Phase transitions

Terahertz spectroscopy of quantum phase transitions and the temperature-frequency scaling

B. P. Gorshunov^ab, A. V. Pronin^a, A. S. Prokhorov<sup>ab

a</sup> Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^b Moscow Institute of Physics and Technology (State University), Dolgoprudny, Moscow region

Abstract: In the last few decades, significant progress has been achieved in the development of generators and detectors of terahertz radiation (at frequencies in the range from $\approx$ 300 GHz to $\approx$ 3 THz). Different terahertz spectroscopic techniques have been widely used now in investigating semiconductors, superconductors, molecular magnets, multiferroics, metamaterials, and other promising objects. It has been demonstrated that terahertz spectroscopy offers wide but not completely realized possibilities for studying quantum phase transitions in electron-correlated systems.

Received: 15.07.2010

 English version: Physics of the Solid State, 2011, 53:4, 830–833

Bibliographic databases:

•