skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

This content will become publicly available on July 26, 2020

Title: Microscopic Nature of Magnetic Ground State in CeAuSb 2

Abstract

Here, the synergistic investigation of ground-state magnetic correlation in the single-crystal heavy fermion compound CeAuSb 2 using detailed neutron scattering measurements and density functional calculations is reported. Unlike the previous reports of single antiferromagnetic transition at T N≈ 6 K, three successive transitions with distinct critical exponents at T N = 5.3, 4.46, and 3.76 K, respectively, are detected in CeAuSb. The low-temperature ground-state magnetic correlation is described by the spin density wave order in the basal plane with propagation wave vector $τ$ = (0.135, 0.135, 0.5) rlu. The spin density wave order arises due to the nesting of hole pockets in the Fermi surface, with parallel surfaces being separated by the experimentally found propagation vector τ. The comprehensive investigation of magnetic ground-state properties is expected to provide new insights in understanding the emerging quantum magnetism in this system, including the debated quantum critical state and magnetic field-induced metamagnetic transitions at low temperature.

Authors:
 [1];  [1];  [2];  [3];  [3]; ORCiD logo [1]
  1. Univ. of Missouri, Columbia, MO (United States)
  2. National Inst. of Standards and Technology (NIST), Gaithersburg, MD (United States); Univ. of Maryland, College Park, MD (United States)
  3. Tata Inst. of Fundamental Research, Bombay (India)
Publication Date:
Research Org.:
Univ. of Missouri, Columbia, MO (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1594094
Alternate Identifier(s):
OSTI ID: 1557011
Grant/Contract Number:  
[SC0014461]
Resource Type:
Accepted Manuscript
Journal Name:
Physica Status Solidi rrl
Additional Journal Information:
[ Journal Volume: 13; Journal Issue: 10]; Journal ID: ISSN 1862-6254
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; density functional calculations; heavy electron compounds; magnetic order; magnetic phase transitions; quantum magnetic phenomena

Citation Formats

Yumnam, George, Chen, Yiyao, Zhao, Yang, Thamizhavel, Arumugam, Dhar, Sudesh K., and Singh, Deepak K. Microscopic Nature of Magnetic Ground State in CeAuSb2. United States: N. p., 2019. Web. doi:10.1002/pssr.201900304.
Yumnam, George, Chen, Yiyao, Zhao, Yang, Thamizhavel, Arumugam, Dhar, Sudesh K., & Singh, Deepak K. Microscopic Nature of Magnetic Ground State in CeAuSb2. United States. doi:10.1002/pssr.201900304.
Yumnam, George, Chen, Yiyao, Zhao, Yang, Thamizhavel, Arumugam, Dhar, Sudesh K., and Singh, Deepak K. Fri . "Microscopic Nature of Magnetic Ground State in CeAuSb2". United States. doi:10.1002/pssr.201900304.
@article{osti_1594094,
title = {Microscopic Nature of Magnetic Ground State in CeAuSb2},
author = {Yumnam, George and Chen, Yiyao and Zhao, Yang and Thamizhavel, Arumugam and Dhar, Sudesh K. and Singh, Deepak K.},
abstractNote = {Here, the synergistic investigation of ground-state magnetic correlation in the single-crystal heavy fermion compound CeAuSb2 using detailed neutron scattering measurements and density functional calculations is reported. Unlike the previous reports of single antiferromagnetic transition at TN≈ 6 K, three successive transitions with distinct critical exponents atTN = 5.3, 4.46, and 3.76 K, respectively, are detected in CeAuSb. The low-temperature ground-state magnetic correlation is described by the spin density wave order in the basal plane with propagation wave vector $τ$ = (0.135, 0.135, 0.5) rlu. The spin density wave order arises due to the nesting of hole pockets in the Fermi surface, with parallel surfaces being separated by the experimentally found propagation vector τ. The comprehensive investigation of magnetic ground-state properties is expected to provide new insights in understanding the emerging quantum magnetism in this system, including the debated quantum critical state and magnetic field-induced metamagnetic transitions at low temperature.},
doi = {10.1002/pssr.201900304},
journal = {Physica Status Solidi rrl},
number = [10],
volume = [13],
place = {United States},
year = {2019},
month = {7}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on July 26, 2020
Publisher's Version of Record

Save / Share:

Works referenced in this record:

