Anisotropic Hc2 , thermodynamic and transport measurements, and pressure dependence of Tc in K2Cr3As3 single crystals

Kong, Tai; Bud'ko, Sergey L.; Canfield, Paul C.

doi:10.1103/PhysRevB.91.020507

Title: Anisotropic $H_{c 2}$ , thermodynamic and transport measurements, and pressure dependence of $T_{c}$ in $K_{2} {Cr}_{3} {As}_{3}$ single crystals

Journal Article · Fri Jan 30 00:00:00 EST 2015 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PhysRevB.91.020507· OSTI ID:1225544

Kong, Tai ^[1]; Bud'ko, Sergey L. ^[1]; Canfield, Paul C. ^[1]

Iowa State Univ., Ames, IA (United States)

We present a detailed study of single crystalline K₂Cr₃As₃ and analyze its thermodynamic and transport properties, anisotropic H_c2(T), and initial pressure dependence of T_c. In zero field, the temperature-dependent resistivity is metallic. Deviation from a linear temperature dependence is evident below 100 K and a T³ dependence is roughly followed from just above T_c (~10K) to ~40K. Anisotropic H_c2(T) data were measured up to 140 kOe with field applied along and perpendicular to the rodlike crystals. For the applied field perpendicular to the rod, H_c2(T) is linear with a slope ~–70 kOe/K. For field applied along the rod, the slope is about –120 kOe/K below 70 kOe. Above 70 kOe, the magnitude of the slope decreases to ~–70 kOe/K. The electronic specific heat coefficient γ, just above T_c, is 73 mJ/mol K²; the Debye temperature Θ_D is 220 K. As a result, the specific heat jump at the superconducting transition ΔC~2.2γT_c. Finally, for hydrostatic pressures up to ~7 kbar, T_c decreases under pressure linearly at a rate of –0.034K/kbar.

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Research Organization:: Ames Laboratory (AMES), Ames, IA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02–07CH11358; AC02-07CH11358

OSTI ID:: 1225544

Alternate ID(s):: OSTI ID: 1179944

Report Number(s):: IS-J-8552; PRBMDO

Journal Information:: Physical Review. B, Condensed Matter and Materials Physics, Vol. 91, Issue 2; ISSN 1098-0121

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 65 works

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Synthesis, crystal structure and physical properties of quasi-one-dimensional ACr3As3(A = Rb, Cs) Tang, Zhang-Tu; Bao, Jin-Ke; Liu, Yi Science China Materials, Vol. 58, Issue 7 https://doi.org/10.1007/s40843-015-0063-0	journal	July 2015
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Optimizing the tight-binding parametrization of the quasi-one-dimensional superconductor K ₂ Cr ₃ As ₃ Cuono, Giuseppe; Autieri, Carmine; Forte, Filomena AIP Advances, Vol. 8, Issue 10 https://doi.org/10.1063/1.5042740	journal	October 2018
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Upper critical field and its anisotropy in ${RbCr}_{3} {As}_{3}$ Liang, Qimei; Liu, Tong; Xi, Chuanying Physical Review B, Vol. 100, Issue 21 https://doi.org/10.1103/physrevb.100.214512	journal	December 2019
Anisotropy reversal of the upper critical field at low temperatures and spin-locked superconductivity in $K_{2} {Cr}_{3} {As}_{3}$ Balakirev, F. F.; Kong, T.; Jaime, M. Physical Review B, Vol. 91, Issue 22 https://doi.org/10.1103/physrevb.91.220505	journal	June 2015
Magnetic ground state of ${KCr}_{3} {As}_{3}$ Feng, Yu; Zhang, Xiaowen; Hao, Yiqing Physical Review B, Vol. 99, Issue 17 https://doi.org/10.1103/physrevb.99.174401	journal	May 2019
Electronic structure of quasi-one-dimensional superconductor K$_2$Cr$_3$As$_3$ from first-principles calculations Jiang, Hao; Cao, Guanghan; Cao, Chao arXiv https://doi.org/10.48550/arxiv.1412.1309	text	January 2014
Synthesis, crystal structure and physical properties of quasi-one-dimensional ACr$_3$As$_3$ (A = Rb, Cs) Tang, Zhang-Tu; Bao, Jin-Ke; Yi, Liu arXiv https://doi.org/10.48550/arxiv.1508.01387	text	January 2015
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