Point-contact study of fast and slow two-level fluctuators in metallic glasses

2020-03-30 08:21:15

noise spectroscopy Ukraine peaks TLF

责任者: Keijsers, RJP;Shklyarevskii, OI;vanKempen, H 单位: NATL ACAD SCI UKRAINE,B VERKIN INST LOW TEMP PHYS & ENGN,UA-310164 KHARKOV,UKRAINE. 来源出处: PHYSICAL REVIEW LETTERS, v 77, OCT 14 1996, p 3411- 3414 摘要: Distinct peaks in the differential resistance of point contacts of metallic glasses have been observed around zero bias. These peaks can be attributed to the interaction between conduction electrons and fast switching two-level fluctuators (TLF). Discrete jumps between two such peaks were found to occur, which can be explained by a modulation of the electron-TLF coupling by defects, present in the vicinity of the contact, that slowly switch between two configurations. 关键词: carbon clusters; field evaporation; graphite; scanning tunneling microscopy microscopy; 2-LEVEL TUNNELING SYSTEMS; AMORPHOUS METALS; NANOBRIDGES; ELECTRONS; NOISE; SPECTROSCOPY; ALLOYS NOISE; SPECTROSCOPY; ALLOYS