Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Probing the effect of magnetic field on charge order in the quasi-two-dimensional Mott insulator κ-(ET) 2 Hg(SCN) 2 Cl

Journal Article · · Physical Review. B
 [1];  [2];  [3];  [4];  [5];  [5];  [5];  [6]
  1. Johns Hopkins University, Baltimore, MD (United States); Iowa State University, Ames, IA (United States); OSTI
  2. Florida A & M University, Tallahassee, FL (United States)
  3. National High Magnetic Field Laboratory, Tallahassee, FL (United States); Florida State University, Tallahassee, FL (United States)
  4. National High Magnetic Field Laboratory, Tallahassee, FL (United States)
  5. Institute of Problems of Chemical Physics, Chernogolovka (Russia)
  6. Johns Hopkins University, Baltimore, MD (United States)
+ Show Author Affiliations
Molecular-based quasi-two-dimensional charge-ordered Mott insulators can possess both spin S = 1/2 and an electric dipole degree of freedom residing on each (BEDT - TTF)2 lattice site. There exists a theoretical proposal for a magnetoelectric effect in such a material, which can manifest itself as a sensitivity of charge distribution on (BEDT - TTF)2 dimers to the magnetic field. Here in this work, we used Raman scattering spectroscopy in the magnetic field up to 31 T applied perpendicular to the two-dimensional triangular lattice planes to probe a magnetoelectric effect in $$\kappa$$ - (ET)2Hg(SCN)2Cl. This is a model compound, which shows charge order and antiferromagnetic correlations at temperatures below 30 K. We discuss possible reasons for the absence of an observable magnetoelectric effect in the probed temperature and magnetic field ranges.
Research Organization:
Johns Hopkins University, Baltimore, MD (United States)
Sponsoring Organization:
Gordon and Betty Moore Foundation; Institute for Complex Adaptive Matter (ICAM); National Science Foundation (NSF); State of Florida; USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0019331
OSTI ID:
1979693
Alternate ID(s):
OSTI ID: 1835364
Journal Information:
Physical Review. B, Journal Name: Physical Review. B Journal Issue: 24 Vol. 104; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English

References (23)

Crystal structure and physical properties of α-(BEDT-TTF)2MM' (SCN)4 [M=Rb,Cs,M'=Co,Zn] journal February 1997
Charge-Ordering in Manganates journal October 1998
Examination of the Charge-Sensitive Vibrational Modes in Bis(ethylenedithio)tetrathiafulvalene journal August 2005
Multiferroicity in an organic charge-transfer salt that is suggestive of electric-dipole-driven magnetism journal August 2012
Melting of charge order in the low-temperature state of an electronic ferroelectric-like system journal March 2020
Ferromagnetism out of charge fluctuation of strongly correlated electrons in κ-(BEDT-TTF)2Hg(SCN)2Br journal October 2021
Magnetoelectric effect in organic molecular solids journal February 2016
Molecular quantum materials: electronic phases and charge dynamics in two-dimensional organic solids journal January 2020
Interplay of dipoles and spins in κ − ( BEDT − TTF ) 2 X , where X = Hg ( SCN ) 2 Cl ,   Hg ( SCN ) 2 Br ,   Cu [ N ( CN ) 2 ] Cl ,   Cu [ N ( CN ) 2 ] Br , and Ag 2 ( CN ) 3 journal March 2020
Impurity moments conceal low-energy relaxation of quantum spin liquids journal April 2020
Anomalous dielectric response in the dimer Mott insulator κ − ( BEDT-TTF ) 2 Cu 2 ( CN ) 3 journal September 2010
Quantum electric dipoles in spin-liquid dimer Mott insulator κ -ET 2 Cu 2 ( CN ) 3 journal December 2010
Paired electron crystal: Order from frustration in the quarter-filled band journal June 2011
Magnetodielectric effects and spin-charge coupling in the spin-liquid candidate κ -(BEDT-TTF) 2 Cu 2 (CN) 3 journal April 2012
Metallic state and charge-order metal-insulator transition in the quasi-two-dimensional conductor κ -(BEDT-TTF) 2 Hg(SCN) 2 Cl journal February 2014
Weak ferromagnetism and glassy state in κ − ( BEDT − TTF ) 2 Hg ( SCN ) 2 Br journal December 2018
Evidence for Electronically Driven Ferroelectricity in a Strongly Correlated Dimerized BEDT-TTF Molecular Conductor journal June 2018
Evidence for a quantum dipole liquid state in an organic quasi–two-dimensional material journal June 2018
The C=C Stretching Vibrations of κ-(BEDT–TTF) 2 Cu[N(CN) 2 ]Br and Its Isotope Analogues journal December 2001
Charge Ordering in Organic Conductors journal May 2006
Electronic Ferroelectricity in a Dimer Mott Insulator journal June 2010
Infrared and Raman Studies of Charge Ordering in Organic Conductors, BEDT-TTF Salts with Quarter-Filled Bands journal September 2012
Raman Spectroscopy Study of Charge Fluctuation in the Spin-Liquid Candidate κ-(BEDT-TTF) 2 Cu 2 (CN) 3 journal August 2015

Similar Records

Ferromagnetism out of charge fluctuation of strongly correlated electrons in κ-(BEDT-TTF)2Hg(SCN)2Br
Journal Article · Thu Oct 07 20:00:00 EDT 2021 · npj Quantum Materials · OSTI ID:1978609
BEDT-TTF-based synmetal: Synthesis, structure, ESR, and electrical properties of (BEDT-TFF)Hg sub 0. 776 (SCN) sub 2
Journal Article · · Chemistry of Materials; (United States) · OSTI ID:7038939
Frustrated spin-1/2 dimer compound K2Co2(SeO3)3 with easy-axis anisotropy
Journal Article · Wed Dec 23 19:00:00 EST 2020 · Physical Review. B · OSTI ID:1853089

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
Mott insulators
Raman spectroscopy
magnetoelectric effect
organic compounds