Magnetic entropy dynamics in ultrafast demagnetization. (16th October 2020)

• Record Type: Journal Article
• Authors: Goharshenasanesfahani, S; Smadici, S
• Is Part Of: Journal of physics. Volume 33:Number 3(2021)
• Publication Date: 2020-10-16
• Subjects: ultrafast -- magnetism -- magneto-optics; Condensed matter -- Periodicals; Matière condensée -- Périodiques; Vaste stoffen; Vloeistoffen; Natuurkunde; Electronic journals; Computer network resources; 530.4105
• DOI: 10.1088/1361-648X/abbc31
• Languages: English
• ISSNs: 0953-8984

Abstract

Abstract: A double polarization and temperature modulation configuration was applied to measure the magnetization and magnetic entropy dynamics in ultrafast demagnetization. Two magnetic properties, obtained by subtracting measurements made at opposite fields, have the same onset at small delays and different relaxations at large delays. The different dynamics suggests that spin relaxation in ultrafast demagnetization is a combination of two processes.