Zobrazeno 1 - 10
of 3 128
pro vyhledávání: '"Lorenz, W."'
Publikováno v:
In The Journal of Nutritional Biochemistry June 2023 116
Electron spin resonance experiments in the quasi-1D S=1/2 antiferromagnet K$_2$CuSO$_4$Cl$_2$ reveal opening of a gap in absence of magnetic ordering, as well as an anisotropic shift of the resonance magnetic field. These features of magnetic excitat
Externí odkaz:
http://arxiv.org/abs/1810.02675
Publikováno v:
Phys. Rev. B 97, 174431 (2018)
The field induced quantum phase transitions in the disorder-free and disordered samples of the spin ladder material (CH_3)_2CHNH_3Cu(Cl_{1-x}Br_x)_3 are studied using magnetic calorimetry and magnetic neutron diffraction on single crystal samples. Dr
Externí odkaz:
http://arxiv.org/abs/1803.00375
Autor:
Kuzian, R. O., Klingeler, R., Lorenz, W. E. A., Wizent, N., Nishimoto, S., Nitzsche, U., Rosner, H., Milosavljevic, D., Hozoi, L., Yadav, R., Richter, J., Hauser, A., Geck, J., Hayn, R., Yushankhai, V., Siurakshina, L., Monney, C., Schmitt, T., Thar, J., Roth, G., Ito, T., Yamaguchi, H., Matsuda, M., Johnston, S., Malek, J., Drechsler, S-L.
Publikováno v:
New J.Phys. 20 (2018) 058001
In a recent work devoted to the magnetism of Li$_{2}$CuO$_{2}$, Shu et al. [New J. Phys. 19 (2017) 023026] have proposed a "simplified" unfrustrated microscopic model that differs considerably from the models refined through decades of prior work. We
Externí odkaz:
http://arxiv.org/abs/1708.06335
Publikováno v:
Phys. Rev. B 92, 134417 (2015)
The electron spin resonance spectrum of a quasi 1D S=1/2 antiferromagnet K2CuSO4Br2 was found to demonstrate an energy gap and a doublet of resonance lines in a wide temperature range between the Curie--Weiss and Ne\`{e}l temperatures. This type of m
Externí odkaz:
http://arxiv.org/abs/1507.07518
Publikováno v:
J. Magn. Magn. Mater. 370, 62 (2014)
We report magnetic, specific heat and ESR measurements on a series of $S=1/2$ spin ladder compounds Cu(Qnx)(Cl$_{(1-x)}$Br$_{x}$)$_{2}$. Down to $T=2$ K all the observables can be described by the spin ladder model with about 1% of $S=1/2$ impurities
Externí odkaz:
http://arxiv.org/abs/1402.2532
Publikováno v:
Avian Diseases, 2019 Sep 01. 63(3), 531-538.
Externí odkaz:
https://www.jstor.org/stable/27033095
Publikováno v:
Phys. Rev. B. 88, 054422 (2013) [9 pages]
The disordered quasi-1D magnet BaCu2SiGeO7 is considered as one of the best physical realizations of the random Heisenberg chain model, which features an irregular distribution of the exchange parameters and whose ground state is predicted to be the
Externí odkaz:
http://arxiv.org/abs/1307.2814
Autor:
Rößler, S., Cherian, Dona, Lorenz, W., Doerr, M., Koz, C., Curfs, C., Prots, Yu., Rößler, U. K., Schwarz, U., Elizabeth, Suja, Wirth, S.
Publikováno v:
Phys. Rev. B 84, 174506 (2011)
Specific heat, resistivity, magnetic susceptibility, linear thermal expansion (LTE), and high-resolution synchrotron X-ray powder diffraction investigations of single crystals Fe1+yTe (0.06 < y < 0.15) reveal a splitting of a single, first-order tran
Externí odkaz:
http://arxiv.org/abs/1209.1209
Autor:
Drechsler, S. -L., Nishimoto, S., Kuzian, R., Malek, J., Lorenz, W. E. A., Richter, J., Brink, J. van den, Schmitt, M., Rosner, H.
Publikováno v:
Phys. Rev. Lett. 106, 219701 (2011)
We show that LiVCuO4 should be described by strongly ferromagnetically coupled Heisenberg antiferromagnetic chains (HAC) in sharp contrast with the effective exchange integrals Ji given in Enderle et al., Phys. Rev. Lett. vol. 104, 237207 (2010), and
Externí odkaz:
http://arxiv.org/abs/1006.5070