Large microwave inductance of granular boron-doped diamond superconducting films

被引：5

作者：

Oripov, Bakhrom ^{[1
]}

Kumar, Dinesh ^{[2
,3
]}

Garcia, Cougar ^{[1
,4
]}

Hemmer, Patrick ^{[1
]}

Venkatesan, T. ^{[5
,6
,7
]}

Rao, M. S. Ramachandra ^{[2
,3
]}

Anlage, Steven M. ^{[1
,4
]}

机构：

[1] Univ Maryland, Quantum Mat Ctr, Phys Dept, College Pk, MD 20742 USA

[2] Indian Inst Technol Madras, Quantum Ctr Diamond & Emergent Mat QuCenDiEM Grp, Nano Funct Mat Technol Ctr, Dept Phys, Chennai 600036, Tamil Nadu, India

[3] Indian Inst Technol Madras, Mat Sci Res Ctr, Chennai 600036, Tamil Nadu, India

[4] Univ Maryland, Mat Sci & Engn Dept, College Pk, MD 20742 USA

[5] Natl Univ Singapore, NUSNNI NanoCore, Singapore 117411, Singapore

[6] Neocera LLC, Beltsville, MD 20705 USA

[7] Univ Oklahoma, Ctr Quantum Res & Technol, 440 W Brooks St, Norman, OK 73019 USA

来源：

APPLIED PHYSICS LETTERS | 2021年 / 118卷 / 24期

关键词：

MAGNETIC PENETRATION DEPTH; SURFACE IMPEDANCE; THIN-FILMS; RESISTANCE; TRANSITIONS; FREQUENCY;

D O I：

10.1063/5.0051227

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Boron-doped diamond granular thin films are known to exhibit superconductivity with an optimal critical temperature of T-c = 7.2 K. Here, we report the measured in-plane complex surface impedance of boron-doped diamond films in the microwave frequency range using a resonant technique. Experimentally measured inductance values are in good agreement with estimates obtained from the normal state sheet resistance of the material. The magnetic penetration depth temperature dependence is consistent with that of a fully gapped s-wave superconductor. Boron-doped diamond films should find application where high kinetic inductance is needed, such as microwave kinetic inductance detectors and quantum impedance devices.

引用

页数：7

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