Optical manipulation of valley pseudospin
WebValley exciton polarization has been created in the transition metal dichalcogenide monolayers using excitation by circularly polarized light and has been detected both … WebJul 26, 2024 · Here, we show valley-selective control of polariton energies in WS 2 using the optical Stark effect, extending coherent valley manipulation to the hybrid light-matter regime. Ultrafast pump-probe measurements reveal polariton spectra with strong polarization contrast originating from valley-selective energy shifts.
Optical manipulation of valley pseudospin
Did you know?
WebNov 24, 2024 · A variety of strategies have been developed to address the valley pseudospin including optical, electrical, and magnetic methods; nonetheless, they involve either 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 …
WebApr 7, 2024 · Here, the control of layer–valley coherence via strong coupling of valley excitons in bilayer WS2to microcavity photons is demonstrated by exploiting the … 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 …
WebMANIPULATION OF VALLEY PSEUDOSPIN IN … PHYSICAL REVIEW B 101, 125401 (2024) FIG. 2. (a) A schematic diagram of the energy band structure showing the valley-dependent optical selection rule in monolayer TMDs. (b) A schematic diagram showing electronic structures at the K+ and K− valleys in the exchange-coupled WSe 2/CrI 3 heterostructure … WebNov 24, 2024 · 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 external magnetic field, which increases the cost and complexity of the devices.
WebJul 9, 2014 · In transition metal dichalcogenides this valley pseudo-spin, like real spin, is associated with a magnetic moment which underlies the valley-dependent circular dichroism that allows optical generation of valley polarization, intervalley quantum coherence, and the valley Hall effect.
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 … brush for silking cornWebMay 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 … examples of biofuel energyWebThe optical Stark e˙ect has been applied to manipulate the spin/pseudospin in quantum systems, such as atomic quantum gases19, quantum dots20,21, and III V quantum … brush for short haired dogsWebThe valley pseudospin in transition metal dichalcogenide (TMDC) monolayers is a promising degree of freedom for such control, with the optical Stark effect allowing for valley-selective manipulation of energy levels in WS2 and WSe2 using ultrafast optical pulses. examples of biogeography in evolutionWebApr 7, 2024 · Request PDF On Apr 7, 2024, Mandeep Khatoniar and others published Optical Manipulation of Layer–Valley Coherence via Strong Exciton–Photon Coupling in Microcavities Find, read and cite ... examples of biographical interview questionsWebGeneration and manipulation of squeezed states of light in optical networks for quantum communication and computation Maxim Raginsky and Prem Kumar Center for Photonic … examples of biogenic sedimentary rockWebMar 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 … examples of biography about yourself