Three-dimensional quantum Griffiths singularity in bulk iron-pnictide superconductors

被引：0

作者：

Liu, Shao-Bo ^{[1
]}

Tian, Congkuan ^{[1
,2
]}

Cai, Yongqing ^{[3
]}

Cui, Hang ^{[1
]}

Wei, Xinjian ^{[2
]}

Chen, Mantang ^{[1
]}

Zhao, Yang ^{[1
]}

Sui, Yuan ^{[1
]}

Guan, Shuyue ^{[1
]}

Jia, Shuang ^{[1
]}

Zhang, Yu ^{[2
]}

Feng, Ya ^{[2
]}

Li, Jiankun ^{[2
]}

Cui, Jian ^{[2
]}

Song, Yuanjun ^{[2
]}

Hao, Tingting ^{[2
]}

Chen, Chaoyu ^{[4
]}

Chen, Jian-Hao ^{[1
,2
,5
,6
]}

机构：

[1] Peking Univ, Int Ctr Quantum Mat, Sch Phys, Beijing 100091, Peoples R China

[2] Beijing Acad Quantum Informat Sci, Beijing 100094, Peoples R China

[3] Dalian Univ Technol, Sch Phys, Dalian 116024, Peoples R China

[4] Southern Univ Sci & Technol, Shenzhen Inst Quantum Sci & Engn, Dept Phys, Shenzhen 518055, Peoples R China

[5] Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100091, Peoples R China

[6] Hefei Natl Lab, Hefei 230026, Peoples R China

来源：

NATIONAL SCIENCE REVIEW | 2024年 / 11卷 / 12期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

quantum phase transition; superconductor-metal transition; iron-based superconductor; quantum Griffiths singularity; INSULATOR TRANSITION; PHASE-TRANSITIONS; BEHAVIOR;

D O I：

10.1093/nsr/nwae220

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The quantum Griffiths singularity (QGS) is a phenomenon driven by quenched disorders that break conventional scaling invariance and result in a divergent dynamic critical exponent during quantum phase transitions (QPT). While this phenomenon has been well-documented in low-dimensional conventional superconductors and in three-dimensional (3D) magnetic metal systems, its presence in 3D superconducting systems and in unconventional high-temperature superconductors (high-T-c SCs) remains unclear. In this study, we report the observation of robust QGS in the superconductor-metal transition (SMT) of both quasi-2D and 3D anisotropic unconventional high-T-c superconductor CaFe1-xNixAsF (x <5%) bulk single crystals, where the QGS states persist to up to 5.3 K. A comprehensive quantum phase diagram is established that delineates the 3D anisotropic QGS of SMT induced by perpendicular and parallel magnetic fields. Our findings reveal the universality of QGS in 3D superconducting systems and unconventional high-T-c SCs, thereby substantially expanding the range of applicability of QGS.

引用

页数：8

共 48 条

[1] Biscaras J, 2013, NAT MATER, V12, P542, DOI [10.1038/NMAT3624, 10.1038/nmat3624]
[2] Superconductor-insulator transition in La2-xSrxCuO4 at the pair quantum resistance
Bollinger, A. T.
Dubuis, G.
Yoon, J.
Pavuna, D.
Misewich, J.
Bozovic, I.
[J]. NATURE, 2011, 472 (7344) : 458 - 460
[3] Superconducting, insulating and anomalous metallic regimes in a gated two-dimensional semiconductor-superconductor array
Bottcher, C. G. L.
Nichele, F.
Kjaergaard, M.
Suominen, H. J.
Shabani, J.
Palmstrom, C. J.
Marcus, C. M.
[J]. NATURE PHYSICS, 2018, 14 (11) : 1138 - +
[4] RANDOM TRANSVERSE FIELD ISING SPIN CHAINS
FISHER, DS
[J]. PHYSICAL REVIEW LETTERS, 1992, 69 (03) : 534 - 537
[5] QUANTUM PHASE-TRANSITIONS IN DISORDERED 2-DIMENSIONAL SUPERCONDUCTORS
FISHER, MPA
[J]. PHYSICAL REVIEW LETTERS, 1990, 65 (07) : 923 - 926
[6] PRESENCE OF QUANTUM DIFFUSION IN 2 DIMENSIONS - UNIVERSAL RESISTANCE AT THE SUPERCONDUCTOR-INSULATOR TRANSITION
FISHER, MPA
GRINSTEIN, G
GIRVIN, SM
[J]. PHYSICAL REVIEW LETTERS, 1990, 64 (05) : 587 - 590
[7] Disorder and quantum fluctuations in superconducting films in strong magnetic fields
Galitski, VM
Larkin, AI
[J]. PHYSICAL REVIEW LETTERS, 2001, 87 (08) : 87001 - 1
[8] Pressure-induced superconductivity in parent CaFeAsF single crystals
Gao, Bo
Ma, Yonghui
Mu, Gang
Xiao, Hong
[J]. PHYSICAL REVIEW B, 2018, 97 (17)
[9] NONANALYTIC BEHAVIOR ABOVE CRITICAL POINT IN A RANDOM ISING FERROMAGNET
GRIFFITHS, RB
[J]. PHYSICAL REVIEW LETTERS, 1969, 23 (01) : 17 - +
[10] Angular dependence of the Fermi surface cross-section area and magnetoresistance in quasi-two-dimensional metals
Grigoriev, P. D.
[J]. PHYSICAL REVIEW B, 2010, 81 (20)

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