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Title: Raman Scattering as a Probe of the Magnetic State of BEDT-TTF Based Mott Insulators

Journal Article · · Crystals
 [1];  [1];  [2];  [2];  [2];  [3];  [1]
  1. Johns Hopkins Univ., Baltimore, MD (United States). Inst. for Quantum Matter and the Dept. of Physics and Astronomy
  2. Inst. of Problems of Chemical Physics, Chernogolovka (Russia)
  3. National Science Foundation (NSF), Arlington, VA (United States). Division of Materials Research; Argonne National Lab. (ANL), Argonne, IL (United States). Materials Science Division

Quasi-two-dimensional Mott insulators based on BEDT-TTF molecules have recently demonstrated a variety of exotic states, which originate from electron-electron correlations and geometrical frustration of the lattice. Among those states are a triangular S = 1/2 spin liquid and quantum dipole liquid. Here in this article, we show the power of Raman scattering technique to characterize magnetic and electronic excitations of these states. Our results demonstrate a distinction between a spectrum of magnetic excitations in a simple Mott insulator with antiferromagnetic interactions, and a spectrum of an insulator with an additional on-site charge degree of freedom.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National High Magnetic Field Laboratory (NHMFL)
Grant/Contract Number:
AC02-06CH11357
OSTI ID:
1484855
Journal Information:
Crystals, Vol. 8, Issue 6; ISSN 2073-4352
Publisher:
MDPICopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Figures / Tables (3)