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Title: Emergent Ising degrees of freedom above a double-stripe magnetic ground state [Emergent Ising degrees of freedom above double-stripe magnetism]

Journal Article · · Physical Review B
 [1];  [1]
  1. Ames Lab. and Iowa State Univ., Ames, IA (United States)
+ Show Author Affiliations

Here, double-stripe magnetism [Q=(π/2,π/2)] has been proposed as the magnetic ground state for both the iron-telluride and BaTi2Sb2O families of superconductors. Double-stripe order is captured within a J1–J2–J3 Heisenberg model in the regime J3 >> J2 >> J1. Intriguingly, besides breaking spin-rotational symmetry, the ground-state manifold has three additional Ising degrees of freedom associated with bond ordering. Via their coupling to the lattice, they give rise to an orthorhombic distortion and to two nonuniform lattice distortions with wave vector (π,π). Because the ground state is fourfold degenerate, modulo rotations in spin space, only two of these Ising bond order parameters are independent. Here, we introduce an effective field theory to treat all Ising order parameters, as well as magnetic order, and solve it within a large-N limit. All three transitions, corresponding to the condensations of two Ising bond order parameters and one magnetic order parameter are simultaneous and first order in three dimensions, but lower dimensionality, or equivalently weaker interlayer coupling, and weaker magnetoelastic coupling can split the three transitions, and in some cases allows for two separate Ising phase transitions above the magnetic one.

Research Organization:
Ames Lab., Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358; PHYS-1066293
OSTI ID:
1417354
Alternate ID(s):
OSTI ID: 1414976
Report Number(s):
IS-J-9554; PRBMDO; TRN: US1801040
Journal Information:
Physical Review B, Vol. 96, Issue 21; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (41)

Bicollinear Antiferromagnetic Order, Monoclinic Distortion, and Reversed Resistivity Anisotropy in FeTe as a Result of Spin-Lattice Coupling journal September 2016
Structural Quantum Criticality and Superconductivity in Iron-Based Superconductor Ba(Fe 1- x Co x ) 2 As 2 journal February 2012
Ising and spin orders in the iron-based superconductors journal July 2008
Ba 1– x Na x Ti 2 Sb 2 O (0.0 ≤ x ≤ 0.33): A Layered Titanium-Based Pnictide Oxide Superconductor journal September 2012
Electronic structure, disconnected Fermi surfaces and antiferromagnetism in the layered pnictide superconductor Na x Ba 1− x Ti 2 Sb 2 O journal December 2012
Nematic State of Pnictides Stabilized by Interplay between Spin, Orbital, and Lattice Degrees of Freedom journal July 2013
Strong Correlations and Magnetic Frustration in the High T c Iron Pnictides journal August 2008
Enhancement of Superconductivity near a Nematic Quantum Critical Point journal March 2015
Microscopically derived Ginzburg-Landau theory for magnetic order in the iron pnictides journal December 2011
Excitonic and nematic instabilities on the surface of topological Kondo insulators journal December 2015
Effect of magnetic frustration on nematicity and superconductivity in iron chalcogenides journal August 2015
Spin nematic fluctuations near a spin-density-wave phase journal July 2015
Quantum criticality in the iron pnictides and chalcogenides journal May 2011
Quenched disorder and vestigial nematicity in the pseudogap regime of the cuprates journal May 2014
Superconductivity in BaTi 2 Sb 2 O with a d 1 Square Lattice journal October 2012
Intra-unit-cell nematic charge order in the titanium-oxypnictide family of superconductors journal December 2014
Arsenic-bridged antiferromagnetic superexchange interactions in LaFeAsO journal December 2008
Ising transition in frustrated Heisenberg models journal January 1990
Dimensional crossover in the quasi-two-dimensional Ising-O(3) model journal December 2011
Electronic liquid-crystal phases of a doped Mott insulator journal June 1998
Nematic phase without Heisenberg physics in FeAs planes journal December 2011
What drives nematic order in iron-based superconductors? journal January 2014
Magnetism in Parent Iron Chalcogenides: Quantum Fluctuations Select Plaquette Order journal October 2012
Theory of the evolution of magnetic order in Fe 1 + y Te compounds with increasing interstitial iron journal October 2014
Ferro-Orbital Ordering Transition in Iron Telluride Fe 1 + y Te journal May 2014
Origin of the 150-K Anomaly in LaFeAsO: Competing Antiferromagnetic Interactions, Frustration, and a Structural Phase Transition journal August 2008
Theory of electron nematic order in LaFeAsO journal June 2008
Charge-density-wave order with momentum ( 2 Q , 0 ) and ( 0 , 2 Q ) within the spin-fermion model: Continuous and discrete symmetry breaking, preemptive composite order, and relation to pseudogap in hole-doped cuprates journal July 2014
First-order magnetic and structural phase transitions in Fe 1 + y Se x Te 1 − x journal February 2009
Effects of Nematic Fluctuations on the Elastic Properties of Iron Arsenide Superconductors journal October 2010
Ordering due to disorder in a frustrated vector antiferromagnet journal April 1989
Ubiquitous signatures of nematic quantum criticality in optimally doped Fe-based superconductors journal May 2016
Tunable ( δ π , δ π )-Type Antiferromagnetic Order in α -Fe(Te,Se) Superconductors journal June 2009
Preemptive nematic order, pseudogap, and orbital order in the iron pnictides journal January 2012
Global phase diagram for magnetism and lattice distortion of iron-pnictide materials journal September 2009
Structure antiferroma gnetique de Fe1. 125Te accompagnee d'une deformation monoclinique journal March 1975
Double-stage nematic bond ordering above double stripe magnetism: Application to BaTi 2 Sb 2 O journal May 2017
A magnetic analogue of stereoisomerism : application to helimagnetism in two dimensions journal January 1977
Order as an effect of disorder journal January 1980
A key role for unusual spin dynamics in ferropnictides journal December 2008
Magnetoelastic effects in iron telluride journal March 2011

Figures / Tables (17)

FIG. 1(p. 1)figure FIG. 1
FIG. 2(p. 2)figure FIG. 2
FIG. 3(p. 9)figure FIG. 3
FIG. 4(p. 10)figure FIG. 4
FIG. 5(p. 11)figure FIG. 5
FIG. 6(p. 11)figure FIG. 6
FIG. 7(p. 11)figure FIG. 7
FIG. 8(p. 12)figure FIG. 8
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FIG. 10(p. 14)figure FIG. 10
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FIG. 12(p. 15)figure FIG. 12
FIG. 13(p. 16)figure FIG. 13
FIG. 14(p. 16)figure FIG. 14
FIG. 15(p. 16)figure FIG. 15
FIG. 17(p. 17)figure FIG. 17
FIG. 16(p. 18)figure FIG. 16

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