Results 81 to 90 of about 19,972 (281)

Mid-wavelength infrared high operating temperature pBn photodetectors based on type-II InAs/InAsSb superlattice

AIP Advances, 2020
A high operating temperature mid-wavelength infrared pBn photodetector based on the type-II InAs/InAsSb superlattice on a GaSb substrate has been demonstrated.
Donghai Wu, Jiakai Li, Arash Dehzangi, Manijeh Razeghi   +3 more
doaj   +1 more source

s‐Orbital Mediated Metavalent Bonding Enables State‐Of‐The‐Art n‐Type AgBiSe2 Thermoelectrics

Advanced Functional Materials, EarlyView.
Metavalent bonding (MVB) underpins the exceptional property portfolio of chalcogenides. Typical MVB solids are mainly found in p‐bonded systems. This work reveals that MVB can also be formed with s‐p orbital interactions upon forming a single‐electron σ‐bond, as exemplified in AgBiSe2.
Binrong Huang, Dasol Kim, Yuan Yu, Jinxuan Zhong, Jianbo Zhu, Yaoling Shen, Yu Guo, Moran Wang, Jiawei Huang, Tu Lyu, Nan Lin, Yongsheng Zhang, Matthias Wuttig, Lipeng Hu   +13 more
wiley   +1 more source

Effect of external electric field on the charge density waves in one dimensional Hubbard superlattices

, 2008
We have studied the ground state of the one dimensional Hubbard superlattice structures with different unit cell sizes in the presence of electric field.
Bibhas Bhattacharyya, Dutta S, Dutta S, Jayeeta Chowdhury, Pati S K, S N Karmakar   +5 more
core   +1 more source

Multibit Ferroelectric HfZrO Memcapacitor for Non‐Volatile Analogue Memory and Reconfigurable Electronics

Advanced Functional Materials, EarlyView.
Ferroelectric memcapacitors enable non‐volatile, voltage‐programmable capacitance tuning for adaptive electronics. A TiN/HfZrO/TiN device stack demonstrates more than eight stable capacitance states within a 24 pF memory window in compact 60 ×$\times$ 60 μm2$\umu{\rm m}^{2}$ devices at low operating voltages.
Deepika Yadav, Spyros Stathopoulos, Patrick Foster, Andreas Tsiamis, Mohamed Awadein, Hannah Levene, Themis Prodromakis   +6 more
wiley   +1 more source

Phase transitions in Ising magnetic films and superlattices

, 1999
Within the framework of mean field theory, we examine the phase transitions in Ising magnetic films and superlattices. By transfer matrix method, we derive two general nonlinear equations for phase transition temperatures of Ising magnetic films and ...
Aguilera-Granja, Balcerzak, Barnás, Benyoussef, Benyoussef, Binder, Binder, Camley, Chen, Guo-Zhen Yang, Hai, Hinchey, Hinchey, Jiang, Ma, Mills, Morkowsky, Ortı́z-Saavedra, Rau, Rau, Saber, Saber, Sarmento, Sarmento, Sarmento, Shanlov, Shao-Hua Pan, Sy, Weller, Xiao-Guang Wang, Yariv, Zheng   +31 more
core   +1 more source

Interband polarized absorption in InP polytypic superlattices [PDF]

, 2014
Recent advances in growth techniques have allowed the fabrication of semiconductor nanostructures with mixed wurtzite/zinc-blende crystal phases. Although the optical characterization of these polytypic structures is well eported in the literature, a ...
Campos, T., Junior, P. E. Faria, Sipahi, G. M.   +2 more
core   +2 more sources

Tailoring K+/Vacancy Disordered Layered Oxide via Charge Engineering for Stabilizing High‐Performance Potassium‐Ion Batteries

Advanced Functional Materials, EarlyView.
With a charge‐ion coupling engineering strategy, a K+/vacancy disordered K0.5Mn0.8Co0.1Ti0.1O2 material has been designed. The targeted transition metal doping disrupts charge ordering and inducing K+/vacancy disordering, thereby enabling rapid K+ diffusion through interconnected channels and a stable solid‐solution reaction mechanism.
Yongfeng Jia, Xuanpeng Wang, Jiashen Meng, Lujun Zhu, Fanjie Xia, Hong Wang, Fang Liu, Xiao Zhang, Quanquan Pang, Jian Wang, Zhitong Xiao   +10 more
wiley   +1 more source

Stability properties of periodically driven overdamped pendula and their implications to physics of semiconductor superlattices and Josephson junctions [PDF]

, 2010
We consider the first order differential equation with a sinusoidal nonlinearity and periodic time dependence, that is, the periodically driven overdamped pendulum.
Abramowitz M., Aslamazov L. G., Bumyalene S., Bumyalene S., Jukka Isohätälä, Kirill N. Alekseev, Kuznetsov Y., Kuz’min L. S., Kuz’min L. S., Likharev K., Sagdeev R. Z.   +10 more
core   +2 more sources

Resolving the Structural Duality of Graphene Grain Boundaries

Advanced Materials, EarlyView.
Cantilever ncAFM resolves the atomic structure of grain boundaries in graphene, revealing coexisting stable and metastable types. Both contain pentagon/heptagon defects, but metastable GBs show irregular geometries. Modeling shows metastable GBs form under compression, exhibiting vertical corrugation, while stable GBs are flat.
Haojie Guo, Emiliano Ventura‐Macías, Mariano D. Jiménez‐Sánchez, Nicoleta Nicoara, Pierre Mallet, Jean‐Yves Veuillen, Vincent T. Renard, Antonio J. Martínez‐Galera, Pablo Pou, Julio Gómez‐Herrero, Rubén Pérez, Iván Brihuega   +11 more
wiley   +1 more source

Electronic and Magnetic Reconstructions in Manganite Superlattices

, 2013
We investigate the electronic reconstruction at the interface between ferromagnetic metallic (FM) and antiferromagnetic insulating (AFI) manganites in superlattices using a two-orbital double-exchange model including superexchange interactions, Jahn ...
Kampf, Arno P., Pradhan, Kalpataru
core   +1 more source