Superconducting high pressure CaSi2 phase with Tc up to 14 K

被引：95

作者：

Sanfilippo, S

Elsinger, H

Núñez-Regueiro, M

Laborde, O

Le Floch, S

Affronte, M

Olcese, GL

Palenzona, A

机构：

[1] CNRS, Ctr Rech Tres Basses Temp, F-38042 Grenoble, France

[2] CNRS, Lab Cristallog, F-38042 Grenoble, France

[3] Univ Modena, INFM, I-41100 Modena, Italy

[4] Univ Modena, Dept Fis, I-41100 Modena, Italy

[5] Univ Genoa, INFM, I-16146 Genoa, Italy

[6] Univ Genoa, Dipartimento Chim & Chim Ind, I-16146 Genoa, Italy

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.61.R3800

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied the occurrence of superconductivity under pressure in the CaSi2 family of compounds, namely the semimetallic trigonal phase and the alpha-ThSi2-type tetragonal one. Although only the latter is superconducting (T-c = 1.56 K) at ambient pressure, starting from the trigonal phase and applying high pressure (>12 GPa) we have found a new superconducting phase with T-c(onset) similar to 14 K, among the highest ever found in silicon based materials.

引用

页码：R3800 / R3803

页数：4

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