Superconductivity and Shubnikov - de Haas effect in polycrystalline Cd3As2 thin films

被引：19

作者：

Oveshnikov, Leonid N. ^{[1
,2
]}

Davydov, Alexander B. ^{[2
]}

Suslov, Alexey, V ^{[3
]}

Ril, Alexey, I ^{[4
]}

Marenkin, Sergey F. ^{[4
,5
]}

Vasiliev, Alexander L. ^{[1
,6
]}

Aronzon, Boris A. ^{[2
]}

机构：

[1] Natl Res Ctr, Kurchatov Inst, Moscow 123182, Russia

[2] Russian Acad Sci, PN Lebedev Phys Inst, Moscow 119991, Russia

[3] Natl High Magnet Field Lab, Tallahassee, FL 32310 USA

[4] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia

[5] Natl Univ Sci & Technol MISiS, Moscow 119049, Russia

[6] Moscow Inst Phys & Technol, Dolgoprudny, Dolgoprudnyi 141700, Moscow Region, Russia

来源：

SCIENTIFIC REPORTS | 2020年 / 10卷 / 01期

基金：

美国国家科学基金会; 俄罗斯科学基金会;

关键词：

DIRAC; GROWTH;

D O I：

10.1038/s41598-020-61376-6

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：

In this study we observed the reproducible superconducting state in Cd3As2 thin films without any external stimuli. Comparison with our previous results reveals similar qualitative behavior for films synthesized by different methods, while the difference in the values of the critical parameters clearly shows the possibility to control this state. The X-ray diffraction measurements demonstrate the presence of the tetragonal Cd3As2 crystal phase in studied films. Measurements of high-field magnetoresistance reveal pronounced Shubnikov - de Haas oscillations. The analysis of these oscillations suggests that, due to high carrier concentration in studied Cd3As2 films, the initial Dirac semimetal phase may be partially suppressed, which, however, does not contradict with possible topological nature of the observed superconductivity.

引用

页数：7

共 50 条

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