DataVXACS NanoPaper
journal article·2025-06-10Open access

Germanene-Based Two-Dimensional Magnet with Tunable Properties

Andrey V. Matetskiy, Alessandro Barla, Paolo Moras, Carlo Carbone, Valeria Milotti, Carlo Alberto Brondin, Zipporah Rini Benher, Mariia Holub, Philippe Ohresser, Edwige Otero, Fadi Choueikani, Igor A. Shvets, Alexey N. Mihalyuk, Sergey V. Eremeev, Polina M. Sheverdyaeva

ACS Nano· Volume 19· Issue 22
Publisher pageOpen full text
Source abstract

Abstract

Magnetic order engineering in two-dimensional Dirac systems is of great interest for theoretical and technological exploration. Up to now, the experimental advances in this field mostly concerned graphene monolayers. Here, we report a comprehensive study of a monolayer-thick germanene-like sheet in contact with gadolinium atoms. Direct observations supported by first-principles calculations reveal the fingerprints of the Dirac fermions in the electronic structure and noncollinear antiferromagnetism. The hybridization of the germanene layer with Gd atoms leads to a large and tunable gap in the Dirac states that carry a nonzero spin-Berry curvature. We discovered that cesium-induced controlled electron doping can switch the system into a ferromagnetic state and then back to the antiferromagnetism at saturated cesium monolayer limit. We explain these reversible magnetic transitions by the oscillatory behavior of the Ruderman-Kittel-Kasuya-Yosida interaction and suggest that this system could find application in magnetoelectronics and spintronics.
Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials

OpenAlex topics: Graphene research and applications · Topological Materials and Phenomena · Quantum and electron transport phenomena

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

CNR-Istituto di Struttura della Materia (CNR-ISM), Strada Statale 14, km 163.5, 34149 Trieste, Italy

Peter Grünberg Institute (PGI-3)

Dipartimento di Fisica e Astronomia “Galileo Galilei”

Università degli Studi di Padova

Synchrotron-SOLEIL, L’Orme des Merisiers

Tomsk State University

Institute of High Technologies and Advanced Materials

Far Eastern Federal University

Institute of Automation and Control Processes FEB RAS

Institute of Strength Physics and Materials Science SB RAS

St. Petersburg State University, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia

Funding

Russian Science Foundation · Saint Petersburg State University · Ministero dell'Universit?? e della Ricerca · NextGenerationEU · Ministry of Education and Science of the Russian Federation · IACP FEB RAS · ISPMS SB RAS

References (51)

Show source-provided references
1. 10.1063/5.003997910.1063/5.0039979 ↗
2. 10.1088/2053-1583/aacfc110.1088/2053-1583/aacfc1 ↗
3. 10.1103/PhysRevB.104.22442710.1103/PhysRevB.104.224427 ↗
4. 10.1103/PhysRevB.109.20513910.1103/PhysRevB.109.205139 ↗
5. 10.1038/s41565-018-0135-x10.1038/s41565-018-0135-x ↗
6. 10.1038/s41565-018-0063-910.1038/s41565-018-0063-9 ↗
7. 10.1021/acs.nanolett.6b0305210.1021/acs.nanolett.6b03052 ↗
8. 10.1021/acs.nanolett.9b0516510.1021/acs.nanolett.9b05165 ↗
9. 10.1038/s41565-021-00885-510.1038/s41565-021-00885-5 ↗
10. 10.1038/s41565-019-0438-610.1038/s41565-019-0438-6 ↗
11. 10.1021/acs.nanolett.4c0273110.1021/acs.nanolett.4c02731 ↗
12. 10.1103/PhysRevLett.114.01660310.1103/PhysRevLett.114.016603 ↗
13. 10.1126/science.aad803810.1126/science.aad8038 ↗
14. 10.1038/ncomms417110.1038/ncomms4171 ↗
15. 10.1016/S0921-5107(99)00059-810.1016/S0921-5107(99)00059-8 ↗
16. 10.1103/PhysRevB.84.12541610.1103/PhysRevB.84.125416 ↗
17. 10.1103/PhysRevB.100.08543410.1103/PhysRevB.100.085434 ↗
18. 10.3390/ma1415410410.3390/ma14154104 ↗
19. 10.1002/adma.20241232110.1002/adma.202412321 ↗
20. 10.1007/s12274-020-3027-y10.1007/s12274-020-3027-y ↗
21. 10.1039/D3NR03398H10.1039/D3NR03398H ↗
22. 10.1103/PhysRevLett.102.23680410.1103/PhysRevLett.102.236804 ↗
23. 10.1039/C9MH00444K10.1039/C9MH00444K ↗
24. 10.1039/D4TC00173G10.1039/D4TC00173G ↗
25. 10.1039/D1TC05350G10.1039/D1TC05350G ↗
26. 10.1088/0953-8984/27/44/44300210.1088/0953-8984/27/44/443002 ↗
27. 10.7566/JPSJ.84.12100310.7566/JPSJ.84.121003 ↗
28. 10.1038/s41598-022-23058-310.1038/s41598-022-23058-3 ↗
29. 10.1021/am501022x10.1021/am501022x ↗
30. 10.1088/1367-2630/15/3/03303410.1088/1367-2630/15/3/033034 ↗
31. 10.1021/acsnano.6b0759310.1021/acsnano.6b07593 ↗
32. 10.1103/PhysRevB.108.11515510.1103/PhysRevB.108.115155 ↗
33. 10.1103/PhysRevB.100.03544510.1103/PhysRevB.100.035445 ↗
34. 10.1016/j.physe.2013.12.01610.1016/j.physe.2013.12.016 ↗
35. 10.1002/inf2.1236510.1002/inf2.12365 ↗
36. 10.1143/JPSJ.21.113710.1143/JPSJ.21.1137 ↗
37. 10.1103/PhysRevB.58.358410.1103/PhysRevB.58.3584 ↗
38. 10.1063/1.486119110.1063/1.4861191 ↗
39. 10.1107/S160057751400367110.1107/S1600577514003671 ↗
40. 10.1103/PhysRevB.47.55810.1103/PhysRevB.47.558 ↗
41. 10.1103/PhysRevB.50.1795310.1103/PhysRevB.50.17953 ↗
42. 10.1103/PhysRevLett.77.386510.1103/PhysRevLett.77.3865 ↗
43. 10.1103/PhysRevB.59.175810.1103/PhysRevB.59.1758 ↗
44. 10.1038/s42254-023-00655-310.1038/s42254-023-00655-3 ↗
45. 10.1063/1.240466310.1063/1.2404663 ↗
46. 10.1103/PhysRevB.57.150510.1103/PhysRevB.57.1505 ↗
47. 10.1103/PhysRevB.89.04140710.1103/PhysRevB.89.041407 ↗
48. 10.1103/PhysRevB.91.04111610.1103/PhysRevB.91.041116 ↗
49. 10.1088/1361-648X/ab51ff10.1088/1361-648X/ab51ff ↗
50. 10.1103/PhysRevB.99.23511310.1103/PhysRevB.99.235113 ↗
51. 10.1038/s41524-021-00498-510.1038/s41524-021-00498-5 ↗