Berlin 2018 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 51: Nonequilibrium Quantum Many-Body Systems I (joint session TT/DY)

TT 51.5: Vortrag

Mittwoch, 14. März 2018, 10:45–11:00, H 3010

The non-equilibrium Peierls transition in thermodynamic unbalanced system — •Pedro Ribeiro¹ and Stefan Kirchner² — ¹Affiliation: CeFEMA, Instituto Superior Técnico, Universidade de Lisboa Av. Rovisco Pais, 1049-001 Lisboa, Portugal — ²Center for Correlated Matter, Zhejiang University, Hangzhou, Zhejiang 310058, China

Spin- and charge density waves are a common phenomenon in condensed matter physics. Charge density waves were predicted by R. Peierls who showed that due to the electron-phonon coupling a one-dimensional lattice may become unstable and undergoes a transition into an ordered. Away from thermal equilibrium, much less is known about this transition. In this talk, we address the fate of this instability under non-equilibrium conditions created by imposing a finite voltage across the system. In particular, we explore the possibility of changing the ordering wave vector away from its equilibrium position by a finite voltage drop across the system.