Zobrazeno 1 - 10
of 1 549
pro vyhledávání: '"Moessner R"'
Band structures are ubiquitous in condensed matter physics and their symmetries constrain possible degeneracies, topology and response functions across a broad range of different systems. Here we address the question: given a parent crystal, what is
Externí odkaz:
http://arxiv.org/abs/2409.02999
Autor:
Smith, E. M., Schäfer, R., Dudemaine, J., Placke, B., Yuan, B., Morgan, Z., Ye, F., Moessner, R., Benton, O., Bianchi, A. D., Gaulin, B. D.
The insulating magnetic pyrochlore Ce$_2$Zr$_2$O$_7$ has attracted much attention as a quantum spin ice candidate with dipole-octupole character that permits spin ice phases based not only on magnetic dipole moments but also allows for even-more-exot
Externí odkaz:
http://arxiv.org/abs/2407.07640
Autor:
Figgemeier, T., Ünzelmann, M., Eck, P., Schusser, J., Crippa, L., Neu, J. N., Geldiyev, B., Kagerer, P., Buck, J., Kalläne, M., Hoesch, M., Rossnagel, K., Siegrist, T., Lim, L. -K., Moessner, R., Sangiovanni, G., Di Sante, D., Reinert, F., Bentmann, H.
We report the experimental discovery of orbital vortex lines in the three-dimensional (3D) band structure of a topological semimetal. Combining linear and circular dichroism in soft x-ray angle-resolved photoemission (SX-ARPES) with first-principles
Externí odkaz:
http://arxiv.org/abs/2402.10031
Autor:
Smith, E. M., Dudemaine, J., Placke, B., Schäfer, R., Yahne, D. R., DeLazzer, T., Fitterman, A., Beare, J., Gaudet, J., Buhariwalla, C. R. C., Podlesnyak, A., Xu, Guangyong, Clancy, J. P., Movshovich, R., Luke, G. M., Ross, K. A., Moessner, R., Benton, O., Bianchi, A. D., Gaulin, B. D.
Publikováno v:
Physical Review B 108, 054438 (2023)
We report new heat capacity measurements on single crystal Ce$_2$Zr$_2$O$_7$ down to $\sim$ 0.1 K in a magnetic field along the $[1,\bar{1}, 0]$ direction. These new measurements show that the broad hump in the zero-field heat capacity moves higher i
Externí odkaz:
http://arxiv.org/abs/2306.13183
Autor:
Dóra, B., Moessner, R.
Publikováno v:
Phys. Rev. B 108, L121105 (2023)
We analyse the near-adiabatic dynamics in a ramp through the critical point (CP) of the classical transverse field Ising chain. This is motivated, conceptually, by the fact that this CP -- unlike its quantum counterpart -- experiences no thermal or q
Externí odkaz:
http://arxiv.org/abs/2303.03781
Autor:
Yahne, D. R., Placke, B., Schäfer, R., Benton, O., Moessner, R., Powell, M., Kolis, J. W., Pasco, C. M., May, A. F., Frontzek, M. D., Smith, E. M., Gaulin, B. D., Calder, S., Ross, K. A.
Publikováno v:
D. R. Yahne et al., Phys. Rev. X 14, 011005 (2024)
The dipolar-octupolar (DO) pyrochlores, R$_2$M$_2$O$_7$ (R = Ce, Sm, Nd), are key players in the search for realizable novel quantum spin liquid (QSL) states as a large parameter space within the DO pyrochlore phase diagram is theorized to host QSL s
Externí odkaz:
http://arxiv.org/abs/2211.15140
Autor:
Opherden, D., Tepaske, M. S. J., Bärtl, F., Weber, M., Turnbull, M. M., Lancaster, T., Blundell, S. J., Baenitz, M., Wosnitza, J., Landee, C. P., Moessner, R., Luitz, D. J., Kühne, H.
We report the manifestation of field-induced Berezinskii-Kosterlitz-Thouless (BKT) correlations in the weakly coupled spin-1/2 Heisenberg layers of the molecular-based bulk material [Cu(pz)$_2$(2-HOpy)$_2$](PF$_6$)$_2$. Due to the moderate intralayer
Externí odkaz:
http://arxiv.org/abs/2209.11085
We present a theory of optimal topological textures in nonlinear sigma-models with degrees of freedom living in the Grassmannian $\mathrm{Gr}(M,N)$ manifold. These textures describe skyrmion lattices of $N$-component fermions in a quantising magnetic
Externí odkaz:
http://arxiv.org/abs/2107.10700
Autor:
Pili, L., Steppke, A., Barber, M. E., Jerzembeck, F., Hicks, C. W., Guruciaga, P. C., Prabhakaran, D., Moessner, R., Mackenzie, A. P., Grigera, S. A., Borzi, R. A.
We study single crystals of Dy$_2$Ti$_2$O$_7$ and Ho$_2$Ti$_2$O$_7$ under magnetic field and stress applied along their [001] direction. We find that many of the features that the emergent gauge field of spin ice confers to the macroscopic magnetic p
Externí odkaz:
http://arxiv.org/abs/2105.07977
Band topology is both constrained and enriched by the presence of symmetry. The importance of anti-unitary symmetries such as time reversal was recognized early on leading to the classification of topological band structures based on the ten-fold way
Externí odkaz:
http://arxiv.org/abs/2103.05656