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Title: Room-temperature ferroelectricity in CuInP2S6 ultrathin flakes

Abstract

In this study, two-dimensional (2D) materials have emerged as promising candidates for various optoelectronic applications based on their diverse electronic properties, ranging from insulating to superconducting. However, cooperative phenomena such as ferroelectricity in the 2D limit have not been well explored. Here, we report room-temperature ferroelectricity in 2D CuInP2S6 (CIPS) with a transition temperature of ~320 K. Switchable polarization is observed in thin CIPS of ~4 nm. To demonstrate the potential of this 2D ferroelectric material, we prepare a van der Waals (vdW) ferroelectric diode formed by CIPS/Si heterostructure, which shows good memory behaviour with on/off ratio of ~100. The addition of ferroelectricity to the 2D family opens up possibilities for numerous novel applications, including sensors, actuators, non-volatile memory devices, and various vdW heterostructures based on 2D ferroelectricity.

Authors:
 [1]; ORCiD logo [1];  [2];  [3];  [1];  [4];  [1];  [1];  [1];  [1]; ORCiD logo [5]; ORCiD logo [6];  [7]; ORCiD logo [2];  [8]; ORCiD logo [1];  [9]
  1. Nanyang Technological Univ. (Singapore)
  2. Univ. of Washington, Seattle, WA (United States)
  3. Hefei Univ. of Technology, Hefei (China)
  4. Vanderbilt Univ., Nashville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); National Institute of Advanced Industrial Science and Technology, Tsukuba (Japan)
  5. Vanderbilt Univ., Nashville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  6. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  7. Univ. of Houston, Houston, TX (United States)
  8. Rice Univ., Houston, TX (United States)
  9. Nanyang Technological Univ. (Singapore); CINTRA CNRS/NTU/THALES (Singapore)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Sciences (CNMS)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1331101
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Nature Communications
Additional Journal Information:
Journal Volume: 7; Journal ID: ISSN 2041-1723
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Liu, Fucai, You, Lu, Seyler, Kyle L., Li, Xiaobao, Yu, Peng, Lin, Junhao, Wang, Xuewen, Zhou, Jiadong, Wang, Hong, He, Haiyong, Pantelides, Sokrates T., Zhou, Wu, Sharma, Pradeep, Xu, Xiaodong, Ajayan, Pulickel M., Wang, Junling, and Liu, Zheng. Room-temperature ferroelectricity in CuInP2S6 ultrathin flakes. United States: N. p., 2016. Web. doi:10.1038/ncomms12357.
Liu, Fucai, You, Lu, Seyler, Kyle L., Li, Xiaobao, Yu, Peng, Lin, Junhao, Wang, Xuewen, Zhou, Jiadong, Wang, Hong, He, Haiyong, Pantelides, Sokrates T., Zhou, Wu, Sharma, Pradeep, Xu, Xiaodong, Ajayan, Pulickel M., Wang, Junling, & Liu, Zheng. Room-temperature ferroelectricity in CuInP2S6 ultrathin flakes. United States. https://doi.org/10.1038/ncomms12357
Liu, Fucai, You, Lu, Seyler, Kyle L., Li, Xiaobao, Yu, Peng, Lin, Junhao, Wang, Xuewen, Zhou, Jiadong, Wang, Hong, He, Haiyong, Pantelides, Sokrates T., Zhou, Wu, Sharma, Pradeep, Xu, Xiaodong, Ajayan, Pulickel M., Wang, Junling, and Liu, Zheng. Thu . "Room-temperature ferroelectricity in CuInP2S6 ultrathin flakes". United States. https://doi.org/10.1038/ncomms12357. https://www.osti.gov/servlets/purl/1331101.
@article{osti_1331101,
title = {Room-temperature ferroelectricity in CuInP2S6 ultrathin flakes},
author = {Liu, Fucai and You, Lu and Seyler, Kyle L. and Li, Xiaobao and Yu, Peng and Lin, Junhao and Wang, Xuewen and Zhou, Jiadong and Wang, Hong and He, Haiyong and Pantelides, Sokrates T. and Zhou, Wu and Sharma, Pradeep and Xu, Xiaodong and Ajayan, Pulickel M. and Wang, Junling and Liu, Zheng},
abstractNote = {In this study, two-dimensional (2D) materials have emerged as promising candidates for various optoelectronic applications based on their diverse electronic properties, ranging from insulating to superconducting. However, cooperative phenomena such as ferroelectricity in the 2D limit have not been well explored. Here, we report room-temperature ferroelectricity in 2D CuInP2S6 (CIPS) with a transition temperature of ~320 K. Switchable polarization is observed in thin CIPS of ~4 nm. To demonstrate the potential of this 2D ferroelectric material, we prepare a van der Waals (vdW) ferroelectric diode formed by CIPS/Si heterostructure, which shows good memory behaviour with on/off ratio of ~100. The addition of ferroelectricity to the 2D family opens up possibilities for numerous novel applications, including sensors, actuators, non-volatile memory devices, and various vdW heterostructures based on 2D ferroelectricity.},
doi = {10.1038/ncomms12357},
journal = {Nature Communications},
number = ,
volume = 7,
place = {United States},
year = {Thu Aug 11 00:00:00 EDT 2016},
month = {Thu Aug 11 00:00:00 EDT 2016}
}

