Intercalation of van der Waals layered materials: A route towards engineering of electron correlation*

Niu, Jingjing1,2; Zhang, Wenjie1,2; Li, Zhilin1,2; Yang, Sixian3; Yan, Dayu4,5; Chen, Shulin6; Zhang, Zhepeng7; Zhang, Yanfeng7; Ren, Xinguo3; Gao, Peng2,6,8; Shi, Youguo4,5; Yu, Dapeng1,2,9; Wu, Xiaosong1,2,9

2020-09

10.1088/1674-1056/abab85

Chinese Physics B   影响因子和分区

1674-1056

1741-4199

Being parent materials of two-dimensional (2D) crystals, van der Waals layered materials have received revived interest. In most 2D materials, the interaction between electrons is negligible. Introducing the interaction can give rise to a variety of exotic properties. Here, via intercalating a van der Waals layered compound VS2, we find evidence for electron correlation by extensive magnetic, thermal, electrical, and thermoelectric characterizations. The low temperature Sommerfeld coefficient is 64 mJ.K-2.mol(-1)and the Kadowaki-Woods ratior(KW)similar to 0.20a(0). Both supports an enhancement of the electron correlation. The temperature dependences of the resistivity and thermopower indicate an important role played by the Kondo effect. The Kondo temperatureT(K)is estimated to be around 8 K. Our results suggest intercalation as a potential means to engineer the electron correlation in van der Waals materials, as well as 2D materials.

V5S8 intercalation Kondo lattice strong correlations

SCI ; EI

英语

通讯

National Key Basic Research Program of China[2013CBA01603][2016YFA0300600][2016YFA0300903] ; National Natural Science Foundation of China[11574005][11774009][11222436][11574283] ; National Postdoctoral Program for Innovative Talents of China[BX201700012]

Physics

Physics, Multidisciplinary

WOS:000574287300001

IOP PUBLISHING LTD

20204209355266

Van der Waals forces ; Electron correlations ; Electrons

Thermodynamics:641.1 ; Physical Chemistry:801.4 ; Atomic and Molecular Physics:931.3

Web of Science

1.Peking Univ, Beijing Key Lab Quantum Devices, State Key Lab Artificial Microstruct & Mesoscop P, Beijing 100871, Peoples R China
2.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China
3.Univ Sci & Technol China, Synerget Innovat Ctr Quantum Informat & Quantum P, CAS Key Lab Quantum Informat, Hefei 230026, Peoples R China
4.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
5.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
6.Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China
7.Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Ctr Nanochem, Beijing 100871, Peoples R China
8.Peking Univ, Sch Phys, Int Ctr Quantum Mat, Beijing 100871, Peoples R China
9.Southern Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China

Niu, Jingjing,Zhang, Wenjie,Li, Zhilin,et al. Intercalation of van der Waals layered materials: A route towards engineering of electron correlation*[J]. Chinese Physics B,2020,29(9).

Niu, Jingjing.,Zhang, Wenjie.,Li, Zhilin.,Yang, Sixian.,Yan, Dayu.,...&Wu, Xiaosong.(2020).Intercalation of van der Waals layered materials: A route towards engineering of electron correlation*.Chinese Physics B,29(9).

Niu, Jingjing,et al."Intercalation of van der Waals layered materials: A route towards engineering of electron correlation*".Chinese Physics B 29.9(2020).