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Anisotropy reversal of the upper critical field at low temperatures and spin-locked superconductivity in K2Cr3As3

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [2];  [1];  [1];  [1];  [3];  [2];  [2]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Iowa State Univ., Ames, IA (United States)
  3. Old Dominion Univ., Norfolk, VA (United States)
We report measurements of the anisotropic upper critical field Hc2(T) for K2Cr3As3 single crystals up to 60 T and T>0.6K. Our results show that the upper critical field parallel to the Cr chains, Hc2(T), exhibits a paramagnetically limited behavior, whereas the shape of the Hc2(T) curve (perpendicular to the Cr chains) has no evidence of paramagnetic effects. As a result, the curves Hc2(T) and Hc2(T) cross at T≈4K, so that the anisotropy parameter γH(T)=Hc2/Hc2(T)increases from γH(Tc)≈0.35 near Tc to γH(0)≈1.7 at 0.6 K. This behavior of Hc2(T) is inconsistent with triplet superconductivity but suggests a form of singlet superconductivity with the electron spins locked onto the direction of Cr chains.
Research Organization:
Ames Laboratory (AMES), Ames, IA (United States); Los Alamos National Laboratory (LANL)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Grant/Contract Number:
AC02-07CH11358; AC52-06NA25396
OSTI ID:
1227371
Alternate ID(s):
OSTI ID: 1198509
OSTI ID: 1258007
Report Number(s):
IS-J--8708; LA-UR-15-24703
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Journal Name: Physical Review. B, Condensed Matter and Materials Physics Journal Issue: 22 Vol. 91; ISSN 1098-0121; ISSN PRBMDO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (43)

Superconductivity in quasi-one-dimensional Cs2Cr3As3 with large interchain distance journal January 2015
Anisotropy and metamagnetism in the RNi2Ge2 (R=Y, La–Nd, Sm–Lu) series journal October 1999
Thermodynamic and transport properties of single crystalline RCo2Ge2 (R=Y, La–Nd, Sm–Tm) journal May 2014
Limits of the upper critical field in dirty two-gap superconductors journal June 2007
Direct measurement of the upper critical field in cuprate superconductors journal February 2014
Superconductivity with extremely large upper critical fields in Nb2Pd0.81S5 journal March 2013
Proximity detector circuits: An alternative to tunnel diode oscillators for contactless measurements in pulsed magnetic field environments journal June 2009
Growth of single crystals from metallic fluxes journal June 1992
Magnetic field dependent and induced ground states in organic conductors journal November 2008
Iron-based superconductors at high magnetic fields journal September 2011
Magnetism in Quasi-One-Dimensional A 2 Cr 3 As 3 (A=K,Rb) Superconductors journal May 2015
Inversion of the upper critical field anisotropy in FeTeS films journal March 2014
Superconducting properties and Fermi-surface topology of the quasi-two-dimensional organic superconductor λ-(BETS) 2 GaCl 4 (BETS≡bis(ethylene-dithio)tetraselenafulvalene) journal August 2001
Enhanced upper critical fields in a new quasi-one-dimensional superconductor Nb 2 Pd x Se 5 journal December 2013
Iron chalcogenide superconductors at high magnetic fields journal October 2012
Temperature and Purity Dependence of the Superconducting Critical Field, H c 2 . II journal July 1966
Temperature and Purity Dependence of the Superconducting Critical Field, H c 2 . III. Electron Spin and Spin-Orbit Effects journal July 1966
Effects of Co substitution on thermodynamic and transport properties and anisotropic H c 2 in Ba ( Fe 1 − x Co x ) 2 As 2 single crystals journal December 2008
Determination of anisotropic H c 2 up to 60 T in Ba 0.55 K 0.45 Fe 2 As 2 single crystals journal December 2008
Weak anisotropy of the superconducting upper critical field in Fe 1.11 Te 0.6 Se 0.4 single crystals journal January 2010
Upper critical field and the Fulde-Ferrel-Larkin-Ovchinnikov transition in multiband superconductors journal November 2010
Anisotropic H c 2 of K 0.8 Fe 1.76 Se 2 determined up to 60 T journal March 2011
Significant enhancement of upper critical fields by doping and strain in iron-based superconductors journal November 2011
Effect of equatorial line nodes on the upper critical field and London penetration depth journal September 2014
Unconventional superconductivity in quasi-one-dimensional Rb 2 Cr 3 As 3 journal January 2015
Anisotropic H c 2 , thermodynamic and transport measurements, and pressure dependence of T c in K 2 Cr 3 As 3 single crystals journal January 2015
Evidence for nodal superconductivity in quasi-one-dimensional K 2 Cr 3 As 3 journal June 2015
Anomalous In-Plane Anisotropy of the Onset of Superconductivity in ( TMTSF ) 2 ClO 4 journal March 2008
Hidden Reentrant and Larkin-Ovchinnikov-Fulde-Ferrell Superconducting Phases in a Magnetic Field in a ( TMTSF ) 2 ClO 4 journal August 2011
Upper Critical Magnetic Field far above the Paramagnetic Pair-Breaking Limit of Superconducting One-Dimensional Li 0.9 Mo 6 O 17 Single Crystals journal May 2012
NMR Investigation of the Quasi-One-Dimensional Superconductor K 2 Cr 3 As 3 journal April 2015
Anisotropy of the Upper Critical Field in (TMTSF ) 2 P F 6 journal May 1997
Superconductivity in Quasi-One-Dimensional K 2 Cr 3 As 3 with Significant Electron Correlations journal February 2015
Properties of boson-exchange superconductors journal October 1990
Fulde–Ferrell–Larkin–Ovchinnikov State in Heavy Fermion Superconductors journal May 2007
Anomalous In-Plane Anisotropy of the Onset of Superconductivity in (TMTSF)2ClO4 text January 2008
Significant enhancement of upper critical fields by doping and strain in Fe-based superconductors text January 2011
Superconductivity with extremely large upper critical fields in Nb2Pd0.81S5 text January 2013
Direct measurement of the upper critical field in a cuprate superconductor text January 2013
Thermodynamic and transport properties of single crystalline RCo$_{2}$Ge$_{2}$ (R = Y, La-Nd, Sm-Tm) text January 2013
Effect of equatorial line nodes on upper critical field and London penetration depth text January 2014
Magnetism in Quasi-One-Dimensional A$_2$Cr$_3$As$_3$ (A=K,Rb) superconductors text January 2015
Limits of the upper critical field in dirty two-gap superconductors text January 2007