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Works referenced in this record:

Ferroelectric tunnel junctions for information storage and processing
journal, July 2014

  • Garcia, Vincent; Bibes, Manuel
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms5289

Physics of thin-film ferroelectric oxides
journal, October 2005


Strain Tuning of Ferroelectric Thin Films
journal, August 2007


Extrinsic and Intrinsic Charge Trapping at the Graphene/Ferroelectric Interface
journal, August 2014

  • Yusuf, M. Humed; Nielsen, Bent; Dawber, M.
  • Nano Letters, Vol. 14, Issue 9
  • DOI: 10.1021/nl502669v

Interface Physics in Complex Oxide Heterostructures
journal, March 2011


Strongly enhanced charge-density-wave order in monolayer NbSe2
journal, July 2015

  • Xi, Xiaoxiang; Zhao, Liang; Wang, Zefang
  • Nature Nanotechnology, Vol. 10, Issue 9, p. 765-769
  • DOI: 10.1038/nnano.2015.143

Bandgap opening in few-layered monoclinic MoTe2
journal, May 2015

  • Keum, Dong Hoon; Cho, Suyeon; Kim, Jung Ho
  • Nature Physics, Vol. 11, Issue 6
  • DOI: 10.1038/nphys3314

Black phosphorus field-effect transistors
journal, March 2014


CuInP 2 S 6 Room Temperature Layered Ferroelectric
journal, May 2015


Paraelectric-Ferroelectric Transition in the Lamellar Thiophosphate CuInP2S6
journal, September 1994

  • Simon, A.; Ravez, J.; Maisonneuve, V.
  • Chemistry of Materials, Vol. 6, Issue 9
  • DOI: 10.1021/cm00045a016

Room-temperature crystal structure of the layered phase CuIInIIIP2S6
journal, March 1995


Ferrielectric ordering in lamellar CuInP 2 S 6
journal, November 1997


Piezoresponse force microscopy and recent advances in nanoscale studies of ferroelectrics
journal, January 2006


Scaling of structure and electrical properties in ultrathin epitaxial ferroelectric heterostructures
journal, September 2006

  • Nagarajan, V.; Junquera, J.; He, J. Q.
  • Journal of Applied Physics, Vol. 100, Issue 5
  • DOI: 10.1063/1.2337363

The piezoresponse force microscopy of surface layers and thin films: Effective response and resolution function
journal, October 2007

  • Morozovska, Anna N.; Eliseev, Eugene A.; Kalinin, Sergei V.
  • Journal of Applied Physics, Vol. 102, Issue 7
  • DOI: 10.1063/1.2785824

Flexoelectric rotation of polarization in ferroelectric thin films
journal, October 2011

  • Catalan, G.; Lubk, A.; Vlooswijk, A. H. G.
  • Nature Materials, Vol. 10, Issue 12
  • DOI: 10.1038/nmat3141

Critical thickness for ferroelectricity in perovskite ultrathin films
journal, April 2003

  • Junquera, Javier; Ghosez, Philippe
  • Nature, Vol. 422, Issue 6931, p. 506-509
  • DOI: 10.1038/nature01501

Ultrathin limit and dead-layer effects in local polarization switching of BiFeO 3
journal, January 2012


Interface-induced nonswitchable domains in ferroelectric thin films
journal, August 2014

  • Han, Myung-Geun; Marshall, Matthew S. J.; Wu, Lijun
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms5693

