Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Paulo H. O. Rappl"'
Autor:
Raphael C. Vidal, Thiago R. F. Peixoto, A. Tcakaev, Martin Kamp, V. B. Zabolotnyy, Vladimir Hinkov, Paulo H. O. Rappl, Michael Ruck, Chul-Hee Min, Anna Isaeva, Sérgio L. Morelhão, Hendrik Bentmann, Philipp Kagerer, Friedrich Reinert, Eduardo Abramof, Celso I. Fornari, Tien-Lin Lee
Publikováno v:
The Journal of Physical Chemistry C. 124:16048-16057
In the field of topological materials, the interaction between band topology and magnetism remains a current frontier for the advancement of new topological states and spintronic functionalities. D...
Autor:
Eduardo Abramof, I. F. Costa, S. de Castro, M. L. Peres, Paulo H. O. Rappl, U. A. Mengui, D. A. W. Soares
Publikováno v:
Physical Review B. 104
In this work, we investigated magnetotransport properties in epitaxial heterostructure of $\mathrm{Sn}\mathrm{Te}\text{/}{\mathrm{Sn}}_{1\ensuremath{-}x}{\mathrm{Eu}}_{x}\mathrm{Te}$ under dark and infrared light illumination. The longitudinal resist
Autor:
Andrey Baydin, Felix G. G. Hernandez, Martin Rodriguez-Vega, Anderson K. Okazaki, Fuyang Tay, G. Timothy Noe, Ikufumi Katayama, Jun Takeda, Hiroyuki Nojiri, Paulo H. O. Rappl, Eduardo Abramof, Gregory A. Fiete, Junichiro Kono
Publikováno v:
Physical review letters. 128(7)
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
Autor:
D. A. W. Soares, S. de Castro, F. S. Pena, Eduardo Abramof, Steffen Wiedmann, M. L. Peres, Paulo H. O. Rappl
Publikováno v:
Physical Review B, 103, 20
Physical Review B, 103
Physical Review B, 103
We present here the magnetotransport experiment performed with a magnetic field up to 30 T on a 10 nm-wide $p$-type PbTe quantum well. Pronounced Shubnikov--de Haas oscillations and the integer quantum Hall effect are clearly observed, demonstrating
Autor:
Samuel Netzke, Celso I. Fornari, Sérgio L. Morelhão, Eduardo Abramof, Stefan Kycia, Paulo H. O. Rappl
Publikováno v:
The Journal of Physical Chemistry C. 123:24818-24825
Potential applications in spintronics and quantum information processing 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
Autor:
André Bohomoletz Henriques, Jagadeesh S. Moodera, Xavier Gratens, Yunbo Ou, Paulo H. O. Rappl
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::075928befb4c7efb3f3f22bac43aa00d
http://arxiv.org/abs/2003.12956
http://arxiv.org/abs/2003.12956
Autor:
Paulo Vitor Sciammarella, Carlos A. Pérez, Gilberto Rodrigues-Junior, Luciano de Moura Guimarães, Lucas L.A.B. Marçal, Guilherme A. S. Ribeiro, Paulo H. O. Rappl, Ângelo Malachias, Eduardo Abramof
Publikováno v:
Physical Review Materials. 4
Layered materials can usually grow without strain on top of distinct substrates if the only interaction between them is due to van der Waals forces. In such a scenario it would be expected that the heterointerface made up of weak bounds would not aff
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:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60d6ec773f171a5f0486495e1399c484
Autor:
Hendrik Bentmann, Friedrich Reinert, Paulo H. O. Rappl, Vladimir Hinkov, Eberhard Goering, Fabian Stier, M. Dettbarn, A. Tcakaev, Eugen Weschke, Enrico Schierle, V. B. Zabolotnyy, Philipp Kagerer, P. Bencok, Eduardo Abramof, Philipp Rüßmann, Thiago R. F. Peixoto, Celso I. Fornari
Publikováno v:
Physical review / B 102(18), 184401 (2020). doi:10.1103/PhysRevB.102.184401
Physical review / B 102(18), 184401 (1-13) (2020). doi:10.1103/PhysRevB.102.184401
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 sta
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 sta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::14fceeea71b8ccf23edf265c5cd94e9f
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=102504
http://www.helmholtz-berlin.de/pubbin/oai_publication?VT=1&ID=102504
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
The surface properties of topological insulators are strongly correlated with their structural properties, requiring high-resolution techniques capable of probing both surface and bulk structures at once. In this work, the high flux of a synchrotron