Аннотация:
Low-temperature anomalies of hcp 4He crystals (mass decoupling from a torsional oscillator, shear modulus anomaly, dissipation peaks, heat capacity peak) are explained. A simple model based on the concept of resonant tunneling systems in imperfect crystals is proposed. Mass decoupling is caused by an internal Josephson effect: the mass supercurrent inside phase coherent tunneling systems. Quantitative results are in reasonable agreement with experiments.
Образец цитирования:
A. F. Andreev, “Low-temperature anomalies of 4He crystals”, Письма в ЖЭТФ, 94:2 (2011), 133–137; JETP Letters, 94:2 (2011), 129–133
И. И. Ситников, К. М. Цысарь, Е. М. Смелова, А. М. Салецкий, Письма в ЖЭТФ, 103:9 (2016), 673–678; I. I. Sitnikov, K. M. Tsysar, E. M. Smelova, A. M. Saletsky, JETP Letters, 103:9 (2016), 593–597