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2. Nobelova cena za fyziku v roku 2016 z oblasti fyziky kondenzovanej fázy: D. J. Thouless, F. D. M. Haldane a J. M. Kosterlitz ocenení za teoretické objavy topologických fázových prechodov a topologických fáz hmoty

Creator:
Orendáčová, Alžbeta, Gabáni, Slavomír, and Orendáč, Martin
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
Thouless, David James, Kosterlitz, John Michael, Haldane, Frederick Duncan M., Nobelova cena (ocenění), fyzika, Nobel Prizes, condensed matter physics, fyzika kondenzovaného stavu, topologické fázové přechody, topologické fáze hmoty, topological phase transitions, topological phse of matter, 6, and 53
Language:
Czech and English
Description:
This year’s Nobel Prize in Physics was awarded for work in the field of condensed matter physics. The winning Laureate’s pioneering work from the early 1970s and 1980s opened up ways for new and exotic phases of matter, based on the concept of topology, previously used only in mathematics. D. J. Thouless and J. M. Kosterlitz theoretically predicted the existence of unconventional phase transitions in two-dimensional systems. These topological transitions occur at finite temperatures and are governed by dissociation of pairs of nanoscopic topological objects. This scenario explained the mechanism of phase transitions in two-dimensional magnets as well as the occurrence of superconductivity and superfluidity in thin films. F. D. M. Haldane discovered how topological concepts can be used to understand ground-state properties of magnetic chains with integer spin, which belong to the so-called Haldane phase. Another example, which has recently gained a lot of attention, is a topological insulator, a material with non-trivial topological order, which behaves as an insulator in its bulk but whose surface contains topologically protected conducting states. The topological insulator as well as the magnetic chain form the Haldane phase represent symmetry protected by topological states. Over the last decade, this area developed into a frontline research in condensed matter physics, as topological materials could be used in next generation electronics, superconductors and quantum information science. Last but not least, current research reveals secrets of exotic states of matter discovered by this year’s Nobel Laureates., Alžbeta Orendáčová, Slavomír Gabáni, Martin Orendáč., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public

3. Nové magnetické materiály - frustrácia alebo očakávanie?

Creator:
Orendáč, Martin
Format:
print, bez média, and svazek
Type:
model:article and TEXT
Subject:
magnetické vlastnosti materiálů, magnetic properties of materials, magnetické materiály, magnetic materials, 6, and 537.6/.8
Language:
Czech and English
Description:
Magnetic properties of selected unconventional magnetic systems are described. More specifically, the nature of the ground state and excited states in a dipolar spin ice Dy2Ti2O2 representing magnetic analog of frozen water is addressed. In addition, static and dynamic properties of single molecule magnets as potential memory elements are discussed., Martin Orendáč., and Obsahuje bibliografii
Rights:
http://creativecommons.org/licenses/by-nc-sa/4.0/ and policy:public