Zobrazeno 1 - 10
of 1 343
pro vyhledávání: '"Assmus W"'
Autor:
Abadi, R. Hassan, Eremina, R. M., Hemmida, M., Dittl, A., Wolf, B., Assmus, W., Loidl, A., von Nidda, H. -A. Krug
Publikováno v:
Phys. Rev. B 103, 064420 (2021)
The quantum-spin S = 1=2 chain system Cs$_2$CuCl$_4$ is of high interest due to competing anti-ferromagnetic intra-chain J and inter-chain exchange J' interactions and represents a paramount example for Bose-Einstein condensation of magnons [R. Colde
Externí odkaz:
http://arxiv.org/abs/1905.11186
Autor:
Tutsch, U., Tsyplyatyev, O., Kuhnt, M., Postulka, L., Wolf, B., Cong, P. T., Ritter, F., Krellner, C., Aßmus, W., Schmidt, B., Thalmeier, P., Kopietz, P., Lang, M.
Publikováno v:
Phys. Rev. Lett. 123, 147202 (2019)
We report an experimental and theoretical study of the low-temperature specific heat $C$ and magnetic susceptibility $\chi$ of the layered anisotropic triangular-lattice spin-1/2 Heisenberg antiferromagnets Cs$_2$CuCl$_{4-x}$Br$_x$ with $x$ = 0, 1, 2
Externí odkaz:
http://arxiv.org/abs/1901.07799
Autor:
Tsyplyatyev, O., Kopietz, P., Tsui, Y., Wolf, B., Cong, P. T., van Well, N., Ritter, F., Krellner, C., Aßmus, W., Lang, M.
Publikováno v:
Phys. Rev. B 95, 045120 (2017)
We construct a many-body theory of magneto-elasticity in one dimension and show that the dynamical correlation functions of the quantum magnet, connecting the spins with phonons, involve all energy scales. Accounting for all magnetic states non-pertu
Externí odkaz:
http://arxiv.org/abs/1610.00295
Autor:
Cong, P. T., Postulka, L., Wolf, B., van Well, N., Ritter, F., Assmus, W., Krellner, C., Lang, M.
Magneto-acoustic investigations of the frustrated triangular-lattice antiferromagnet Cs2CuCl4 were performed for the longitudinal modes c11 and c33 in magnetic fields along the a-axis. The temperature dependence of the sound velocity at zero field sh
Externí odkaz:
http://arxiv.org/abs/1604.07968
Autor:
Streib, S., Kopietz, P., Cong, P. T., Wolf, B., Lang, M., van Well, N., Ritter, F., Assmus, W.
Publikováno v:
Phys. Rev. B 91, 041108(R) (2015)
The spin excitations in the spin-liquid phase of the anisotropic triangular lattice quantum antiferromagnet Cs$_2$CuCl$_4$ have been shown to propagate dominantly along the crystallographic $b$ axis. To test this dimensional reduction scenario, we ha
Externí odkaz:
http://arxiv.org/abs/1409.3039
Autor:
Fayzullin, M. A., Eremina, R. M., Eremin, M. V., Dittl, A., van Well, N., Ritter, F., Assmus, W., Deisenhofer, J., von Nidda, H. -A. Krug, Loidl, A.
Publikováno v:
Physical Review B 88, 174421 (2013)
We report on electron spin resonance (ESR) studies of the spin relaxation in Cs$_2$CuCl$_4$. The main source of the ESR linewidth at temperatures $T \leq 150$ K is attributed to the uniform Dzyaloshinskii-Moriya interaction. The vector components of
Externí odkaz:
http://arxiv.org/abs/1310.7804
Autor:
Krüger, N., Belz, S., Schossau, F., Haghighirad, A. A., Cong, P. T., Wolf, B., Gottlieb-Schoenmeyer, S., Ritter, F., Assmus, W.
Publikováno v:
Cryst. Growth Design 10, 4456 (2010)
Starting from Cs2CuCl4 and Cs2CuBr4 our project focuses on the growth of the Cs2CuCl4-xBrx mixed crystals from aqueous solution and the investigation of the occurring structural variations. The well known orthorhombic structure (space group Pnma) of
Externí odkaz:
http://arxiv.org/abs/1103.0139
Autor:
Wolf, B., Tsui, Y., Jaiswal-Nagar, D., Tutsch, U., Honecker, A., Removic-Langer, K., Hofmann, G., Prokofiev, A., Assmus, W., Donath, G., Lang, M.
Publikováno v:
PNAS 108, 6862 (2011)
The presence of a quantum critical point (QCP) can significantly affect the thermodynamic properties of a material at finite temperatures T. This is reflected, e.g., in the entropy landscape S(T, r) in the vicinity of a QCP, yielding particularly str
Externí odkaz:
http://arxiv.org/abs/1012.3328
Autor:
Cong, P. T., Wolf, B., de Souza, M., Krueger, N., Haghighirad, A. A., Schoenmeyer, S. Gottlieb, Ritter, F., Assmus, W., Opahle, I., Foyevtsova, K., Jeschke, H. O., Valenti, R., Wiehl, L., Lang, M.
We report on a systematic study of the magnetic properties on single crystals of the solid solution Cs$_2$CuCl$_{4-x}$Br$_x$ (0 $\leq$ x $\leq$ 4), which include the two known end-member compounds Cs$_2$CuCl$_4$ and Cs$_2$CuBr$_4$, classified as quas
Externí odkaz:
http://arxiv.org/abs/1012.2269
Publikováno v:
Phys. Rev. B 67, 052403 (2003)
We investigated temperature dependent Raman spectra of the one-dimensional spin-ladder compound SrCu2O3. At low temperatures a two-magnon peak is identified at 3160+/-10 cm^(-1) and its temperature dependence analyzed in terms of a thermal expansion
Externí odkaz:
http://arxiv.org/abs/0801.1303