#### Filter Results:

- Full text PDF available (13)

#### Publication Year

2000

2017

- This year (5)
- Last 5 years (12)
- Last 10 years (19)

#### Publication Type

#### Co-author

#### Journals and Conferences

Learn More

- Tadeusz DomaÅ„ski, Ireneusz Weymann, Magdalena Baranska, G. GÃ³rski
- Scientific reports
- 2016

Superconducting order and magnetic impurities are usually detrimental to each other. We show, however, that in nanoscopic objects the induced electron pairing can have constructive influence on the Kondo effect originating from the effective screening interactions. Such situation is possible at low temperatures in the quantum dots placed between theâ€¦ (More)

- CÄƒtÄƒlin PaÅŸcu Moca, Ireneusz Weymann, +4 authors Gergely ZarÃ¡nd
- 2014

- Szabolcs Csonka, Ireneusz Weymann, Gergely ZarÃ¡nd
- Nanoscale
- 2012

We present a proposal for a fully electrically controllable quantum dot based spin current injector. The device consists of a quantum dot that is strongly coupled to a ferromagnetic electrode on one side and weakly coupled to a nonmagnetic electrode on the other side. The presence of the ferromagnetic electrode results in an exchange field that splits theâ€¦ (More)

- Ireneusz Weymann, S. Krompiewski, J. Barnas
- Journal of nanoscience and nanotechnology
- 2012

We analyze theoretically transport properties of graphene quantum dots weakly coupled to normal and ferromagnetic leads. The calculations are performed by using the real-time diagrammatic technique in the first-order approximation with respect to tunneling processes. First, we analyze the energy spectrum of graphene dots of different shape. Then, weâ€¦ (More)

- K. WrzeÂ±niewski, Ireneusz Weymann
- 2015

We consider transport through triple quantum dot system in a triangular geometry weakly coupled to external ferromagnetic leads. The real-time diagrammatic technique in the lowest order perturbation theory is used to calculate the current and Fano factor in the parallel and antiparallel magnetic con guration of the system as well as the resulting tunnelâ€¦ (More)

- Ireneusz Weymann
- Pflege Zeitschrift
- 2000

- Ireneusz Weymann
- Scientific reports
- 2016

In nanoscopic systems quantum confinement and interference can lead to an enhancement of thermoelectric properties as compared to conventional bulk materials. For nanostructures, such as molecules or quantum dots coupled to external leads, the thermoelectric figure of merit can reach or even exceed unity. Moreover, in the presence of external magnetic fieldâ€¦ (More)

- Kaveh Gharavi, Gregory W. Holloway, +5 authors Sergey Smirnov
- 2017

Non-equilibriumphysics of random events, orfluctuations, is a unique fingerprint of a given system. Herewe demonstrate that in non-interacting systemswith dynamics driven essentially byMajorana states the effective charge e*, characterizing the electric current fluctuations, is fractional. This is in contrast to non-interactingDirac systemswith the trivialâ€¦ (More)

- Ireneusz Weymann
- 2008

An important consequence of the discovery of giant magnetoresistance in metallic magnetic multilayers is a broad interest in spin dependent effects in electronic transport through magnetic nanostructures. An example of such systems are tunnel junctions â€“ single-barrier planar junctions or more complex ones. In this review we present and discuss recentâ€¦ (More)

- Ireneusz Weymann
- Journal of physics. Condensed matter : anâ€¦
- 2010

We analyze numerically the spin-dependent transport through coherent chains of three coupled quantum dots weakly connected to external magnetic leads. In particular, using the diagrammatic technique on the Keldysh contour, we calculate the conductance, shot noise and tunnel magnetoresistance (TMR) in the sequential and cotunneling regimes. We show thatâ€¦ (More)