Quantum critical phenomena
journal, August 1976


Pressure effects on the heavy-fermion antiferromagnet CeAuSb 2
journal, May 2012


Generalized Gradient Approximation Made Simple
journal, October 1996

  • Perdew, John P.; Burke, Kieron; Ernzerhof, Matthias
  • Physical Review Letters, Vol. 77, Issue 18, p. 3865-3868
  • DOI: 10.1103/PhysRevLett.77.3865

Field-induced quantum fluctuations in the heavy fermion superconductor CeCu2Ge2
journal, October 2011

  • Singh, D. K.; Thamizhavel, A.; Lynn, J. W.
  • Scientific Reports, Vol. 1, Issue 1
  • DOI: 10.1038/srep00117

Multi- q Mesoscale Magnetism in CeAuSb 2
journal, February 2018


Quantum critical fluctuations in layered YFe 2 Al 10
journal, September 2014

  • Wu, L. S.; Kim, M. S.; Park, K.
  • Proceedings of the National Academy of Sciences, Vol. 111, Issue 39
  • DOI: 10.1073/pnas.1413112111

Magnetic field-tuned quantum critical point in CeAuSb 2
journal, August 2005


Anomalous Properties around Magnetic Instability in Heavy Electron Systems
journal, March 1995

  • Moriya, Tôru; Takimoto, Tetsuya
  • Journal of the Physical Society of Japan, Vol. 64, Issue 3
  • DOI: 10.1143/JPSJ.64.960

Effect of uniaxial stress on the magnetic phases of CeAuSb 2
journal, July 2018


Special points for Brillouin-zone integrations
journal, June 1976

  • Monkhorst, Hendrik J.; Pack, James D.
  • Physical Review B, Vol. 13, Issue 12, p. 5188-5192
  • DOI: 10.1103/PhysRevB.13.5188

QUANTUM ESPRESSO: a modular and open-source software project for quantum simulations of materials
journal, September 2009

  • Giannozzi, Paolo; Baroni, Stefano; Bonini, Nicola
  • Journal of Physics: Condensed Matter, Vol. 21, Issue 39, Article No. 395502
  • DOI: 10.1088/0953-8984/21/39/395502

Fermi-liquid instabilities at magnetic quantum phase transitions
journal, August 2007

  • Löhneysen, Hilbert v.; Rosch, Achim; Vojta, Matthias
  • Reviews of Modern Physics, Vol. 79, Issue 3
  • DOI: 10.1103/RevModPhys.79.1015

Multiple magnetic structures of correlated Ce ions in intermetallic CeAu 2 Ge 2
journal, August 2012


What lies beneath the dome?
journal, March 2008


Locally critical quantum phase transitions in strongly correlated metals
journal, October 2001

  • Si, Qimiao; Rabello, Silvio; Ingersent, Kevin
  • Nature, Vol. 413, Issue 6858
  • DOI: 10.1038/35101507

Quantum criticality
journal, January 2005


Density-functional theory and strong interactions: Orbital ordering in Mott-Hubbard insulators
journal, August 1995


Atoms, molecules, solids, and surfaces: Applications of the generalized gradient approximation for exchange and correlation
journal, September 1992


Field-temperature phase diagram and entropy landscape of CeAuSb 2
journal, May 2016


Quantum criticality in heavy-fermion metals
journal, March 2008

  • Gegenwart, Philipp; Si, Qimiao; Steglich, Frank
  • Nature Physics, Vol. 4, Issue 3
  • DOI: 10.1038/nphys892

Pseudopotentials periodic table: From H to Pu
journal, December 2014


Heavy Fermions and Quantum Phase Transitions
journal, September 2010


Coupling of field-induced spin fluctuations and spin-density wave in intermetallic CeAg 2 Ge 2
journal, August 2011


Effect of a nonzero temperature on quantum critical points in itinerant fermion systems
journal, September 1993


Magnetic Fluctuations at a Field-Induced Quantum Phase Transition
journal, December 2007


Mixed-valence compounds
journal, April 1976


Anisotropic electrical and magnetic properties of Ce T Sb 2 ( T = Cu , Au, and Ni) single crystals
journal, August 2003


Advanced capabilities for materials modelling with Quantum ESPRESSO
journal, October 2017

  • Giannozzi, P.; Andreussi, O.; Brumme, T.
  • Journal of Physics: Condensed Matter, Vol. 29, Issue 46
  • DOI: 10.1088/1361-648X/aa8f79