Optical manipulation of valley pseudospin
WebApr 30, 2014 · The optical orientation of excitonic valley pseudospin can be represented using the Bloch sphere ( Fig. 3g–i ), where the poles correspond to valley polarization and … WebI am a PhD candidate in the Personal Robotics Lab at the University of Washington. My current research interests are in robotics and AI with a focus on online learning for …
Optical manipulation of valley pseudospin
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WebOct 27, 2024 · To efficiently control and manipulate the valley pseudospin is of paramount importance for valley-based electronics and optoelectronics. A variety of strategies have been developed to address the valley pseudospin including optical, electrical, and magnetic methods; nonetheless, they involve either below liquid-nitrogen… View on PubMed doi.org WebMay 14, 2024 · The valley manipulation is realized via the optical control of the CrI 3 magnetization, which tunes the magnetic exchange field over a range of 20 T. Our results reveal a convenient new path toward the optical control of valley pseudospins and van der Waals magnetic heterostructures. KEYWORDS: Magnetic proximity effect valley 2D …
WebTitle: Manipulation of valley pseudospin in WSe2/CrI3 heterostructures by the magnetic proximity effect Author(s): Hu T., Zhao G., Gao H., Wu Y., Hong J., Stroppa A., Ren W. ... Title: Magneto-Optical Kerr Switching Properties of (CrI3)2and (CrBr3/CrI3) Bilayers WebSep 19, 2016 · In this paper, we demonstrate all-optical control of the valley coherence by means of the pseudomagnetic field associated with the optical Stark effect. Using below …
WebTo efficiently control and manipulate the valley pseudospin is of paramount importance for valley-based electronics and optoelectronics. A variety of strategies have been developed to address the valley pseudospin including optical, electrical, and magnetic methods; nonetheless, they involve either below liquid-nitrogen temperature or an ... WebMonolayer valley semiconductors, such as tungsten diselenide (WSe$_2$), possess valley pseudospin degrees of freedom that are optically addressable but degenerate in energy. Lifting the energy degeneracy by breaking time-reversal symmetry is vital for valley manipulation. This has been realized by directly applying magnetic fields or via pseudo …
WebSep 19, 2016 · Valley exciton polarization has been created in the transition metal dichalcogenide monolayers using excitation by circularly polarized light and has been …
WebJun 10, 2024 · For practical applications, on-chip access to and manipulation of valley pseudospins is paramount, not only to read out but especially to initiate the valley pseudospin state. Here, we experimentally demonstrate the selective on-chip, optical near-field initiation of valley pseudospins at room temperature. chelsea eyeglasses framesflexfin greeceWebTo efficiently control and manipulate the valley pseudospin is of paramount importance for valley-based electronics and optoelectronics. A variety of strategies have been developed … flex finisherWebMar 2, 2024 · Removing valley degeneracy is a necessary condition for manipulating valley degrees of freedom and storing information in future spintronics. Magnetic proximity effect has been demonstrated to be an effective way to introduce exchange interactions, especially in the case of two-dimensional (2D) van der Waals (vdW) heterostructures. We have … chelsea eye clinicWebJul 30, 2024 · Our findings set a comprehensive approach for intrinsic and efficient manipulation of valley pseudospin and spin degree of freedom toward realistic opto-valleytronics devices. KEYWORDS: alloyed TMD monolayers room-temperature valley polarization valley Supporting Information chelsea eye doctorWebOct 14, 2024 · Thus, the spin-valley locking and the interplay of two inequivalent valleys give rise to valley-dependent optical selection rules [17]. Manipulation of valley pseudospin thus becomes a central theme in the eld of valleytronics. Several methods have been proposed to achieve transient valley polarization such as optical excitations [18{20], by chelsea eye ophthalmologyWebNov 16, 2024 · Optical manipulation of layer-valley coherence via strong exciton-photon coupling in microcavities. Coherent control and manipulation of quantum degrees of … flexfin cyprus