Výsledky vyhledávání - "Schwartz, Rico"

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Excitonic signatures of ferroelectric order in parallel-stacked MoS$_2$

Autor: Deb, Swarup, Krause, Johannes, Junior, Paulo E. Faria, Kempf, Michael Andreas, Schwartz, Rico, Watanabe, Kenji, Taniguchi, Takashi, Fabian, Jaroslav, Korn, Tobias

Publikováno v: Nature Communications 15 (2024) 7595

Interfacial ferroelectricity, prevalent in various parallel-stacked layered materials, allows switching of out-of-plane ferroelectric order by in-plane sliding of adjacent layers. Its resilience against doping potentially enables next-generation stor

Externí odkaz: http://arxiv.org/abs/2409.07234

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Effect of spin-dependent tunneling in a MoSe$_2$/Cr$_2$Ge$_2$Te$_6$ van der Waals heterostructure on exciton and trion emission

Autor: Bergmann, Annika, Deb, Swarup, Schneidt, Veronika, Hemaid, Mustafa, Watanabe, Kenji, Taniguchi, Takashi, Schwartz, Rico, Korn, Tobias

We study van der Waals heterostructures consisting of monolayer MoSe$_2$ and few-layer Cr$_2$Ge$_2$Te$_6$ fully encapsulated in hexagonal Boron Nitride using low-temperature photoluminescence and polar magneto-optic Kerr effect measurements. Photolum

Externí odkaz: http://arxiv.org/abs/2407.11603

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Rapid spin depolarization in the layered 2D Ruddlesden Popper perovskite (BA)(MA)PbI

Autor: Kempf, Michael, Moser, Philipp, Tomoscheit, Maximilian, Schröer, Julian, Blancon, Jean-Christophe, Schwartz, Rico, Deb, Swarup, Mohite, Aditya, Stier, Andreas V., Finley, Jonathan J., Korn, Tobias

Publikováno v: ACS nano 2023

We report temperature-dependent spectroscopy on the layered (n=4) two-dimensional (2D) Ruddlesden-Popper perovskite (BA)(MA)PbI. Helicity-resolved steady-state photoluminescence (PL) reveals no optical degree of polarization. Time-resolved PL shows a

Externí odkaz: http://arxiv.org/abs/2309.09784

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Scrutinizing the Debye plasma model: Rydberg excitons unravel the properties of low-density plasmas in semiconductors

Autor: Stolz, Heinrich, Semkat, Dirk, Schwartz, Rico, Heckötter, Julian, Aßmann, Marc, Kraeft, Wolf-Dietrich, Fehske, Holger, Bayer, Manfred

For low-density plasmas, the classical limit described by the Debye-H\"uckel theory is still considered as an appropriate description even though a clear experimental proof of this paradigm is lacking due to the problems in determining the plasma-ind

Externí odkaz: http://arxiv.org/abs/2111.12500

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Coherent transfer matrix analysis of the transmission spectra of Rydberg excitons in Cuprous Oxide

Autor: Stolz, Heinrich, Schwartz, Rico, Heckötter, Julian, Aßmann, Marc, Semkat, Dirk, Krüger, Sjard O., Bayer, Manfred

Publikováno v: Phys. Rev. B 104, 035206 (2021)

In this study we analyze the transmission spectrum of a thin plate of Cuprous Oxide in the range of the absorption of the yellow exciton states with the coherent transfer matrix method. We demonstrate that, in contrast to the usual analysis using Bee

Externí odkaz: http://arxiv.org/abs/2009.09214

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Condensation of Excitons in Cu2O at Ultracold Temperatures: Experiment and Theory

Autor: Stolz, Heinrich, Schwartz, Rico, Kieseling, Frank, Som, Sunipa, Kaupsch, Maria, Sobkowiak, Siegfried, Semkat, Dirk, Naka, Nobuko, Koch, Thomas, Fehske, Holger

Publikováno v: New J. Phys. 14, 105007 (2012)

We present experiments on the luminescence of excitons confined in a potential trap at milli-Kelvin bath temperatures under cw-excitation. They reveal several distinct features like a kink in the dependence of the total integrated luminescence intens

Externí odkaz: http://arxiv.org/abs/1206.7029

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