Molecular collapse in monolayer graphene

Autor: S. P. Milovanović, Dean Moldovan, François M. Peeters, R. Van Pottelberge

Publikováno v: 2D materials

Atomic collapse is a phenomenon inherent to relativistic quantum mechanics where electron states dive in the positron continuum for highly charged nuclei. This phenomenon was recently observed in graphene. Here we investigate a novel collapse phenome

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6417ed00bfbfc9e79792d76884ac0f82

Tuning a Circular p-n Junction in Graphene from Quantum Confinement to Optical Guiding

Autor: Massoud Ramezani Masir, Jinhai Mao, Eva Y. Andrei, François M. Peeters, Kenji Watanabe, Dean Moldovan, Yuhang Jiang, Guohong Li, Takashi Taniguchi

Publikováno v: Nature nanotechnology

The motion of massless Dirac-electrons in graphene mimics the propagation of photons. This makes it possible to control the charge-carriers with components based on geometrical-optics and has led to proposals for an all-graphene electron-optics platf

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4fbc9cc6d92e3694e54f0b5fb7303d6
http://arxiv.org/abs/1705.07346

Atomic xollapse in graphene

Autor: François M. Peeters, Dean Moldovan

Publikováno v: NATO Advanced Research Workshop on Nanomaterials for Security, AUG 30-SEP 03, 2015, Odessa, UKRAINE
NANOMATERIALS FOR SECURITY
Nanomaterials for Security ISBN: 9789401775915

When the charge Z of an atom exceeds the critical value of 170, it will undergo a process called atomic collapse which triggers the spontaneous creation of electron-positron pairs. The high charge requirements have prevented the observation of this p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::00eb86a930bf4b146eb76f9eab29510a
https://hdl.handle.net/10067/1382370151162165141

Realization of a Tunable Artificial Atom at a Supercritically Charged Vacancy in Graphene

Autor: Takashi Taniguchi, Kenji Watanabe, Massoud Ramezani Masir, Jinhai Mao, François M. Peeters, Guohong Li, Eva Y. Andrei, Dean Moldovan, Yuhang Jiang

Publikováno v: Nature physics

The remarkable electronic properties of graphene have fueled the vision of a graphene-based platform for lighter, faster and smarter electronics and computing applications. One of the challenges is to devise ways to tailor its electronic properties a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ada2e2bf54a9471c54b383e17ac182e2
http://arxiv.org/abs/1508.07667

Magnetic field dependence of the atomic collapse state in graphene

Autor: François M. Peeters, Dean Moldovan, M. Ramezani Masir

Publikováno v: 2D materials

Quantum electrodynamics predicts that heavy atoms (Z > Z(c) approximate to 170) will undergo the process of atomic collapse where electrons sink into the positron continuum and a new family of so-called collapsing states emerges. The relativistic ele

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a58931fd49c92f5dd38d4c3f13214966
https://doi.org/10.1088/2053-1583/aa9647