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Browsing Научные публикации в Scopus by Author "Deisenhofer J."

Browsing Научные публикации в Scopus by Author "Deisenhofer J."

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  • Alternating spin-orbital order in tetragonal Sr 2VO 4 
    Eremin M.; Deisenhofer J.; Eremina R.; Teyssier J.; Van Der Marel D.; Loidl A. (2011)
    Considering spin-orbit coupling, the tetragonal crystal field, and all relevant superexchange processes including quantum interference, we derive expressions for the energy levels of the vanadium ions in tetragonal Sr 2VO ...
  • Anisotropic exchange in spin chains 
    Zakharov D.; Von Nidda H.; Eremin M.; Deisenhofer J.; Eremina R.; Loidl A. (2008)
    Quasi-one-dimensional (1D) spin systems are highly unconventional materials, which exhibit a wide variety of phenomena, including spin-Peierls transition and charge ordering. In this paper, we show that electron spin ...
  • Anisotropic exchange interactions in CuTe2O5 
    Eremina R.; Gavrilova T.; Krug Von Nidda N.; Pimenov A.; Deisenhofer J.; Loidl A. (2008)
    Electron paramagnetic resonance (EPR) was used to study CuTe 2O5 single crystals at frequencies of 9.4 and 160 GHz. Analytic expressions for the second and fourth moments of the EPR line are deduced with inclusion of the ...
  • Dynamical Dzyaloshinsky-Moriya interaction in KCuF3 
    Eremin M.; Zakharov D.; Von Nidda H.; Eremina R.; Shuvaev A.; Pimenov A.; Ghigna P.; Deisenhofer J.; Loidl A. (2008)
    The spin dynamics of the prototypical quasi-one-dimensional antiferromagnetic Heisenberg spin S=1/2 chain KCuF3 is investigated by electron spin resonance spectroscopy. Our analysis shows that the peculiarities of the spin ...
  • Electron spin resonance and exchange paths in the orthorhombic dimer system Sr2VO4 
    Deisenhofer J.; Schaile S.; Teyssier J.; Wang Z.; Hemmida M.; Von Nidda H.; Eremina R.; Eremin M.; Viennois R.; Giannini E.; Van Der Marel D.; Loidl A. (2012)
    We report on susceptibility and electron spin resonance (ESR) measurements at X- and Q-band frequencies of Sr2VO4 with orthorhombic symmetry. In this dimer system, the V4+ ions are in tetrahedral environment and are coupled ...
  • ESR evidence for partial melting of the orbital order in LaMnO3 below the Jahn-Teller transition 
    Schaile S.; Von Nidda H.; Deisenhofer J.; Eremin M.; Tokura Y.; Loidl A. (2014)
    We report on high-temperature electron spin resonance studies of a detwinned LaMnO3 single crystal across the Jahn-Teller transition at TJT=750 K. The anisotropy of the linewidth and g factor reflects the local Jahn-Teller ...
  • ESR study in lightly doped La1-xSrxMnO3 
    Ivanshin V.; Deisenhofer J.; Krug Von Nidda H.; Loidl A.; Mukhin A.; Balbashov A.; Eremin M. (2000)
    We present a systematic electron-spin-resonance (ESR) study in single crystals of La1-xSrxMnO3(0≤x ≤0.2). The temperature dependence of the ESR linewidth marks all significant transitions between both orthorhombic (O′,O) ...
  • Exchange-induced magnetic dipole mechanism of magnon sideband 
    Eremin M.; Deisenhofer J.; Fayzullin M.; Kant C.; Loidl A. (2011)
    We propose a new mechanism of exciton-magnon absorption in the 1D Heisenberg antiferromagnet KCuF3. It yields the correct description of the relative intensity of the spectral lines in both polarizations E⊥ c and E∥c. The ...
  • Griffiths phases vs magnetic polarons in the lightly doped La1-xSrxMno3 
    Ivanshin V.; Deisenhofer J.; Krug von Nidda H.; Loidl A. (2007)
    The nature of the ferromagnetic (FM)-paramagnetic (PM) transition in perovskite-doped manganites is the subject of considerable discussions. There is no general consensus about the microscopic physics of stable FM clusters ...
  • Magnetoelectric properties and low-energy excitations of multiferroic FeCr2 S4 
    Strinić A.; Reschke S.; Vasin K.V.; Schmidt M.; Loidl A.; Tsurkan V.; Eremin M.V.; Deisenhofer J. (2020)
    © 2020 American Physical Society. We report on the low-frequency optical excitations in the multiferroic ground state of polycrystalline FeCr2S4 in the frequency range 0.3-3 THz and their changes upon applying external ...
  • Microscopic State of Low Doped Manganites la1-xSrx MnO3 Probed by ESR 
