Ambient Pressure Structural Quantum Critical Point in the Phase Diagram of (CaxSr1-x)3Rh4Sn13

被引：88

作者：

Goh, S. K. ^{[1
,2
]}

Tompsett, D. A. ^{[3
]}

Saines, P. J. ^{[4
]}

Chang, H. C. ^{[2
]}

Matsumoto, T. ^{[5
]}

Imai, M. ^{[5
]}

Yoshimura, K. ^{[5
]}

Grosche, F. M. ^{[2
]}

机构：

[1] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China

[2] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[3] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

[4] Univ Oxford, Dept Chem, Inorgan Chem Lab, Oxford OX1 3QR, England

[5] Kyoto Univ, Grad Sch Sci, Dept Chem, Kyoto 6068502, Japan

来源：

PHYSICAL REVIEW LETTERS | 2015年 / 114卷 / 09期

基金：

英国工程与自然科学研究理事会;

关键词：

SUPERCONDUCTIVITY;

D O I：

10.1103/PhysRevLett.114.097002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The quasiskutterudite superconductor Sr3Rh4Sn13 features a pronounced anomaly in electrical resistivity at T* similar to 138 K. We show that the anomaly is caused by a second-order structural transition, which can be tuned to 0 K by applying physical pressure and chemical pressure via the substitution of Ca for Sr. A broad superconducting dome is centered around the structural quantum critical point. Detailed analysis of the tuning parameter dependence of T* as well as insights from lattice dynamics calculations strongly support the existence of a structural quantum critical point at ambient pressure when the fraction of Ca is 0.9 (i.e., x(c) = 0.9). This establishes the (CaxSr1-x)(3)Rh4Sn13 series as an important system for exploring the physics of structural quantum criticality without the need of applying high pressures.

引用

页数：5

共 32 条

[1]

[Anonymous], Quantum Phase Transitions-Rosenbaum Lab, DOI DOI 10.1017/CBO9780511973765

[2]

[Anonymous], 2013, CRYSALISPRO VERS 171

[3] Superconducting and magnetic properties of Sr3Ir4Sn13 [J].

Biswas, P. K. ;

Amato, A. ;

Khasanov, R. ;

Luetkens, H. ;

Wang, Kefeng ;

Petrovic, C. ;

Cook, R. M. ;

Lees, M. R. ;

Morenzoni, E. .

PHYSICAL REVIEW B, 2014, 90 (14)

[4] SYNCHROTRON X-RAY-POWDER DIFFRACTION STUDY OF THE PHASE-1' COMPOUND - SNLA3RH4SN12 [J].

BORDET, P ;

COX, DE ;

ESPINOSA, GP ;

HODEAU, JL ;

MAREZIO, M .

SOLID STATE COMMUNICATIONS, 1991, 78 (05) :359-366

[5] ISODISPLACE:: a web-based tool for exploring structural distortions [J].

Campbell, Branton J. ;

Stokes, Harold T. ;

Tanner, David E. ;

Hatch, Dorian M. .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2006, 39 :607-614

[6] OLEX2: a complete structure solution, refinement and analysis program [J].

Dolomanov, Oleg V. ;

Bourhis, Luc J. ;

Gildea, Richard J. ;

Howard, Judith A. K. ;

Puschmann, Horst .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2009, 42 :339-341

[7] CRYSTAL-GROWTH AND CRYSTAL-CHEMICAL INVESTIGATION OF SYSTEMS CONTAINING NEW SUPERCONDUCTING AND-OR MAGNETIC TERNARY STANNIDES [J].

ESPINOSA, GP .

MATERIALS RESEARCH BULLETIN, 1980, 15 (06) :791-798

[8] Unconventional charge-density wave in Sr3Ir4Sn13 cubic superconductor revealed by optical spectroscopy study [J].

Fang, A. F. ;

Wang, X. B. ;

Zheng, P. ;

Wang, N. L. .

PHYSICAL REVIEW B, 2014, 90 (03)

[9] Enhancement of superconductivity and evidence of structural instability in intercalated graphite CaC6 under high pressure [J].

Gauzzi, A. ;

Takashima, S. ;

Takeshita, N. ;

Terakura, C. ;

Takagi, H. ;

Emery, N. ;

Herold, C. ;

Lagrange, P. ;

Loupias, G. .

PHYSICAL REVIEW LETTERS, 2007, 98 (06)

[10] Quantum criticality in heavy-fermion metals [J].

Gegenwart, Philipp ;

Si, Qimiao ;

Steglich, Frank .

NATURE PHYSICS, 2008, 4 (03) :186-197

← 1 2 3 4 →