Artificial relativistic molecules

被引：5

作者：

Park, Jae Whan ^{[1
]}

Kim, Hyo Sung ^{[1
,2
]}

Brumme, Thomas ^{[3
]}

Heine, Thomas ^{[3
,4
,5
]}

Yeom, Han Woong ^{[1
,2
]}

机构：

[1] Inst for Basic Sci Korea, Ctr Artificial Low Dimens Elect Syst, 77 Cheongam Ro, Pohang 7907884, South Korea

[2] Pohang Univ Sci & Technol, Dept Phys, Pohang 790784, South Korea

[3] Univ Leipzig, Dept Chem, Leipzig, Germany

[4] Tech Univ Dresden, Fac Chem & Food Chem, Sch Sci, D-01062 Dresden, Germany

[5] Helmholtz Ctr Dresden Rossendorf, Leipzig Res Branch, Inst Resource Ecol, Permoserstr 15, D-04318 Leipzig, Germany

来源：

NATURE COMMUNICATIONS | 2020年 / 11卷 / 01期

关键词：

SPIN-ORBIT; ELECTRONIC-STRUCTURE; APPROXIMATION; MONOLAYERS; CHAINS; ORDER; AU;

D O I：

10.1038/s41467-020-14635-z

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We fabricate artificial molecules composed of heavy atom lead on a van der Waals crystal. Pb atoms templated on a honeycomb charge-order superstructure of IrTe2 form clusters ranging from dimers to heptamers including benzene-shaped ring hexamers. Tunneling spectroscopy and electronic structure calculations reveal the formation of unusual relativistic molecular orbitals within the clusters. The spin-orbit coupling is essential both in forming such Dirac electronic states and stabilizing the artificial molecules by reducing the adatom-substrate interaction. Lead atoms are found to be ideally suited for a maximized relativistic effect. This work initiates the use of novel two-dimensional orderings to guide the fabrication of artificial molecules of unprecedented properties.

引用

页数：6

共 44 条

[21] Long-range adsorbate interactions mediated by a two-dimensional electron gas [J].