Origin of the dielectric dead layer in nanoscale capacitors
journal, October 2006

  • Stengel, Massimiliano; Spaldin, Nicola A.
  • Nature, Vol. 443, Issue 7112
  • DOI: 10.1038/nature05148

The Role of Electrochemical Phenomena in Scanning Probe Microscopy of Ferroelectric Thin Films
journal, June 2011

  • Kalinin, Sergei V.; Jesse, Stephen; Tselev, Alexander
  • ACS Nano, Vol. 5, Issue 7
  • DOI: 10.1021/nn2013518

Switchable Induced Polarization in LaAlO 3 /SrTiO 3 Heterostructures
journal, January 2012

  • Bark, C. W.; Sharma, P.; Wang, Y.
  • Nano Letters, Vol. 12, Issue 4
  • DOI: 10.1021/nl3001088

Probing Surface and Bulk Electrochemical Processes on the LaAlO 3 –SrTiO 3 Interface
journal, April 2012

  • Kumar, Amit; Arruda, Thomas M.; Kim, Yunseok
  • ACS Nano, Vol. 6, Issue 5
  • DOI: 10.1021/nn204960c

Probing Ferroelectrics Using Optical Second Harmonic Generation
journal, August 2011


Second harmonic generation in the lamellar ferrielectric CuInP2S6
journal, August 2000


Solid-state memories based on ferroelectric tunnel junctions
journal, December 2011

  • Chanthbouala, André; Crassous, Arnaud; Garcia, Vincent
  • Nature Nanotechnology, Vol. 7, Issue 2
  • DOI: 10.1038/nnano.2011.213

Theory of polarization of crystalline solids
journal, January 1993


Ferroelectricity at the Nanoscale: Local Polarization in Oxide Thin Films and Heterostructures
journal, April 2004


Strongly enhanced charge-density-wave order in monolayer NbSe$_2$
text, January 2015


Physics of thin-film ferroelectric oxides
text, January 2005


Room-temperature crystal structure of the layered phase CuIInIIIP2S6
journal, March 1995


Switchable Induced Polarization in LaAlO 3 /SrTiO 3 Heterostructures
journal, January 2012

  • Bark, C. W.; Sharma, P.; Wang, Y.
  • Nano Letters, Vol. 12, Issue 4
  • DOI: 10.1021/nl3001088

The Role of Electrochemical Phenomena in Scanning Probe Microscopy of Ferroelectric Thin Films
journal, June 2011

  • Kalinin, Sergei V.; Jesse, Stephen; Tselev, Alexander
  • ACS Nano, Vol. 5, Issue 7
  • DOI: 10.1021/nn2013518

Ferroelectric tunnel junctions for information storage and processing
journal, July 2014

  • Garcia, Vincent; Bibes, Manuel
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms5289

Interface-induced nonswitchable domains in ferroelectric thin films
journal, August 2014

  • Han, Myung-Geun; Marshall, Matthew S. J.; Wu, Lijun
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms5693

Flexoelectric rotation of polarization in ferroelectric thin films
journal, October 2011

  • Catalan, G.; Lubk, A.; Vlooswijk, A. H. G.
  • Nature Materials, Vol. 10, Issue 12
  • DOI: 10.1038/nmat3141

QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials
journal, September 2009

  • Giannozzi, Paolo; Baroni, Stefano; Bonini, Nicola
  • Journal of Physics: Condensed Matter, Vol. 21, Issue 39, Article No. 395502
  • DOI: 10.1088/0953-8984/21/39/395502

Probing Ferroelectrics Using Optical Second Harmonic Generation
journal, August 2011


The Piezoresponse Force Microscopy of surface layers and thin films: effective response and resolution function
text, January 2007


Physics of thin-film ferroelectric oxides
text, January 2005


Works referencing / citing this record:

Room‐Temperature Ferroelectricity in Hexagonally Layered α‐In 2 Se 3 Nanoflakes down to the Monolayer Limit
journal, October 2018

  • Xue, Fei; Hu, Weijin; Lee, Ko‐Chun
  • Advanced Functional Materials, Vol. 28, Issue 50
  • DOI: 10.1002/adfm.201803738

Metal Thio- and Selenophosphates as Multifunctional van der Waals Layered Materials
journal, August 2017

