Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Rappl, P. H. O."'
Autor:
Hernandez, Felix G. G., Baydin, Andrey, Chaudhary, Swati, Tay, Fuyang, Katayama, Ikufumi, Takeda, Jun, Nojiri, Hiroyuki, Okazaki, Anderson K., Rappl, Paulo H. O., Abramof, Eduardo, Rodriguez-Vega, Martin, Fiete, Gregory A., Kono, Junichiro
We have studied the magnetic response of transverse optical phonons in Pb$_{1-x}$Sn$_{x}$Te films. Polarization-dependent terahertz magnetospectroscopy measurements revealed Zeeman splittings and diamagnetic shifts, demonstrating that these phonon mo
Externí odkaz:
http://arxiv.org/abs/2208.12235
Autor:
Baydin, Andrey, Hernandez, Felix G. G., Rodriguez-Vega, Martin, Okazaki, Anderson K., Tay, Fuyang, Noe II, G. Timothy, Katayama, Ikufumi, Takeda, Jun, Nojiri, Hiroyuki, Rappl, Paulo H. O., Abramof, Eduardo, Fiete, Gregory A., Kono, Junichiro
Publikováno v:
Phys. Rev. Lett. 128, 075901 (2022)
PbTe crystals have a soft transverse optical phonon mode in the terahertz frequency range, which is known to efficiently decay into heat-carrying acoustic phonons, resulting in anomalously low thermal conductivity. Here, we studied this phonon via po
Externí odkaz:
http://arxiv.org/abs/2107.07616
Publikováno v:
Journal of Applied Physics; 5/28/2024, Vol. 135 Issue 20, p1-9, 9p
Autor:
Tcakaev, Abdul, Zabolotnyy, Volodymyr B., Fornari, Celso I., Rüßmann, Philipp, Peixoto, Thiago R. F., Stier, Fabian, Dettbarn, Michael, Kagerer, Philipp, Weschke, Eugen, Schierle, Enrico, Bencok, Peter, Rappl, Paulo H. O., Abramof, Eduardo, Bentmann, Hendrik, Goering, Eberhard, Reinert, Friedrich, Hinkov, Vladimir
Publikováno v:
Phys. Rev. B 102, 184401 (2020)
Rare earth ions typically exhibit larger magnetic moments than transition metal ions and thus promise the opening of a wider exchange gap in the Dirac surface states of topological insulators. Yet, in a recent photoemission study of Eu-doped Bi$_2$Te
Externí odkaz:
http://arxiv.org/abs/2009.11733
Autor:
Fornari, Celso I., Abramof, Eduardo, Rappl, Paulo H. O., Kycia, Stefan W., Morelhão, Sérgio L.
Bismuth telluride have regained significant attention as a prototype of topological insulator. Thin films of high quality have been investigated as a basic platform for novel spintronic devices. Low mobility of bismuth and high desorption coefficient
Externí odkaz:
http://arxiv.org/abs/2008.02180
Autor:
Morelhao, Sergio L., Kycia, Stefan, Netzke, Samuel, Fornari, Celso I., Rappl, Paulo H. O., Abramof, Eduardo
Epitaxial films of bismuth telluride topological insulators have received increasing attention due to potential applications in spintronic and quantum computation. One of the most important properties of epitaxial films is the presence of interface d
Externí odkaz:
http://arxiv.org/abs/2007.15042
Publikováno v:
Appl. Phys. Lett. 116, 152402 (2020)
We find that in the ferromagnetic semiconductor EuS, near its Curie temperature, a single band-edge photon generates a spin polaron (SP), whose magnetic moment approaches 20,000 Bohr magnetons. This is much larger than the supergiant photoinduced SPs
Externí odkaz:
http://arxiv.org/abs/2003.12956
Akademický článek
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Autor:
Morelhao, Sergio L., Kycia, Stefan, Netzke, Samuel, Fornari, Celso I., Rappl, Paulo H. O., Abramof, Eduardo
In the supporting information file for article Dynamics of Defects in van der Waals Epitaxy of Bismuth Telluride Topological Insulators(J. Phys. Chem. C 2019, 123, 24818-24825, doi: 10.1021/acs.jpcc.9b05377), several topics on X-ray diffraction analy
Externí odkaz:
http://arxiv.org/abs/1911.00396
Autor:
Kycia, Stefan, Morelhao, Sergio L., Netzke, Samuel, Fornari, Celso I., Rappl, Paulo H. O., Abramof, Eduardo
Potential applications in spintronics and quantum computing have motivated much recent research in epitaxial films of bismuth telluride. This system is also an example of van der Waals (vdW) epitaxy where the interface coherence between film and subs
Externí odkaz:
http://arxiv.org/abs/1812.10804