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Title: Field-induced spin density wave and spiral phases in a layered antiferromagnet

Journal Article · · Physical Review. B, Condensed Matter and Materials Physics
 [1];  [1];  [1];  [2];  [2];  [3];  [3]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Quantum Condensed Matter Division
  2. Alternative Energies and Atomic Energy Commission (CEA), Grenoble (France). Inst. on Nanoscience and Cryogenics (INAC) and Statistical Physics, Magnetism and Superconductivity (SPSMS)
  3. Stanford Univ., CA (United States). Dept. of Applied Physics and Geballe Lab. for Advanced Materials

In this study, we determine the low-field ordered magnetic phases of the S=1 dimerized antiferromagnet Ba3Mn2O8 using single-crystal neutron diffraction. We find that for magnetic fields between μ0H=8.80T and 10.56T applied along the [110] direction the system exhibits spin density wave order with incommensurate wave vectors of type (η,η,ε). For μ0H>10.56T, the magnetic order changes to a spiral phase with incommensurate wave vectors only along the [hh0] direction. For both field-induced ordered phases, the magnetic moments are lying in the plane perpendicular to the field direction. The nature of these two transitions is fundamentally different: the low-field transition is a second-order transition to a spin density wave ground state, while the one at higher field, toward the spiral phase, is of first order.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). High Flux Isotope Reactor (HFIR); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
Grant/Contract Number:
AC05-00OR22725; DMR-1205165; DMR-0454672
OSTI ID:
1210151
Alternate ID(s):
OSTI ID: 1203817; OSTI ID: 1327631
Journal Information:
Physical Review. B, Condensed Matter and Materials Physics, Vol. 92, Issue 2; ISSN 1098-0121
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

References (21)

Bose–Einstein condensation in magnetic insulators journal March 2008
Dimensional reduction at a quantum critical point journal June 2006
Bose–Einstein condensation of the triplet states in the magnetic insulator TlCuCl3 journal May 2003
Field-induced magnetic ordering and single-ion anisotropy in the quasi-one-dimensional Haldane chain compound SrNi 2 V 2 O 8 : A single-crystal investigation journal June 2013
Magnons and continua in a magnetized and dimerized spin- 1 2 chain journal September 2014
Frustration-induced two-dimensional quantum disordered phase in piperazinium hexachlorodicuprate journal September 2001
High-field magnetization process in the S = 1 quantum spin system Ba 3 Mn 2 O 8 journal August 2002
Dispersive magnetic excitations in the S = 1 antiferromagnet Ba 3 Mn 2 O 8 journal April 2008
Singlet-Triplet Dispersion Reveals Additional Frustration in the Triangular-Lattice Dimer Compound Ba 3 Mn 2 O 8 journal June 2008
Ordered magnetic phases of the frustrated spin-dimer compound Ba 3 Mn 2 O 8 journal June 2008
Asymmetric Quintuplet Condensation in the Frustrated S = 1 Spin Dimer Compound Ba 3 Mn 2 O 8 journal July 2009
Anisotropic phase diagram of the frustrated spin dimer compound Ba 3 Mn 2 O 8 journal March 2010
Nonuniversal magnetization at the BEC critical field: Application to the spin dimer compound Ba 3 Mn 2 O 8 journal August 2011
Recent advances in magnetic structure determination by neutron powder diffraction journal October 1993
Ba 3 Mn 2 O 8 determined from neutron powder diffraction journal February 1999
Critical exponents and equation of state of the three-dimensional Heisenberg universality class journal April 2002
Critical behavior of the three-dimensional XY universality class journal May 2001
Improved high-temperature expansion and critical equation of state of three-dimensional Ising-like systems journal October 1999
Magnon supersolid and anomalous hysteresis in spin dimers on a triangular lattice journal July 2013
Probable observation of a supersolid helium phase journal January 2004
Field-Induced Supersolid Phase in Spin-One Heisenberg Models journal May 2007

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