TY - JOUR
T1 - Room temperature ferromagnetism in ultra-thin van der Waals crystals of 1T-CrTe2
AU - Sun, Xingdan
AU - Li, Wanying
AU - Wang, Xiao
AU - Sui, Qi
AU - Zhang, Tongyao
AU - Wang, Zhi
AU - Liu, Long
AU - Li, Da
AU - Feng, Shun
AU - Zhong, Siyu
AU - Wang, Hanwen
AU - Bouchiat, Vincent
AU - Nunez Regueiro, Manuel
AU - Rougemaille, Nicolas
AU - Coraux, Johann
AU - Purbawati, Anike
AU - Hadj-Azzem, Abdellali
AU - Wang, Zhenhua
AU - Dong, Baojuan
AU - Wu, Xing
AU - Yang, Teng
AU - Yu, Guoqiang
AU - Wang, Bingwu
AU - Han, Zheng
AU - Han, Xiufeng
AU - Zhang, Zhidong
N1 - Publisher Copyright:
© 2020, Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature.
PY - 2020/12/1
Y1 - 2020/12/1
N2 - Although many emerging new phenomena have been unraveled in two dimensional (2D) materials with long-range spin orderings, the usually low critical temperature in van der Waals (vdW) magnetic material has thus far hindered the related practical applications. Here, we show that ferromagnetism can hold above 300 K in a metallic phase of 1T-CrTe2 down to the ultra-thin limit. It thus makes CrTe2 so far the only known exfoliated ultra-thin vdW magnets with intrinsic long-range magnetic ordering above room temperature. An in-plane room-temperature negative anisotropic magnetoresistance (AMR) was obtained in ultra-thin CrTe2 devices, with a sign change in the AMR at lower temperature, with −0.6% and +5% at 300 and 10 K, respectively. Our findings provide insights into magnetism in ultra-thin CrTe2, expanding the vdW crystals toolbox for future room-temperature spintronic applications. [Figure not available: see fulltext.].
AB - Although many emerging new phenomena have been unraveled in two dimensional (2D) materials with long-range spin orderings, the usually low critical temperature in van der Waals (vdW) magnetic material has thus far hindered the related practical applications. Here, we show that ferromagnetism can hold above 300 K in a metallic phase of 1T-CrTe2 down to the ultra-thin limit. It thus makes CrTe2 so far the only known exfoliated ultra-thin vdW magnets with intrinsic long-range magnetic ordering above room temperature. An in-plane room-temperature negative anisotropic magnetoresistance (AMR) was obtained in ultra-thin CrTe2 devices, with a sign change in the AMR at lower temperature, with −0.6% and +5% at 300 and 10 K, respectively. Our findings provide insights into magnetism in ultra-thin CrTe2, expanding the vdW crystals toolbox for future room-temperature spintronic applications. [Figure not available: see fulltext.].
KW - CrTe
KW - anisotropic magnetoresistance (AMR)
KW - room temperature ferromagnetism
KW - two dimensional (2D)
UR - https://www.scopus.com/pages/publications/85089983564
U2 - 10.1007/s12274-020-3021-4
DO - 10.1007/s12274-020-3021-4
M3 - 文章
AN - SCOPUS:85089983564
SN - 1998-0124
VL - 13
SP - 3358
EP - 3363
JO - Nano Research
JF - Nano Research
IS - 12
ER -