title: Memory Effect Manifested by a Boson Peak in Metallic Glass.
abstract: We explore the correlation between a boson peak and structural relaxation in a typical metallic glass. Consistent with enthalpy recovery, a boson peak shows a memory effect in an aging-and-scan procedure. Single-step isothermal aging produces a monotonic decrease of enthalpy and boson peak intensity; for double-step isothermal aging, both enthalpy and boson peak intensity experience, coincidently, an incipient increase to a maximum and a subsequent decrease toward the equilibrium state. Our results indicate a direct link between slow structural relaxation and fast boson peak dynamics, which presents a profound understanding of the two dynamic behaviors in glass.
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: P
authors.initials: P
authors.lastname: Luo
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: Y Z
authors.initials: YZ
authors.lastname: Li
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: H Y
authors.initials: HY
authors.lastname: Bai
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: P
authors.initials: P
authors.lastname: Wen
authors.affiliation: Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
authors.forename: W H
authors.initials: WH
authors.lastname: Wang