  • Susner, Michael A.; Chyasnavichyus, Marius; McGuire, Michael A.
  • Advanced Materials, Vol. 29, Issue 38
  • DOI: 10.1002/adma.201602852

In-Plane Ferroelectricity in Thin Flakes of Van der Waals Hybrid Perovskite
journal, October 2018


Gate‐Tunable and Multidirection‐Switchable Memristive Phenomena in a Van Der Waals Ferroelectric
journal, May 2019

  • Xue, Fei; He, Xin; Retamal, José Ramón Durán
  • Advanced Materials, Vol. 31, Issue 29
  • DOI: 10.1002/adma.201901300

Spintronics of Hybrid Organic–Inorganic Perovskites: Miraculous Basis of Integrated Optoelectronic Devices
journal, June 2019

  • Liao, Kun; Hu, Xiaoyong; Cheng, Yinke
  • Advanced Optical Materials, Vol. 7, Issue 15
  • DOI: 10.1002/adom.201900350

Design of Single-Molecule Multiferroics for Efficient Ultrahigh-Density Nonvolatile Memories
journal, November 2018


Recent Progress in Two‐Dimensional Ferroelectric Materials
journal, November 2019


Intrinsic Dipole Coupling in 2D van der Waals Ferroelectrics for Gate‐Controlled Switchable Rectifier
journal, November 2019

  • Dai, Mingjin; Li, Kai; Wang, Fakun
  • Advanced Electronic Materials, Vol. 6, Issue 2
  • DOI: 10.1002/aelm.201900975

Metall‐Phosphor‐Trichalkogenide (MPCh 3 ): von der Synthese zu aktuellen Energieanwendungen
journal, April 2019

  • Gusmão, Rui; Sofer, Zdenek; Pumera, Martin
  • Angewandte Chemie, Vol. 131, Issue 28
  • DOI: 10.1002/ange.201810309

Metal Phosphorous Trichalcogenides (MPCh 3 ): From Synthesis to Contemporary Energy Challenges
journal, July 2019

  • Gusmão, Rui; Sofer, Zdenek; Pumera, Martin
  • Angewandte Chemie International Edition, Vol. 58, Issue 28
  • DOI: 10.1002/anie.201810309

Space‐confined microwave synthesis of ternary‐layered BiOCl crystals with high‐performance ultraviolet photodetection
journal, August 2019

  • Kang, Lixing; Yu, Xuechao; Zhao, Xiaoxu
  • InfoMat, Vol. 2, Issue 3
  • DOI: 10.1002/inf2.12033

Nanocrystalline Cellulose for Anisotropic Magnetoelectric Composites
journal, May 2018

  • Zong, Yan; Yue, Zhilian; Higgins, Michael J.
  • Macromolecular Materials and Engineering, Vol. 303, Issue 7
  • DOI: 10.1002/mame.201800099

Thickness‐Dependent In‐Plane Polarization and Structural Phase Transition in van der Waals Ferroelectric CuInP 2 S 6
journal, December 2019


The rise of two-dimensional van der Waals ferroelectrics
journal, May 2018

  • Wu, Menghao; Jena, Puru
  • Wiley Interdisciplinary Reviews: Computational Molecular Science, Vol. 8, Issue 5
  • DOI: 10.1002/wcms.1365

Progress and prospects in low-dimensional multiferroic materials
journal, January 2019

  • Hu, Ting; Kan, Erjun
  • Wiley Interdisciplinary Reviews: Computational Molecular Science, Vol. 9, Issue 5
  • DOI: 10.1002/wcms.1409

The emerging ferroic orderings in two dimensions
journal, November 2019


Quinuclidinium salt ferroelectric thin-film with duodecuple-rotational polarization-directions
journal, April 2017

  • You, Yu-Meng; Tang, Yuan-Yuan; Li, Peng-Fei
  • Nature Communications, Vol. 8, Issue 1
  • DOI: 10.1038/ncomms14934

Room-temperature ferroelectricity in MoTe2 down to the atomic monolayer limit
journal, April 2019


Multiferroicity in atomic van der Waals heterostructures
journal, June 2019


Van der Waals negative capacitance transistors
journal, July 2019


Tunable quadruple-well ferroelectric van der Waals crystals
journal, November 2019


Ferroelectric switching of a two-dimensional metal
journal, July 2018


Two-dimensional materials with piezoelectric and ferroelectric functionalities
journal, June 2018


