenberger, Botond Sánta, Edward C. Kinzel, Robert A. Hughes, Svetlana Neretina   +9 more
wiley   +1 more source

Giant unusual anisotropic magnetoresistance enabled by hole-electron resonance in van der Waals heterostructures

Nature Communications
The hole-electron resonance in two-dimensional WTe2 dynamically screens the built-in electric field, disrupting the scattering equilibrium constraints of conventional electron transport.
Qian Chen, Yuxin Tian, Lei Wang, Chang Niu, Wei Jiang, Hainan Mao, Ya Zhai, Zhiyan Jia, Yong Jiang, Ke Xia   +9 more
doaj   +1 more source

Special Issue: Electron Paramagnetic Resonance

Magnetochemistry, 2019
Electron paramagnetic resonance (EPR) is the tool of choice to probe and understand the dynamics of electron spin [...]
Sylvain Bertaina, Hervé Vezin
doaj   +1 more source

Designed Lewis Acid–Base Passivation for High Performance Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
ABSTRACT Silicon's high cost and long energy payback time remain major barriers to the global expansion of solar power. In contrast, metal–halide perovskites offer abundant, solution‐processable absorbers, and have achieved efficiencies of 25%–30%, positioning them as strong competitors to silicon.
Afna Manaf, Hiba Shahulhameed, Bhabani Sankar Swain, Shengzhong (Frank) Liu, Adel Najar   +4 more
wiley   +1 more source

Electron paramagnetic resonance of some 3d ions in magnesium oxide [PDF]

, 1986
Electron paramagnetic resonance (E.P.R.) and reflection high energy electron diffraction (RHEED) techniques have been used to study the distribution of iron, chromium and manganese in lightly doped magnesium oxide (MgO) single crystals and powders. E.P.R.
Skinner, A.R
core