Zobrazeno 1 - 10
of 422
pro vyhledávání: '"Habicht K"'
Autor:
Hepting, M., Boyko, T. D., Zimmermann, V., Bejas, M., Suyolcu, Y. E., Puphal, P., Green, R. J., Zinni, L., Kim, J., Casa, D., Upton, M. H., Wong, D., Schulz, C., Bartkowiak, M., Habicht, K., Pomjakushina, E., Cristiani, G., Logvenov, G., Minola, M., Yamase, H., Greco, A., Keimer, B.
Publikováno v:
Phys. Rev. B 107, 214516 (2023)
We use resonant inelastic x-ray scattering (RIXS) at the O $K$- and Cu $K$-edges to investigate the doping- and temperature dependence of low-energy plasmon excitations in La$_{2-x}$Sr$_{x}$CuO$_4$. We observe a monotonic increase of the energy scale
Externí odkaz:
http://arxiv.org/abs/2306.15650
Autor:
Trepka, H., Keller, T., Krautloher, M., Xu, J., Habicht, K., Böhm, M., Keimer, B., Hepting, M.
Publikováno v:
Phys. Rev. Research 4, 023181 (2022)
Materials realizing the XY model in two dimensions (2D) are sparse. Here we use neutron triple-axis spectroscopy to investigate the critical static and dynamical magnetic fluctuations in the square-lattice antiferromagnets Ca$_{2}$RuO$_{4}$ and Ca$_{
Externí odkaz:
http://arxiv.org/abs/2206.01708
Publikováno v:
Phys. Rev. B 94, 180404(R) (2016)
In this article we investigate the time dependence of the gap mode of copper nitrate at various temperatures. We combine state-of-the-art theoretical calculations with high precision neutron resonance spin-echo measurements to understand the anomalou
Externí odkaz:
http://arxiv.org/abs/1607.04417
Autor:
Fritsch, K., Ehlers, G., Rule, K. C., Habicht, K., Ramazanoglu, M., Dabkowska, H. A., Gaulin, B. D.
Publikováno v:
Phys. Rev. B 92, 180404(R) (2015) - Published 5 November 2015
The application of a magnetic field transverse to the easy axis, Ising direction in the quasi-two-dimensional Kagome staircase magnet, Co3V2O8, induces three quantum phase transitions at low temperatures, ultimately producing a novel high field polar
Externí odkaz:
http://arxiv.org/abs/1511.02483
Autor:
Skoulatos, M., Toth, S., Roessli, B., Enderle, M., Habicht, K., Sheptyakov, D., Cervellino, A., Freeman, P. G., Reehuis, M., Stunault, A., McIntyre, G. J., Tung, L. D., Marjerrison, C., Pomjakushina, E., Brown, P. J., Khomskii, D. I., Rueegg, Ch., Kreyssig, A., Goldman, A. I., Goff, J. P.
We report on combined neutron and resonant x-ray scattering results, identifying the nature of the spin-orbital ground state and magnetic excitations in LuVO3 as driven by the orbital parameter. In particular, we distinguish between models based on o
Externí odkaz:
http://arxiv.org/abs/1503.07081
Autor:
Le, M. D., Quintero-Castro, D. L., Toft-Petersen, R., Groitl, F., Skoulatos, M., Rule, K. C., Habicht, K.
Publikováno v:
Nucl. Instrum. Methods Phys. Res. A, 729 (2013) 220-226
The upgrade of the cold neutron triple-axis spectrometer FLEXX is described. We discuss the characterisation of the gains from the new primary spectrometer, including a larger guide and double focussing monochromator, and present measurements of the
Externí odkaz:
http://arxiv.org/abs/1305.1126
Autor:
Coldea, R., Tennant, D. A., Wheeler, E. M., Wawrzynska, E., Prabhakaran, D., Telling, M., Habicht, K., Smeibidl, P., Kiefer, K.
Publikováno v:
Science 327, 177 (2010)
Quantum phase transitions take place between distinct phases of matter at zero temperature. Near the transition point, exotic quantum symmetries can emerge that govern the excitation spectrum of the system. A symmetry described by the E8 Lie group wi
Externí odkaz:
http://arxiv.org/abs/1103.3694
Autor:
Bao, Wei, Savici, A. T., Granroth, G. E., Broholm, C., Habicht, K., Qiu, Y., Hu, Jin, Liu, Tijiang, Mao, Z. Q.
Publikováno v:
Chinese Phys. Lett. 35, 127401 (2018)
From heavy fermions to cuprates and iron pnictides, a spin resonance is a staple of nearly magnetic superconductors. Possible explanations include a two-particle bound state or loss of magnon damping in the superconductor. While both scenarios sugges
Externí odkaz:
http://arxiv.org/abs/1002.1617
Autor:
Zheludev, A., Garlea, V. O., Tsvelik, A., Regnault, L. -P., Habicht, K., Kiefer, K., Roessli, B.
We study excitations in weakly interacting pairs of quantum spin ladders coupled through geometrically frustrated bonds. The ground state is a disordered spin liquid, that at high fields is replaced by an ordered chiral helimagnetic phase. The spectr
Externí odkaz:
http://arxiv.org/abs/0909.3355