Charge density wave quantum critical point with strong enhancement of superconductivity

被引：0

作者：

Gruner, Thomas ^{[1
]}

Jang, Dongjin ^{[1
]}

Huesges, Zita ^{[1
]}

Cardoso-Gil, Raul ^{[1
]}

Fecher, Gerhard H. ^{[1
]}

Koza, Michael M. ^{[2
]}

Stockert, Oliver ^{[1
]}

Mackenzie, Andrew P. ^{[1
]}

Brando, Manuel ^{[1
]}

Geibel, Christoph ^{[1
]}

机构：

[1] Max Planck Inst Chem Phys Solids, Nothnitzer Str 40, D-01187 Dresden, Germany

[2] Inst Laue Langevin, 6 Rue Jules Horowitz,BP 156, F-38042 Grenoble 9, France

来源：

NATURE PHYSICS | 2017年 / 13卷 / 10期

关键词：

FLUCTUATIONS; TEMPERATURE; TRANSITION; ORDER; COMPETITION; MAGNETISM; DOME;

D O I：

10.1038/NPHYS4191

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Quantum critical points (QCPs), at which a second-order phase transition is continuously suppressed to zero temperature, are currently one of the central topics in solid-state physics(1,2). The strong interest emerges from observations of very unusual properties at QCPs such as the onset of unconventional superconductivity (SC)(3). While QCPs found at the disappearance of magnetic order are quite common and intensively studied, a QCP that results from a structural transition is scarce and poorly investigated. Here, we report on the observation of a charge density wave (CDW) type of structural ordering in LuPt2In with a second-order transition at T-CDW = 490 K. Substituting Pd for Pt suppresses TCDW continuously towards T = 0, leading to a QCP at 58% Pd substitution. We find a strong enhancement of bulk SC just at the QCP, pointing to a new type of interaction between CDW and SC.

引用

页码：967 / +

页数：7

共 37 条

[1] Strong-coupling theory of heavy-fermion criticality [J].

Abrahams, Elihu ;

Schmalian, Joerg ;

Woefle, Peter .

PHYSICAL REVIEW B, 2014, 90 (04)

[2] Strongly coupled charge-density wave transition in single-crystal Lu5Ir4Si10 [J].

Becker, B ;

Patil, NG ;

Ramakrishnan, S ;

Menovsky, AA ;

Nieuwenhuys, GJ ;

Mydosh, JA .

PHYSICAL REVIEW B, 1999, 59 (11) :7266-7269

[3]

BERGMANN G, 1973, Z PHYS, V263, P59, DOI 10.1007/BF02351862

[4] Strong enhancement of s-wave superconductivity near a quantum critical point of Ca3Ir4Sn13 [J].

Biswas, P. K. ;

Guguchia, Z. ;

Khasanov, R. ;

Chinotti, M. ;

Li, L. ;

Wang, Kefeng ;

Petrovic, C. ;

Morenzoni, E. .

PHYSICAL REVIEW B, 2015, 92 (19)

[5]

Chang J, 2012, NAT PHYS, V8, P871, DOI [10.1038/NPHYS2456, 10.1038/nphys2456]

[6] Quantum criticality [J].

Coleman, P ;

Schofield, AJ .

NATURE, 2005, 433 (7023) :226-229

[7] Superconducting dome in MoS2 and TiSe2 generated by quasiparticle-phonon coupling [J].

Das, Tanmoy ;

Dolui, Kapildeb .

PHYSICAL REVIEW B, 2015, 91 (09)

[8] Order parameter fluctuations at a buried quantum critical point [J].

Feng, Yejun ;

Wang, Jiyang ;

Jaramillo, R. ;

van Wezel, Jasper ;

Haravifard, S. ;

Srajer, G. ;

Liu, Y. ;

Xu, Z. -A. ;

Littlewood, P. B. ;

Rosenbaum, T. F. .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2012, 109 (19) :7224-7229

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

Gegenwart, Philipp ;

Si, Qimiao ;

Steglich, Frank .

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

[10] Long-Range Incommensurate Charge Fluctuations in (Y,Nd)Ba2Cu3O6+x [J].

Ghiringhelli, G. ;

Le Tacon, M. ;

Minola, M. ;

Blanco-Canosa, S. ;

Mazzoli, C. ;

Brookes, N. B. ;

De Luca, G. M. ;

Frano, A. ;

Hawthorn, D. G. ;

He, F. ;

Loew, T. ;

Sala, M. Moretti ;

Peets, D. C. ;

Salluzzo, M. ;

Schierle, E. ;

Sutarto, R. ;

Sawatzky, G. A. ;

Weschke, E. ;

Keimer, B. ;

Braicovich, L. .

SCIENCE, 2012, 337 (6096) :821-825

← 1 2 3 4 →