November 25, 2015 (15:00) the seminar

From 15:00 until 16:30

At NUST MISIS, Laboratory for superconducting metamaterials, office Б-702

Moscow, Leninsky Prospekt, 4

Laboratory for superconducting metamaterials / Phone: 8 (495) 6384646, email: smm@misis.ru

November 25, 2015 (15:00) the seminar "Emergent Phenomena Near Spin and Charge Quantum Phase Transitions" organized by the Laboratory for superconducting metamaterials will take place in  NUST «MISIS». 

Presenter: Dr. Siddharth S. Saxena (Quantum Matter Group, Cavendish Laboratory, Cambridge )

Abstract:

This talk will focus on experimental search and discovery of novel forms of quantum order in metallic and insulating magnets, intercalated compounds, ferroelectric systems and multiferroic materials. Particularly discussed will be the pressure-induced superconductivity and critical phenomena in the vicinity of quantum phase transitions.

Materials tuned to the neighbourhood of a zero temperature phase transition often show the emergence of novel quantum phenomena. Much of the effort to study these new emergent effects, like the breakdown of the conventional Fermi-liquid theory in metals has been focused in narrow band electronic systems. But spin or charge ordered phases in insulating systems can also be tuned to absolute zero using hydrostatic pressure. Close to such a zero temperature phase transition, physical quantities like resistivity, magnetisation and dielectrics constant change into radically unconventional forms due to the fluctuations experienced in this region giving rise to new kinds ordered states including superconductivity in the metallic systems.