Cited By (19)

Exploring Topological Superconductivity in Topological Materials journal July 2019
Electronic Structures of Newly Discovered Quasi-One-Dimensional Superconductors A2Mo3As3 (A=K,Rb,Cs) journal February 2019
A brief review on μSR studies of unconventional Fe- and Cr-based superconductors journal October 2018
Synthesis, crystal structure and physical properties of quasi-one-dimensional ACr3As3(A = Rb, Cs) journal July 2015
Na-doping effects on structural evolution and superconductivity in (K 1− x Na x ) 2 Cr 3 As 3 ( x   =  0–1) journal March 2019
Superconductivity with peculiar upper critical fields in quasi-one-dimensional Cr-based pnictides journal October 2018
Anisotropic upper critical field of pristine and proton-irradiated single crystals of the magnetically ordered superconductor RbEuFe 4 As 4 journal August 2019
Multiband superconductivity and possible nodal gap in RbCr 3 As 3 revealed by Andreev reflection and single-particle tunneling measurements journal September 2019
Upper critical field and its anisotropy in RbCr 3 As 3 journal December 2019
Tunable electronic anisotropy in single-crystal A 2 Cr 3 As 3 ( A = K ,   Rb ) quasi-one-dimensional superconductors journal July 2015
Superconducting ground state of quasi-one-dimensional K 2 Cr 3 As 3 investigated using μ SR measurements journal October 2015
Cs 133 and As 75 NMR investigation of the normal metallic state of quasi-one-dimensional Cs 2 Cr 3 As 3 journal May 2016
Temperature and angular dependence of the upper critical field in K 2 Cr 3 As 3 journal January 2017
Superconductivity at 5 K in quasi-one-dimensional Cr-based KCr 3 As 3 single crystals journal October 2017
Ferromagnetic Spin Fluctuation and Unconventional Superconductivity in Rb 2 Cr 3 As 3 Revealed by As 75 NMR and NQR journal September 2015
Tuning the Distance to a Possible Ferromagnetic Quantum Critical Point in A 2 Cr 3 As 3 journal July 2019
Synthesis, crystal structure and physical properties of quasi-one-dimensional ACr$_3$As$_3$ (A = Rb, Cs) text January 2015
A brief review on muSR studies of unconventional Fe and Cr-based superconductors text January 2018
Exploring Topological Superconductivity in Topological Materials text January 2019

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