Black phosphorus and its isoelectronic materials
journal, April 2019


Monolayer AgBiP 2 Se 6 : an atomically thin ferroelectric semiconductor with out-plane polarization
journal, January 2017


Valley polarization and ferroelectricity in a two-dimensional GaAsC 6 monolayer
journal, January 2019

  • Ma, Xikui; Ai, Haoqiang; Gao, Han
  • Physical Chemistry Chemical Physics, Vol. 21, Issue 7
  • DOI: 10.1039/c8cp07444e

Unique physicochemical properties of two-dimensional light absorbers facilitating photocatalysis
journal, January 2018

  • Liu, Gang; Zhen, Chao; Kang, Yuyang
  • Chemical Society Reviews, Vol. 47, Issue 16
  • DOI: 10.1039/c8cs00396c

Proton transfer ferroelectricity/multiferroicity in rutile oxyhydroxides
journal, January 2018

  • Wu, Menghao; Duan, Tianci; Lu, Chengliang
  • Nanoscale, Vol. 10, Issue 20
  • DOI: 10.1039/c8nr01456f

Room-temperature ferroelectricity and a switchable diode effect in two-dimensional α-In 2 Se 3 thin layers
journal, January 2018


Intrinsic multiferroicity in two-dimensional VOCl 2 monolayers
journal, January 2019

  • Ai, Haoqiang; Song, Xiaohan; Qi, Siyun
  • Nanoscale, Vol. 11, Issue 3
  • DOI: 10.1039/c8nr08270g

van der Waals forces control ferroelectric–antiferroelectric ordering in CuInP 2 S 6 and CuBiP 2 Se 6 laminar materials
journal, January 2018

  • Reimers, Jeffrey R.; Tawfik, Sherif Abdulkader; Ford, Michael J.
  • Chemical Science, Vol. 9, Issue 39
  • DOI: 10.1039/c8sc01274a

Anomalous polarization switching and permanent retention in a ferroelectric ionic conductor
journal, January 2020

  • Zhou, Shuang; You, Lu; Chaturvedi, Apoorva
  • Materials Horizons, Vol. 7, Issue 1
  • DOI: 10.1039/c9mh01215j

Two-dimensional ferromagnetism and driven ferroelectricity in van der Waals CuCrP 2 S 6
journal, January 2019

  • Lai, Youfang; Song, Zhigang; Wan, Yi
  • Nanoscale, Vol. 11, Issue 12
  • DOI: 10.1039/c9nr00738e

Robust two-dimensional ferroelectricity in single-layer γ-SbP and γ-SbAs
journal, January 2019

  • Shen, Shiying; Liu, Chang; Ma, Yandong
  • Nanoscale, Vol. 11, Issue 24
  • DOI: 10.1039/c9nr02265a

Peculiar piezoelectricity of atomically thin planar structures
journal, January 2020

  • Ghasemian, Mohammad B.; Daeneke, Torben; Shahrbabaki, Zahra
  • Nanoscale, Vol. 12, Issue 5
  • DOI: 10.1039/c9nr08063e

Size-effect in layered ferrielectric CuInP2S6
journal, October 2016

  • Chyasnavichyus, Marius; Susner, Michael A.; Ievlev, Anton V.
  • Applied Physics Letters, Vol. 109, Issue 17
  • DOI: 10.1063/1.4965837

Ferroelectric or non-ferroelectric: Why so many materials exhibit “ferroelectricity” on the nanoscale
journal, June 2017

  • Vasudevan, Rama K.; Balke, Nina; Maksymovych, Peter
  • Applied Physics Reviews, Vol. 4, Issue 2
  • DOI: 10.1063/1.4979015

The direct observation of ferromagnetic domain of single crystal CrSiTe 3
journal, May 2018

  • Wu, Shenghang; Wang, Lihai; Gao, Bin
  • AIP Advances, Vol. 8, Issue 5
  • DOI: 10.1063/1.5024576

Two-dimensional multiferroic semiconductors with coexisting ferroelectricity and ferromagnetism
journal, July 2018

  • Qi, Jingshan; Wang, Hua; Chen, Xiaofang
  • Applied Physics Letters, Vol. 113, Issue 4
  • DOI: 10.1063/1.5038037

Ab initio simulation studies on the room-temperature ferroelectricity in two-dimensional β -phase GeS
journal, May 2019

