DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Effective One-Dimensional Coupling in the Highly Frustrated Square-Lattice Itinerant Magnet CaCo 2 - y As 2

Journal Article · · Physical Review Letters
 [1];  [1];  [2];  [1]; ORCiD logo [3]; ORCiD logo [3]; ORCiD logo [4];  [1];  [1];  [1];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States). Dept. of Physics and Astronomy
  2. Ames Lab. and Iowa State Univ., Ames, IA (United States); Helmholtz-Zentrum Berlin (HZB), (Germany). German Research Centre for Materials and Energy
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Instrument and Source Division

Inelastic neutron scattering measurements on the itinerant antiferromagnet CaCo2–yAs2 at a temperature of 8 K reveal two orthogonal planes of scattering perpendicular to the Co square lattice in reciprocal space, demonstrating the presence of effective one-dimensional spin interactions. Here, these results are shown to arise from near-perfect bond frustration within the J1–J2 Heisenberg model on a square lattice with ferromagnetic J1 and hence indicate that the extensive previous experimental and theoretical study of the J1–J2 Heisenberg model on local-moment square spin lattices should be expanded to include itinerant spin systems.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division
Grant/Contract Number:
AC02-07CH11358; AC05-00OR22725
OSTI ID:
1406559
Report Number(s):
IS-J--9471
Journal Information:
Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 14 Vol. 119; ISSN 0031-9007; ISSN PRLTAO
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (29)

Is the nature of magnetic order in copper-oxides and in iron-pnictides different? journal January 2010
Spin liquids in frustrated magnets journal March 2010
Spin waves and magnetic exchange interactions in CaFe2As2 journal July 2009
Normal-state spin dynamics and temperature-dependent spin-resonance energy in optimally doped BaFe1.85Co0.15As2 journal December 2009
Geometrically frustrated magnetic materials journal January 2001
Design and operation of the wide angular-range chopper spectrometer ARCS at the Spallation Neutron Source journal January 2012
The puzzle of high temperature superconductivity in layered iron pnictides and chalcogenides journal October 2010
Quantum spin liquids: a review journal November 2016
Theory of electron nematic order in LaFeAsO journal June 2008
Ising and spin orders in the iron-based superconductors journal July 2008
Magnetic properties of BaCdVO ( PO 4 ) 2 : A strongly frustrated spin- 1 2 square lattice close to the quantum critical regime journal August 2008
Anisotropic magnetic and superconducting properties of CaFe 2 − x Co x As 2 ( x = 0 , 0.06 ) single crystals journal January 2009
Single-crystal P 31 NMR studies of the frustrated square-lattice compound Pb 2 ( VO ) ( PO 4 ) 2 journal December 2009
Theory of itinerant magnetic excitations in the spin-density-wave phase of iron-based superconductors journal April 2010
Paramagnetic spin correlations in CaFe 2 As 2 single crystals journal June 2010
Nematic spin fluid in the tetragonal phase of BaFe 2 As 2 journal August 2011
Magnetic exchange interactions in BaMn 2 As 2 : A case study of the J 1 - J 2 - J c Heisenberg model journal September 2011
Magnetic excitations in underdoped Ba(Fe 1 − x Co x ) 2 As 2 with x = 0.047 journal July 2012
Crystal and magnetic structure of CaCo 1.86 As 2 studied by x-ray and neutron diffraction journal November 2013
Crossover from spin waves to diffusive spin excitations in underdoped Ba ( Fe 1 − x Co x ) 2 As 2 journal May 2014
Physical properties of metallic antiferromagnetic CaCo 1.86 As 2 single crystals journal June 2014
Superconductivity at 22 K in Co-Doped BaFe 2 As 2 Crystals journal September 2008
Superconducting State in SrFe 2 − x Co x As 2 by Internal Doping of the Iron Arsenide Layers journal November 2008
Anisotropic Three-Dimensional Magnetism in CaFe 2 As 2 journal November 2008
Itinerant Magnetic Excitations in Antiferromagnetic CaFe 2 As 2 journal May 2009
Stripe Antiferromagnetic Spin Fluctuations in SrCo 2 As 2 journal October 2013
Ising transition in frustrated Heisenberg models journal January 1990
Nematic Order in Square Lattice Frustrated Ferromagnets journal January 2006
Finite temperature properties and frustrated ferromagnetism in a square lattice Heisenberg model journal April 2004

Cited By (9)

Coexistence of metallic and nonmetallic properties in the pyrochlore Lu2Rh2O7 journal March 2019
Alkali counterions tune diruthenium( iii , iii )-based ferrimagnetic chain structured antiferromagnets exhibiting step-like hysteresis loops journal January 2019
Antiferromagnetic stacking of ferromagnetic layers and doping-controlled phase competition in Ca 1 − x Sr x Co 2 − y As 2 journal July 2019
Flat-band magnetism and helical magnetic order in Ni-doped SrCo 2 As 2 journal September 2019
Non-Fermi-liquid types of behavior associated with a magnetic quantum critical point in Sr ( Co 1 − x Ni x ) 2 As 2 single crystals journal September 2019
Helical magnetic ordering in Sr ( Co 1 − x Ni x ) 2 As 2 journal October 2019
Signatures of coupling between spin waves and Dirac fermions in YbMnBi 2 journal January 2020
Coexistence of Ferromagnetic and Stripe Antiferromagnetic Spin Fluctuations in SrCo 2 As 2 journal March 2019
Coexistence of metallic and nonmetallic properties in the pyrochlore Lu$_2$Rh$_2$O$_7$ text January 2019