Magnetic Proximity Effects in Transition-Metal Dichalcogenides: Converting Excitons

Abstract

The two-dimensional character and reduced screening in monolayer transition-metal dichalcogenides (TMDs) lead to the ubiquitous formation of robust excitons with binding energies orders of magnitude larger than in bulk semiconductors. Focusing on neutral excitons, bound electron-hole pairs, that dominate the optical response in TMDs, it is shown that they can provide fingerprints for magnetic proximity effects in magnetic heterostructures. These proximity effects cannot be described by the widely used single-particle description, but instead reveal the possibility of a conversion between optically inactive and active excitons by rotating the magnetization of the magnetic substrate. With recent breakthroughs in fabricating Mo- and W-based magnetic TMD-heterostructures, this emergent optical response can be directly tested experimentally.

10 pages, pages 7-10 contain supplemental material

References in corpus (14)

• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Superconducting proximity effect and Majorana fermions at the surface of a topological insulator
• The Valley Hall Effect in MoS2 Transistors
• k.p theory for two-dimensional transition metal dichalcogenide semiconductors
• Valley Zeeman Effect in Elementary Optical Excitations of a Monolayer WSe2
• Breaking of valley degeneracy by magnetic field in monolayer MoSe2
• Proximity-induced ferromagnetism in graphene revealed by anomalous Hall effect
• Magnetic Insulator-Induced Proximity Effects in Graphene: Spin Filtering and Exchange Splitting Gaps
• Brightening of dark excitons in monolayers of semiconducting transition metal dichalcogenides
• Integration of the Ferromagnetic Insulator EuO onto Graphene
• Excitonic valley effects in monolayer WS${}_2$ under high magnetic fields
• Bias induced up to 100% spin-injection and detection polarizations in ferromagnet/bilayer-hBN/graphene/hBN heterostructures
• Marrying excitons and plasmons in monolayer transition-metal dichalcogenides

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• Intrinsic Ferromagnetism in Electrenes
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• Giant Spin-valley Polarization and Multiple Hall Effect in Functionalized Bi Monolayers
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• Tunable spin-polarized edge currents in proximitized transition metal dichalcogenides
• Giant effective Zeeman splitting in a monolayer semiconductor realized by spin-selective strong light-matter coupling
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• Large exciton binding energies in MnPS${}_3$ as a case study of vdW layered magnet
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• Optically Probing Tunable Band Topology in Atomic Monolayers
• Strong manipulation of the valley splitting upon twisting and gating in MoSe${}_2$/CrI${}_3$ and WSe${}_2$/CrI${}_3$ van der Waals heterostructures
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• Excitonic Magneto-Optical Kerr Effect in 2D Transition Metal Dichalcogenides Induced by Spin Proximity
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• Theoretical methods for excitonic physics in two-dimensional materials
• Spin-orbit-proximitized ferromagnetic metal by monolayer transition metal dichalcogenide: Atlas of spectral functions, spin textures and spin-orbit torques in Co/MoSe${}_2$, Co/WSe${}_2$ and Co/TaSe${}_2$ heterostructures
• Pressure-induced Superconductivity and Topological Quantum Phase Transitions in the Topological Semimetal ZrTe2
• Electric Dipole Spin Resonance of 2D Semiconductor Spin Qubits
• Switch effect and $0$-$\pi$ transition in Ising superconductor Josephson junctions
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• Excitonic magneto-optics in monolayer transition metal dichalcogenides: From nanoribbons to two-dimensional response
• Magnon-exciton proximity coupling at a van der Waals heterointerface
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• Topological Interlayer Superconductivity in a van der Waals Heterostructure
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• Effect of spin-dependent tunneling and intervalley scattering in magnetic-semiconductor van der Waals heterostructures on exciton and trion polarization
• Many-body description of two-dimensional van der Waals ferroelectric $\alpha -$In${}_2$Se${}_3$