Search Results - "Bratschitsch, Rudolf"
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Electroluminescence from multi-particle exciton complexes in transition metal dichalcogenide semiconductors
Published in Nature communications (12-04-2019)“…Light emission from higher-order correlated excitonic states has been recently reported in hBN-encapsulated monolayer WSe 2 and WS 2 upon optical excitation…”
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Dark exciton anti-funneling in atomically thin semiconductors
Published in Nature communications (10-12-2021)“…Transport of charge carriers is at the heart of current nanoelectronics. In conventional materials, electronic transport can be controlled by applying electric…”
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Spintronic GdFe/Pt THz emitters
Published in Applied physics letters (07-10-2019)“…We present a spintronic terahertz emitter based on a ferrimagnetic gadolinium-iron alloy (GdxFe1−x) and platinum (Pt). We measure the magnetic-field-dependent…”
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Trion fine structure and coupled spin–valley dynamics in monolayer tungsten disulfide
Published in Nature communications (02-09-2016)“…Monolayer transition-metal dichalcogenides have recently emerged as possible candidates for valleytronic applications, as the spin and valley pseudospin are…”
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Nanoscale Positioning of Single-Photon Emitters in Atomically Thin WSe2
Published in Advanced materials (Weinheim) (01-09-2016)“…Single‐photon emitters in monolayer WSe2 are created at the nanoscale gap between two single‐crystalline gold nanorods. The atomically thin semiconductor…”
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Biaxial strain tuning of the optical properties of single-layer transition metal dichalcogenides
Published in NPJ 2D materials and applications (25-05-2017)“…Since their discovery, single-layer semiconducting transition metal dichalcogenides have attracted much attention, thanks to their outstanding optical and…”
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Valley Zeeman Splitting and Valley Polarization of Neutral and Charged Excitons in Monolayer MoTe2 at High Magnetic Fields
Published in Nano letters (08-06-2016)“…Semiconducting transition metal dichalcogenides (TMDCs) give rise to interesting new phenomena in external magnetic fields, such as valley Zeeman splitting and…”
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Phonon Sidebands in Monolayer Transition Metal Dichalcogenides
Published in Physical review letters (01-11-2017)“…Excitons dominate the optical properties of monolayer transition metal dichalcogenides (TMDs). Besides optically accessible bright exciton states, TMDs exhibit…”
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Thickness‐Dependent Refractive Index of 1L, 2L, and 3L MoS2, MoSe2, WS2, and WSe2
Published in Advanced optical materials (04-07-2019)“…An interesting aspect of 2D materials is the change of their electronic structure with the reduction of thickness. Molybdenum and tungsten‐based transition…”
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Thickness determination of MoS2, MoSe2, WS2 and WSe2 on transparent stamps used for deterministic transfer of 2D materials
Published in Nano research (01-07-2019)“…Here, we propose a method to determine the thickness of the most common transition metal dichalcogenides (TMDCs) placed on the surface of transparent stamps,…”
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11
Thermomagnetic control of spintronic THz emission enabled by ferrimagnets
Published in Applied physics letters (06-01-2020)“…In this Letter, we present a material system with two ferrimagnetic GdxFe100-x layers where the relative orientation of the Fe magnetic moments can be set by…”
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Interlayer excitons in a bulk van der Waals semiconductor
Published in Nature communications (21-09-2017)“…Bound electron–hole pairs called excitons govern the electronic and optical response of many organic and inorganic semiconductors. Excitons with spatially…”
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13
Ultrafast Coulomb-Induced Intervalley Coupling in Atomically Thin WS2
Published in Nano letters (11-05-2016)“…Monolayers of semiconducting transition metal dichalcogenides hold the promise for a new paradigm in electronics by exploiting the valley degree of freedom in…”
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14
Highly Anisotropic in-Plane Excitons in Atomically Thin and Bulklike 1T′‑ReSe2
Published in Nano letters (10-05-2017)“…Atomically thin materials such as graphene or MoS2 are of high in-plane symmetry. Crystals with reduced symmetry hold the promise for novel optoelectronic…”
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15
Single-photon emission from localized excitons in an atomically thin semiconductor
Published in Optica (20-04-2015)Get full text
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Thermally Assisted All-Optical Helicity Dependent Magnetic Switching in Amorphous Fe100-xTbx Alloy Films
Published in Advanced materials (Weinheim) (11-06-2013)“…All‐optical switching (AOS) in ferrimagnetic Fe100‐xTbx alloys is presented. AOS is witnessed below, above, and in samples without a magnetic compensation…”
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17
Composition-dependent ultrafast THz emission of spintronic CoFe/Pt thin films
Published in Applied physics letters (24-01-2022)“…We measure the transient THz emission of ultrathin spintronic bilayers composed of a cobalt–iron alloy (CoxFe1−x) and platinum (Pt), depending on the Co…”
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18
Spin valves as magnetically switchable spintronic THz emitters
Published in Applied physics letters (28-09-2020)“…In this Letter, we demonstrate that spin valve systems consisting of a magnetically soft free Fe layer and a magnetically hard Fe fixed layer pinned by an…”
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19
Excitonic Valley Effects in Monolayer WS2 under High Magnetic Fields
Published in Nano letters (14-12-2016)“…Transition-metal dichalcogenides can be easily produced as atomically thin sheets, exhibiting the possibility to optically polarize and read out the valley…”
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Tailoring Spatiotemporal Light Confinement in Single Plasmonic Nanoantennas
Published in Nano letters (08-02-2012)“…Plasmonic nanoantennas are efficient devices to concentrate light in spatial regions much smaller than the wavelength. Only recently, their ability to…”
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