首页|Ultrafast Carrier Dynamics in Ba6Cr2S10 Modified by Toroidal Magnetic Phase Transition

Ultrafast Carrier Dynamics in Ba6Cr2S10 Modified by Toroidal Magnetic Phase Transition

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Ba6Cr2S10 is a recently discovered magnetic material,in which the spins are aligned ferromagnetically in the ab-plane and anti-parallelly in a paired form along the c-axis.It is characterized as a quasi-one dimensional(1D)dimerized structure with a ferrotoroidic order,forming the simplest candidate toroidal magnetic(TM)order and exhibiting an anti-ferromagnetic-like transition at around 10 K.Time-resolved ultrafast dynamics investigation of the novel A-Cr-S(A:metal elements)family of quantum materials has rarely been reported.Here,we investigate the time-resolved pump-probe ultrafast dynamics of a Ba.6Cr2S10 single crystal.A prominent change in the photo-excited carrier dynamics is observed at Tc=10 K,corresponding to the reported TM-paramagnetic phase transition.A potential unknown magnetic transition is also found at T*=29 K.Our results provide new evidence for the TM magnetic transition in Ba6Cr2S10,and shed light on phase transitions in TM quantum materials.

姜丽桐、姜聪颖、田义超、赵惠、张俊、田珍耘、付少华、梁二军、望贤成、靳常青、赵继民

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Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences,Beijing 100190,China

Strong-Field and Ultrafast Photonics Lab,Institute of Laser Engineering,Beijing University of Technology,Beijing 100124,China

School of Physical Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

School of Physics & Laboratory of Zhongyuan Light,Zhengzhou University,Zhengzhou 450052,China

Songshan Lake Materials Laboratory,Dongguan 523808,China

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国家重点研发计划国家重点研发计划CAS Project for Young Scientists in Basic Research北京市自然科学基金中国科学院战略规划重点项目CAS Interdisciplinary Innovation Team

2021YFA14002012017YFA0303600YSBR-0594191003XDB30000000

2024

中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI
影响因子:0.515
ISSN:0256-307X
年,卷(期):2024.41(4)
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