Zobrazeno 1 - 10
of 1 023
pro vyhledávání: '"Hankiewicz A"'
We study the thermoelectrical transport transverse to conventional and topological Josephson junctions with a central quantum dot (QD). For that purpose, we derive an effective resonant tunneling model where the QD is renormalized with an induced sup
Externí odkaz:
http://arxiv.org/abs/2501.01307
Autor:
Özer, Burak, Ochkan, Kyrylo, Chaturvedi, Raghav, Maltsev, Evgenii, Könye, Viktor, Giraud, Romain, Veyrat, Arthur, Hankiewicz, Ewelina M., Watanabe, Kenji, Taniguchi, Takashi, Büchner, Bernd, Brink, Jeroen van den, Fulga, Ion Cosma, Dufouleur, Joseph, Veyrat, Louis
Quantum Hall phases have recently emerged as a platform to investigate non-Hermitian topology in condensed-matter systems. This platform is particularly interesting due to its tunability, which allows to modify the properties and topology of the inve
Externí odkaz:
http://arxiv.org/abs/2410.14329
kdotpy: $\mathbf{k}\cdot\mathbf{p}$ theory on a lattice for simulating semiconductor band structures
Autor:
Beugeling, Wouter, Bayer, Florian, Berger, Christian, Böttcher, Jan, Bovkun, Leonid, Fuchs, Christopher, Hofer, Maximilian, Shamim, Saquib, Siebert, Moritz, Wang, Li-Xian, Hankiewicz, Ewelina M., Kießling, Tobias, Buhmann, Hartmut, Molenkamp, Laurens W.
The software project kdotpy provides a Python application for simulating electronic band structures of semiconductor devices with $\mathbf{k}\cdot\mathbf{p}$ theory on a lattice. The application implements the widely used Kane model, capable of relia
Externí odkaz:
http://arxiv.org/abs/2407.12651
Autor:
Chaturvedi, Raghav, Könye, Viktor, Hankiewicz, Ewelina M., Brink, Jeroen van den, Fulga, Ion Cosma
It has recently been shown that signatures of non-Hermitian topology can be realized in a conventional quantum Hall device connected to multiple current sources. These signatures manifest as robust current-voltage characteristics, dictated by the pre
Externí odkaz:
http://arxiv.org/abs/2406.14303
Autor:
Wang, Li-Xian, Beugeling, Wouter, Schmitt, Fabian, Lunczer, Lukas, Mayer, Julian-Benedikt, Buhmann, Hartmut, Hankiewicz, Ewelina M., Molenkamp, Laurens W.
The band inversion of topological materials in three spatial dimensions is intimately connected to the parity anomaly of two-dimensional massless Dirac fermions. At finite magnetic fields, the parity anomaly reveals itself as a non-zero spectral asym
Externí odkaz:
http://arxiv.org/abs/2402.05770
Autor:
Klees, Raffael L., Gresta, Daniel, Sturm, Jonathan, Molenkamp, Laurens W., Hankiewicz, Ewelina M.
Publikováno v:
Phys. Rev. B 110, 064517 (2024)
The unambiguous identification of Majorana zero modes (MZMs) is one of the most outstanding problems of condensed matter physics. Thermal transport provides a detection tool that is sensitive to these chargeless quasiparticles. We study thermoelectri
Externí odkaz:
http://arxiv.org/abs/2306.17845
Autor:
Ochkan, Kyrylo, Chaturvedi, Raghav, Könye, Viktor, Veyrat, Louis, Giraud, Romain, Mailly, Dominique, Cavanna, Antonella, Gennser, Ulf, Hankiewicz, Ewelina M., Büchner, Bernd, Brink, Jeroen van den, Dufouleur, Joseph, Fulga, Ion Cosma
Publikováno v:
Nature Physics 2024
Quantum devices characterized by non-Hermitian topology are predicted to show highly robust and potentially useful properties, but realizing them has remained a daunting experimental task. This is because non-Hermiticity is often associated with gain
Externí odkaz:
http://arxiv.org/abs/2305.18674
The Callan-Harvey mechanism in 2+1 D Jackiw-Rebbi model is revisited. We analyzed Callan-Harvey anomaly inflow in the massive Chern insulator (quantum anomalous Hall system) subject to external electric field. In addition to the conventional current
Externí odkaz:
http://arxiv.org/abs/2305.00575
Publikováno v:
Sci. Adv. 10, eadq6975 (2024)
Scattering of superconducting pairs by magnetic impurities on a superconducting surface leads to pairs of sharp in-gap resonances, known as Yu-Shiba-Rusinov (YSR) bound states. Similarly to the interference of itinerant electrons scattered by defects
Externí odkaz:
http://arxiv.org/abs/2303.02406
The Luttinger model of a quadratic-node semimetal for electrons with the $j=\frac32$ angular momentum under cubic symmetry is the parent, highest-symmetry low-energy model for a variety of topological and strongly correlated materials, such as HgTe,
Externí odkaz:
http://arxiv.org/abs/2212.00902