  • Yin, Huabing; Liu, Chang; Zheng, Guang-Ping
  • Applied Physics Letters, Vol. 114, Issue 19
  • DOI: 10.1063/1.5097425

Electric field control of the semiconductor-metal transition in two dimensional CuInP 2 S 6 /germanene van der Waals heterostructure
journal, June 2019

  • Zhu, Ziye; Chen, Xiaofang; Li, Wenbin
  • Applied Physics Letters, Vol. 114, Issue 22
  • DOI: 10.1063/1.5100240

Tuning ferroelectricity by charge doping in two-dimensional SnSe
journal, January 2020

  • Zhu, Liying; Lu, Yan; Wang, Li
  • Journal of Applied Physics, Vol. 127, Issue 1
  • DOI: 10.1063/1.5123296

Thickness dependence of domain size in 2D ferroelectric CuInP 2 S 6 nanoflakes
journal, November 2019

  • Chen, Liufang; Li, Yongqiang; Li, Chuanfu
  • AIP Advances, Vol. 9, Issue 11
  • DOI: 10.1063/1.5123366

The rise of 2D dielectrics/ferroelectrics
journal, December 2019

  • Osada, Minoru; Sasaki, Takayoshi
  • APL Materials, Vol. 7, Issue 12
  • DOI: 10.1063/1.5129447

γ-GeSe: A two-dimensional ferroelectric material with doping-induced ferromagnetism
journal, December 2019

  • Liu, Chang; Guan, Shan; Yin, Huabing
  • Applied Physics Letters, Vol. 115, Issue 25
  • DOI: 10.1063/1.5133022

Layered ferrielectric crystals CuInP 2 S(Se) 6 : a study from the first principles
journal, March 2019


Strain engineering to facilitate the occurrence of 2D ferroelectricity in CuInP 2 S 6 monolayer
journal, September 2019

  • Sun, Zhi-Zheng; Xun, Wei; Jiang, Li
  • Journal of Physics D: Applied Physics, Vol. 52, Issue 46
  • DOI: 10.1088/1361-6463/ab3aa7

Computational methods for 2D materials: discovery, property characterization, and application design
journal, November 2017

  • Paul, J. T.; Singh, A. K.; Dong, Z.
  • Journal of Physics: Condensed Matter, Vol. 29, Issue 47
  • DOI: 10.1088/1361-648x/aa9305

Origin of robust out-of-plane ferroelectricity in d 1 T -MoS 2 monolayer
journal, October 2019


Rashba splitting in bilayer transition metal dichalcogenides controlled by electronic ferroelectricity
journal, October 2019


Off-plane polarization ordering in metal chalcogen diphosphates from bulk to monolayer
journal, December 2017


Intrinsic Two-Dimensional Ferroelectricity with Dipole Locking
journal, May 2018


Standing Waves Induced by Valley-Mismatched Domains in Ferroelectric SnTe Monolayers
journal, May 2019


Frustrated Dipole Order Induces Noncollinear Proper Ferrielectricity in Two Dimensions
journal, August 2019


Quasi-one-dimensional ferroelectricity and piezoelectricity in WO X 4 halogens
journal, November 2019


Room temperature in-plane ferroelectricity in van der Waals In 2 Se 3
journal, July 2018


Origin of giant negative piezoelectricity in a layered van der Waals ferroelectric
journal, April 2019


Two-dimensional magnetic crystals and emergent heterostructure devices
journal, February 2019


Ferroelectric or non-ferroelectric: why so many materials exhibit ferroelectricity on the nanoscale
preprint, January 2017


Proton-transfer Ferroelectricity / Multiferroicity in Rutile Oxyhydroxides
text, January 2018


Frustrated Dipole Order Induces Noncollinear Proper Ferrielectricity in Two Dimensions
text, January 2019


Design of Single-Molecule Multiferroics for Efficient Ultrahigh-Density Nonvolatile Memories
journal, November 2018


Quinuclidinium salt ferroelectric thin-film with duodecuple-rotational polarization-directions
journal, April 2017

  • You, Yu-Meng; Tang, Yuan-Yuan; Li, Peng-Fei
  • Nature Communications, Vol. 8, Issue 1
  • DOI: 10.1038/ncomms14934

Room temperature in-plane ferroelectricity in van der Waals In 2 Se 3
journal, July 2018


Origin of giant negative piezoelectricity in a layered van der Waals ferroelectric
journal, April 2019