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	Magnetic phases in an artificial realization of the square ice model Brunn, Ondřej ; Hrabec, Aleš (oponent) ; Rougemaille, Nicolas (vedoucí práce) Artificial spin systems are convenient tool for exploring and manipulating unconventional exotic low-energy states directly in real space. Experimental realization of these system is made by pattering arrays of interacting nanomagnets with given geometry. First and also probably the most extensively studied artificial system have regular square lattice. In this work we deal with the modification of the square geometry that enable us to induce distinct magnetic phases of ice-type models. Results show that with appropriate tuning of the modification, several magnetic phases can be reached, including the disordered spin-liquid phase with trapped magnetic quasi-particles (magnetic monopoles). Úplný záznam
	Artificial Shakti ice magnets: ground state degeneracy, Coulomb phase and monopole excitations Zálešák, Marek ; Hrabec, Aleš (oponent) ; Rougemaille, Nicolas (vedoucí práce) Artificial spin systems have emerged as a promising platform for studying in real space and harnessing exotic states of matter. This diploma thesis investigates the unique properties of a specific artificial spin system known as the shakti ice magnet. The shakti ice magnet is a two-dimensional arrangement of interacting nano-magnets, exhibiting intriguing magnetic behaviour. This research aimed at characterising its behaviour and its ability to be mapped onto the seminal square ice in which interesting Coulomb physics is expected. A combination of experimental measurements and numerical simulations was employed to achieve these objectives. Experiments were based on MFM measurements to determine the magnetic configuration of samples containing lithographically prepared shakti lattices. Úplný záznam
	Magnetic phases in an artificial realization of the square ice model Brunn, Ondřej ; Hrabec, Aleš (oponent) ; Rougemaille, Nicolas (vedoucí práce) Artificial spin systems are convenient tool for exploring and manipulating unconventional exotic low-energy states directly in real space. Experimental realization of these system is made by pattering arrays of interacting nanomagnets with given geometry. First and also probably the most extensively studied artificial system have regular square lattice. In this work we deal with the modification of the square geometry that enable us to induce distinct magnetic phases of ice-type models. Results show that with appropriate tuning of the modification, several magnetic phases can be reached, including the disordered spin-liquid phase with trapped magnetic quasi-particles (magnetic monopoles). Úplný záznam

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