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Correction: Two-dimensional polar metal of a PbTe monolayer by electrostatic doping

Tao Xu*a, Jingtong Zhangb, Yuquan Zhua, Jie Wang*b, Takahiro Shimadac, Takayuki Kitamurac and Tong-Yi Zhang*a
aMaterials Genome Institute, Shanghai University, Shanghai 200444, China. E-mail:
bDepartment of Engineering Mechanics, School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, China. E-mail:
cDepartment of Mechanical Engineering and Science, Kyoto University, Nishikyo-ku, Kyoto 615-8540, Japan

Received 30th September 2020 , Accepted 30th September 2020

First published on 13th October 2020

Correction for ‘Two-dimensional polar metal of a PbTe monolayer by electrostatic doping’ by Tao Xu et al., Nanoscale Horiz., 2020, 5, 1400–1406, DOI: 10.1039/D0NH00188K.

Regrettably, the authors have detected an error in the value of the polarization of the pristine PbTe monolayer in the original manuscript. The polarization is shown incorrectly as 29.2 × 10−10 C m−1 in the text on page 3. The correct value is 15 pC m−1. This value is larger than that of some other 2D ferroelectrics1,2 with the same out-of-plane polarization but is smaller than the reported in-plane polarization of about 100 pC m−1 in ultrathin ferroelectric SnTe3 due to the strong depolarization field in out-of-plane ferroelectrics. Due to this error, the parameters image file: d0nh90052d-t1.tif and J in the effective Hamiltonian model for PbTe in Table S1 and the energy contributions in the Hamiltonian in Fig. 4 in the original manuscript should also be modified accordingly. The updated Table S1 and Fig. 4 are given below.
Table S1 Parameters in the effective Hamiltonian model for PbTe with different doping densities

image file: d0nh90052d-t2.tif

κ2 α2 B11 + B12 B1zz J
−0.05 4.8044 × 10−4 −0.01165 0.13562 66.960 4.3731 −0.18615
0.00 4.7725 × 10−4 −0.04647 0.12631 65.575 4.3122 −0.11882
0.05 4.7436 × 10−4 −0.03488 0.12368 64.853 4.3277 −0.11031
0.10 4.7325 × 10−4 −0.02829 0.11930 63.835 4.2724 −0.10134

image file: d0nh90052d-f4.tif
Fig. 4 Energy contributions in the Hamiltonian during the phase transition in the PbTe monolayer at densities of (a) n = 0 and (b) n = 0.10 e f.u.−1

It should be noted that these changes do not affect the discussion, conclusions and the proposed new concept of the manuscript.

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.


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  2. A. Samad, H. J. Kim and Y. H. Shin, J. Phys.: Condens. Matter, 2018, 31, 045301 CrossRef.
  3. K. Chang, J. Liu, H. Lin, N. Wang, K. Zhao, A. Zhang, F. Jin, Y. Zhong, X. Hu, W. Duan, Q. Zhang, L. Fu, Q.-K. Xue, X. Chen and S. H. Ji, Science, 2016, 353, 274 CrossRef CAS.

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