Results 71 to 80 of about 32,608 (295)

Exploring Curvature Effects in Direct‐Written 3D Curved Hollow Magnetic Nanoshells

Advanced Functional Materials, EarlyView.
Fabricated by a hybrid FEBID/CVD method, 3D PtC/Co3Fe core–shell heterostructures with engineered curvature and shell thickness exhibit complex reversal modes with axially symmetric N'eel‐type domain walls. XMCD‐PEEM combined with full‐scale micromagnetic simulations reveal how curvature and thickness govern the domain wall energy landscape and shape ...
Oleksii M. Volkov, Fabrizio Porrati, Florian Kronast, Riccardo Hertel, Pavlo Makushko, Olha Bezsmertna, Alexander Kuprava, Mohamad‐Assaad Mawass, Sven Barth, Michael Huth, Denys Makarov   +10 more
wiley   +1 more source

Enhanced Terahertz Thermoelectricity Via Engineered Van Hove Singularities and Nernst Effect in Moiré Superlattices

Advanced Functional Materials, EarlyView.
Moiré band engineering in graphene/hexagonal boron nitride–based superlattices unlocks van Hove singularities (VHSs) for terahertz (THz) optoelectronics. Tuning the Fermi level near these singularities, associated with secondary neutrality points (SNPs), enhances the photothermoelectric response.
Leonid Elesin, Arthur L. Shilov, Subhajit Jana, Ilya Mazurenko, Pierre A. Pantaleon, Mikhail Kashchenko, Nikita Krivovichev, Viacheslav Dremov, Igor Gayduchenko, Takashi Taniguchi, Kenji Watanabe, Yibo Wang, Kostya S. Novoselov, Dmitry A. Svintsov, Grigory Goltsman, Elena I. Titova, Denis A. Bandurin   +16 more
wiley   +1 more source

Spin waves transport in 3D magnonic waveguides

AIP Advances, 2021
In this work, the propagation of spin waves in translational symmetry broken irregular magnonic waveguide is investigated. The mechanism of the transfer of the magnetic moment and the conversion of spin waves from backward volume to surface waves is ...
A. A. Martyshkin, E. N. Beginin, A. V. Sadovnikov   +2 more
doaj   +1 more source

Detection of Short-Waved Spin Waves in Individual Microscopic Spin-Wave Waveguides Using the Inverse Spin Hall Effect [PDF]

Nano Letters, 2017
The miniaturization of complementary metal-oxide-semiconductor (CMOS) devices becomes increasingly difficult due to fundamental limitations and the increase of leakage currents. Large research efforts are devoted to find alternative concepts that allow for a larger data-density and lower power consumption than conventional semiconductor approaches ...
Brächer, T., Fabre, M., Meyer, T., Fischer, T., Auffret, S., Boulle, O., Ebels, U., Pirro, P., Gaudin, G.   +8 more
openaire   +3 more sources

Spin-dependent phenomena at chiral temporal interfaces

, 2022
Temporally varying electromagnetic media have been extensively investigated recently to unveil new means for controlling light. However, spin-dependent phenomena in such media have not been explored thoroughly.
M. S. Mirmoosa (14358627), M. H. Mostafa (14407533), S. A. Tretyakov (14345358)   +2 more
core   +1 more source

Emergent Topological Magnons and Thermal Hall Effect in 2D Filling‐Enforced Fully Compensated Ferrimagnets

Advanced Functional Materials, EarlyView.
Schematic illustration of ferroelectric‐intercalation‐driven transitions in magnetic configurations and magnonic topological phases, together with the symmetry relations of magnonic Berry curvature. ABSTRACT Magnons in collinear magnets with vanishing net magnetization offer unique advantages for spin transport, including ultrafast dynamics and ...
Yingxi Bai, Bo Yuan, Zhenzhou Guo, Jian Zhang, Ying Dai, Baibiao Huang, Xiaotian Wang, Chengwang Niu, Gang Zhang   +8 more
wiley   +1 more source

Optical-acoustic excitation of broadband terahertz antiferromagnetic spin waves

New Journal of Physics, 2022
We propose an optical-acoustic means to excite broadband terahertz antiferromagnetic (AFM) spin wave in a metal/insulator/antiferromagnet heterostructure.
Jinglin Zhang, Xu Ge, Shaojie Yu, Lu Yu, Diandian Dong, Jianhui Song, Yangyi Chen, JiaPu Li, Wei Luo, Shiheng Liang, Yoshichika Otani, Long You, Xiaofei Yang, Yue Zhang   +13 more
doaj   +1 more source

Omnipolar Magnetic Field Detection by Superlattice‐Based Hall Sensor

Advanced Functional Materials, EarlyView.
Magnetic‐field‐induced electronic switching is demonstrated in unit‐cell‐engineered La0.7Sr0.3MnO3–BiFeO3 superlattices. Distinct substrate terminations modify magnetic and transport properties. Hall resistance measurements show omnipolar, hysteretic anomalous Hall switching above the Curie temperature, arising from Fe─Mn interfacial exchange, enabling
Mark Huijben, Nicolas Gauquelin, Arno Annys, Zhaoliang Liao, Jo Verbeeck, Guus Rijnders, Gertjan Koster   +6 more
wiley   +1 more source

Unlocking Multi‐Valley Energy Pockets and Interface‐Induced Phonon Filtering in InSb Thermoelectrics by Reaction‐Driven Interface Engineering

Advanced Functional Materials, EarlyView.
InSb, a narrow‐bandgap semiconductor with high carrier mobility, is promising for thermoelectric energy conversion but suffers from high lattice thermal conductivity and strong bipolar conduction. Here, in situ interface engineering using Co2O3 nanoprecursors forms hierarchical CoSbx/In2O3/CoSb3 heterostructures that enhance phonon scattering and ...
Jiwu Xin, Xiao Yang, Xiao‐Lei Shi, Chengyun Xu, Xi Ling, Pengyu Zhang, Jinfeng Dong, Yong Du, Haisheng Chen, Ting Zhang, Zhi‐Gang Chen   +10 more
wiley   +1 more source

Coherent THz spin dynamics in antiferromagnets beyond the approximation of the Néel vector

APL Materials
Controlled generation of coherent spin waves with highest possible frequencies and shortest possible wavelengths is a cornerstone of spintronics and magnonics.
F. Formisano, T. T. Gareev, D. I. Khusyainov, A. E. Fedianin, R. M. Dubrovin, P. P. Syrnikov, D. Afanasiev, R. V. Pisarev, A. M. Kalashnikova, J. H. Mentink, A. V. Kimel   +10 more
doaj   +1 more source