    Ivanshin V.; Eremin M.; Deisenhofer J.; Von Krug Nidda H.; Loidl A.; Eremina R. (2002)
    The electron spin resonance (ESR) measurements were performed in single crystals of La1-xSrxMnO3 (0.05 < x < 0.125) in order to study the interplay of crystal field, Dzyaloshinsky-Moriya interaction, Jahn-Teller (JT) effect, ...
  • Observation of a griffiths phase in paramagnetic La1-xSrxMnO3 
    Deisenhofer J.; Braak D.; Krug Von Nidda H.; Hemberger J.; Eremina R.; Ivanshin V.; Balbashov A.; Jug G.; Loidl A.; Kimura T.; Tokura Y. (2005)
    We report on the discovery of a novel triangular phase regime in the system La1-xSrxMnO3 by means of electron spin resonance and magnetic susceptibility measurements. This phase is characterized by the coexistence of ...
  • Optical evidence for symmetry changes above the Néel temperature of KCuF3 
    Deisenhofer J.; Leonov I.; Eremin M.; Kant C.; Ghigna P.; Mayr F.; Iglamov V.; Anisimov V.; Van Der Marel D. (2008)
    We report on optical measurements of the 1D Heisenberg antiferromagnet KCuF3. The crystal-field excitations of the Cu2+ ions have been observed and their temperature dependence can be understood in terms of magnetic and ...
  • Optical spectroscopy in CoO: Phononic, electric, and magnetic excitation spectrum within the charge-transfer gap 
    Kant C.; Rudolf T.; Schrettle F.; Mayr F.; Deisenhofer J.; Lunkenheimer P.; Eremin M.; Loidl A. (2008)
    The reflectivity of single-crystalline CoO has been studied by optical spectroscopy for wave numbers ranging from 100 to 28 cm-1 and for temperatures 8<T<325 K. A splitting of the cubic IR-active phonon mode on passing the ...
  • Optical study of phonons and electronic excitations in tetragonal Sr 2VO4 
    Teyssier J.; Viennois R.; Giannini E.; Eremina R.; Günther A.; Deisenhofer J.; Eremin M.; Van Der Marel D. (2011)
    We report on the optical excitation spectra in Sr2VO 4. The phonon modes are assigned and their evolution with temperature is discussed in the frame of the different phase transitions crossed upon cooling. Besides the ...
  • Orbital order and spin relaxation in La0.95Sr0.05MnO3 
    Kochelaev B.; Shilova E.; Deisenhofer J.; Krug Von Nidda H.; Loidl A.; Mukhin A.; Balbashov A. (2003)
    We analyze the temperature and angular dependence of the paramagnetic-resonance linewidth of La0.95Sr0.05MnO3. The observed anisotropy can be well described by the crystal field contributions originated by the Jahn-Teller ...
  • Orbital order parameter in La0.95Sr0.05MnO 3 probed by electron spin resonance 
    Deisenhofer J.; Kochelaev B.; Shilova E.; Balbashov A.; Loidl A.; Krug Von Nidda H. (2003)
    The temperature dependence of the electron-spin resonance in La 0.95Sr0.05MnO3 has been investigated and analyzed in the paramagnetic regime across the orbital ordering transition. From the temperature dependence and the ...
  • Phase transitions and spin relaxation in La0.95Sr0.05MnO3 
    Kochelaev B.; Shilova E.; Deisenhofer J.; Krug Von Nidda H.; Loidl A.; Mukhin A.; Balbashov A. (2003)
    We present a model calculation of the paramagnetic-resonance linewidth in La0.95Sr0.05MnO3. Both the temperature and the angular dependencies can be described by contributions from the crystal field due to the cooperative ...
  • Spin correlations and Dzyaloshinskii-Moriya interaction in Cs 2CuCl4 
    Fayzullin M.; Eremina R.; Eremin M.; Dittl A.; Van Well N.; Ritter F.; Assmus W.; Deisenhofer J.; Von Nidda H.; Loidl A. (2013)
    We report on electron spin resonance (ESR) studies of the spin relaxation in Cs2CuCl4. The main source of the ESR linewidth at temperatures T≤150 K is attributed to the uniform Dzyaloshinskii-Moriya interaction. The vector ...
  • Spin dynamics in the low-dimensional magnet TiOCl 
    Zakharov D.; Deisenhofer J.; Krug Von Nidda H.; Lunkenheimer P.; Hemberger J.; Hoinkis M.; Klemm M.; Sing M.; Claessen R.; Eremin M.; Horn S.; Loidl A. (2006)
    We present detailed electron spin resonance investigations on single crystals of the low-dimensional quantum magnet TiOCl. The anisotropy of the g factor indicates a stable orbital configuration below room temperature and ...

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