Quantum Breaking of Elastic String

Details Quantum Breaking of Elastic String Quantum Breaking of Elastic String

1994-06-29

arxiv.org/abs/cond-mat/9406117v4

Phys. Rev. Lett. 77, 370 (1995)

Physics

Condensed Matter

8 pages, RevTeX 3.0, Landau Institute preprint 261/6438

Scientific paper

10.1103/PhysRevLett.75.370

Breaking of an atomic chain under stress is a collective many-particle tunneling phenomenon. We study classical dynamics in imaginary time by using conformal mapping technique, and derive an analytic formula for the probability of breaking. The result covers a broad temperature interval and interpolates between two regimes: tunneling and thermal activation. Also, we consider the breaking induced by an ultrasonic wave propagating in the chain, and propose to observe it in an STM experiment.

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