The first molecular superconductor based on BEDT-TTF radical cation salt with paramagnetic tris(oxalato)ruthenate anion

被引：33

作者：

Prokhorova, Tatiana G. ^{[1
]}

Zorina, Leokadiya V. ^{[2
,3
]}

Simonov, Sergey V. ^{[2
,3
]}

Zverev, Vladimir N. ^{[2
,3
]}

Canadell, Enric ^{[4
]}

Shibaeva, Rimma P. ^{[2
]}

Yagubskii, Eduard B. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Problems Chem Phys, Chernogolovka 142432, MD, Russia

[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, MD, Russia

[3] Moscow Inst Phys & Technol, Dolgoprudnyi, Moscow Region, Russia

[4] CSIC, Inst Ciencia Mat Barcelona, E-08193 Barcelona, Spain

来源：

CRYSTENGCOMM | 2013年 / 15卷 / 35期

关键词：

CHARGE-TRANSFER SALTS; TRANSPORT-PROPERTIES; ELECTRONIC-STRUCTURE; PHYSICAL-PROPERTIES; MAGNETIC-PROPERTIES; INCLUDED SOLVENT; GUEST MOLECULES; FE; BIS(ETHYLENEDITHIO)TETRATHIAFULVALENE; CONDUCTORS;

D O I：

10.1039/c3ce40919h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The first molecular superconductor based on BEDT-TTF radical cation salt with the paramagnetic tris(oxalato) ruthenate anion, beta ''-(BEDT-TTF)(4)K-x(H3O)(1-x)[Ru-III(ox)(3)]C6H5Br (x similar to 0.8), is synthesized and its crystal and electronic structure as well as transport and magnetotransport properties are studied. The single crystals have monoclinic C2/c symmetry and beta ''-packing of the conducting BEDT-TTF layer. The samples were found to be superconductors with T-c = 2.8-6.3 K (depending on the sample). Well pronounced Shubnikov-de Haas oscillations are observed in the field range 7-17 T. The Fourier spectrum of the oscillations mainly consists of two frequencies, which correspond to the Fermi surface cross sections 6.3% and 0.85% of the Brillouin zone. The first one with good accuracy corresponds to the calculated cross section 7.5%, the origin of the second one is discussed. Semiconducting orthorhombic phase 'pseudo-kappa'-(BEDT-TTF)(4)K-x(H3O)(1-x)[Ru-III(ox)(3)]C6H5CN is also synthesized and studied.

引用

页码：7048 / 7055

页数：8

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