Atomically thin half-van der Waals metals enabled by confinement heteroepitaxy

Briggs, Natalie; Bersch, Brian; Wang, Yuanxi; Jiang, Jue; Koch, Roland J.; Nayir, Nadire; Wang, Ke; Kolmer, Marek; Ko, Wonhee; De La Fuente Duran, Ana; Subramanian, Shruti; Dong, Chengye; Shallenberger, Jeffrey; Fu, Mingming; Zou, Qiang; Chuang, Ya-Wen; Gai, Zheng; Li, An-Ping; Bostwick, Aaron; Jozwiak, Chris; Chang, Cui-Zu; Rotenberg, Eli; Zhu, Jun; van Duin, Adri C.  T.; Crespi, Vincent; Robinson, Joshua A.

doi:10.1038/s41563-020-0631-x

Atomically thin half-van der Waals metals enabled by confinement heteroepitaxy

Journal Article · Tue Mar 10 00:00:00 EDT 2020 · Nature Materials

DOI:https://doi.org/10.1038/s41563-020-0631-x· OSTI ID:1615216

^[1]; Bersch, Brian ^[1]; ^[1]; Jiang, Jue ^[1]; ^[2]; Nayir, Nadire ^[1]; Wang, Ke ^[1]; ^[3]; ^[3]; De La Fuente Duran, Ana ^[1]; Subramanian, Shruti ^[1]; Dong, Chengye ^[1]; Shallenberger, Jeffrey ^[1]; Fu, Mingming ^[3]; ^[3]; Chuang, Ya-Wen ^[1]; ^[3]; ^[3]; Bostwick, Aaron ^[4]; ^[4] more »

Pennsylvania State Univ., University Park, PA (United States)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS) and The Molecular Foundry (TMF)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)

Atomically thin two-dimensional (2D) metals may be key ingredients in next-generation quantum and optoelectronic devices. However, 2D metals must be stabilized against environmental degradation and integrated into heterostructure devices at the wafer scale. The high-energy interface between silicon carbide and epitaxial graphene provides an intriguing framework for stabilizing a diverse range of 2D metals. In this paper we demonstrate large-area, environmentally stable, single-crystal 2D gallium, indium and tin that are stabilized at the interface of epitaxial graphene and silicon carbide. The 2D metals are covalently bonded to SiC below but present a non-bonded interface to the graphene overlayer; that is, they are ‘half van der Waals’ metals with strong internal gradients in bonding character. These non-centrosymmetric 2D metals offer compelling opportunities for superconducting devices, topological phenomena and advanced optoelectronic properties. For example, the reported 2D Ga is a superconductor that combines six strongly coupled Ga-derived electron pockets with a large nearly free-electron Fermi surface that closely approaches the Dirac points of the graphene overlayer.

View Accepted Manuscript (DOE)

Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Center for Nanophase Materials Science (CNMS)

Sponsoring Organization:: Alfred P. Sloan Research Fellowship; China Scholarship Council (CSC); National Science Foundation (NSF); Northrop Grumman Mission Systems’ University Research Program; Semiconductor Research Corporation Intel/Global Research Collaboration Fellowship Program; USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231; AC05-00OR22725

OSTI ID:: 1615216

Alternate ID(s):: OSTI ID: 1777956

Journal Information:: Nature Materials, Journal Name: Nature Materials Journal Issue: 6 Vol. 19; ISSN 1476-1122

Publisher:: Springer Nature - Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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First-principles study for low-spin LaCoO 3 with a structurally consistent Hubbard U Hsu, Han; Umemoto, Koichiro; Cococcioni, Matteo Physical Review B, Vol. 79, Issue 12 https://doi.org/10.1103/physrevb.79.125124	journal	March 2009
Optimal representation of the polarization propagator for large-scale G W calculations Umari, P.; Stenuit, Geoffrey; Baroni, Stefano Physical Review B, Vol. 79, Issue 20 https://doi.org/10.1103/physrevb.79.201104	journal	May 2009
Revisiting magnetic coupling in transition-metal-benzene complexes with maximally localized Wannier functions Weng, Hongming; Ozaki, Taisuke; Terakura, Kiyoyuki Physical Review B, Vol. 79, Issue 23 https://doi.org/10.1103/physrevb.79.235118	journal	June 2009
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Tight-binding analysis of Si and GaAs ultrathin bodies with subatomic wave-function resolution Tan, Yaohua P.; Povolotskyi, Michael; Kubis, Tillmann Physical Review B, Vol. 92, Issue 8 https://doi.org/10.1103/physrevb.92.085301	journal	August 2015
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Impact of strain on the electronic properties of InAs/GaSb quantum well systems Tiemann, L.; Mueller, S.; Wu, Q. -S. Physical Review B, Vol. 95, Issue 11 https://doi.org/10.1103/physrevb.95.115108	journal	March 2017
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Two-dimensional hyperferroelectric metals: A different route to ferromagnetic-ferroelectric multiferroics Luo, Wei; Xu, Ke; Xiang, Hongjun Physical Review B, Vol. 96, Issue 23 https://doi.org/10.1103/physrevb.96.235415	journal	December 2017
Engineering topological phases in the Luttinger semimetal α -Sn Zhang, Dongqin; Wang, Huaiqiang; Ruan, Jiawei Physical Review B, Vol. 97, Issue 19 https://doi.org/10.1103/physrevb.97.195139	journal	May 2018
Impact of complex adatom-induced interactions on quantum spin Hall phases Santos, Flaviano José dos; Bahamon, Dario A.; Muniz, Roberto B. Physical Review B, Vol. 98, Issue 8 https://doi.org/10.1103/physrevb.98.081407	journal	August 2018
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Exotic Multigap Structure in UPt 3 Unveiled by a First-Principles Analysis Nomoto, Takuya; Ikeda, Hiroaki Physical Review Letters, Vol. 117, Issue 21 https://doi.org/10.1103/physrevlett.117.217002	journal	November 2016
Experimental and Ab Initio Ultrafast Carrier Dynamics in Plasmonic Nanoparticles Brown, Ana M.; Sundararaman, Ravishankar; Narang, Prineha Physical Review Letters, Vol. 118, Issue 8 https://doi.org/10.1103/physrevlett.118.087401	journal	February 2017
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Lattice Energetics and Correlation-Driven Metal-Insulator Transitions: The Case of Ca 2 RuO 4 Han, Qiang; Millis, Andrew Physical Review Letters, Vol. 121, Issue 6 https://doi.org/10.1103/physrevlett.121.067601	journal	August 2018
Strongly Correlated Materials from a Numerical Renormalization Group Perspective: How the Fermi-Liquid State of Sr 2 RuO 4 Emerges Kugler, Fabian B.; Zingl, Manuel; Strand, Hugo U. R. Physical Review Letters, Vol. 124, Issue 1 https://doi.org/10.1103/physrevlett.124.016401	journal	January 2020
Entropic elasticity and negative thermal expansion in a simple cubic crystal Wendt, David; Bozin, Emil; Neuefeind, Joerg Science Advances, Vol. 5, Issue 11 https://doi.org/10.1126/sciadv.aay2748	journal	November 2019
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