2015/02/13 by Dimitrije Stepanenko, Mircea Trif, Oleksandr Tsyplyatyev +1
Materials Science · Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Coupling (piping) #Dipole #Magnet #Magnetic dipole #Magnetism in coordination complexes #Microwave #Phase transition #Quantum #Quantum chaos and dynamical systems #Quantum phase transition #cond-mat.mes-hall
paper · pdf · doi:10.1088/0268-1242/31/9/094003
published as Semicond. Sci. Technol. 31, 094003 (2016) · 5 pages, 3 figures
arxiv created 2015/02/13 · openalex created_date 2016/06/24 · openalex publication_date 2016/08/25 · arxiv updated 2017/08/23 · openalex updated_date 2026/08/05
We study a superradiant quantum phase transition in the model of triangular molecular magnets coupled to the electric component of a microwave cavity field. The transition occurs when the coupling strength exceeds a critical value, d c , which, in sharp contrast to the standard two-level emitters, can be tuned by an external magnetic field. In addition to emitted radiation, the molecules develop an in-plane electric dipole moment at the transition. We estimate that the transition can be detected in state-of-the-art microwave cavities if their electric field couples to a crystal containing a sufficient number of oriented molecules.