Zobrazeno 1 - 10
of 92
pro vyhledávání: '"Windsor, Y."'
Autor:
Jung, H., Dong, S., Zahn, D., Vasileiadis, T., Seiler, H., Schneider, R., de Vasconcellos, S. Michaelis, Taylor, V. C. A., Bratschitsch, R., Ernstorfer, R., Windsor, Y. W.
We study monolayer WSe2 using ultrafast electron diffraction. We introduce an approach to quantitatively extract atomic-site-specific information, providing an element-specific view of incoherent atomic vibrations following femtosecond excitation. Vi
Externí odkaz:
http://arxiv.org/abs/2405.17099
Autor:
Ramakrishnan, M., Joly, Y., Meier, Q. N., Fechner, M., Porer, M., Parchenko, S., Windsor, Y. W., Bothschafter, E. M., Lichtenberg, F., Staub, U.
Hexagonal YMnO$_{3}$ is a prototype antiferromagnet which exhibits multiferroic behavior with the ferroelectric and magnetic transitions occurring at different temperatures. We observe an out-of-plane canting of the Mn$^{3+}$ magnetic moments using r
Externí odkaz:
http://arxiv.org/abs/2209.10378
Autor:
Maklar, J., Schüler, M., Windsor, Y. W., Nicholson, C. W., Puppin, M., Walmsley, P., Fisher, I. R., Wolf, M., Ernstorfer, R., Sentef, M. A., Rettig, L.
We present a complementary experimental and theoretical investigation of relaxation dynamics in the charge-density-wave (CDW) system TbTe$_3$ after ultrafast optical excitation. Using time- and angle-resolved photoemission spectroscopy, we observe an
Externí odkaz:
http://arxiv.org/abs/2108.12323
Autor:
Windsor, Y. W., Lee, S-E., Zahn, D., Borisov, V., Thonig, D., Kliemt, K., Ernst, A., Schüßler-Langeheine, C., Pontius, N., Staub, U., Krellner, C., Vyalikh, D. V., Eriksson, O., Rettig, L.
Ultrafast manipulation of the magnetic state of matter bears great potential for future information technologies. While demagnetisation in ferromagnets is governed by dissipation of angular momentum, materials with multiple spin sublattices, e.g. ant
Externí odkaz:
http://arxiv.org/abs/2108.03714
Autor:
Windsor, Y. W., Zahn, D., Kamrla, R., Feldl, J., Seiler, H., Chiang, C. -T., Ramsteiner, M., Widdra, W., Ernstorfer, R., Rettig, L.
Publikováno v:
Phys. Rev. Lett. 126, 147202 (2021)
We use femtosecond electron diffraction to study ultrafast lattice dynamics in the highly correlated antiferromagnetic (AF) semiconductor NiO. Using the scattering vector (Q) dependence of Bragg diffraction, we introduce a Q-resolved effective lattic
Externí odkaz:
http://arxiv.org/abs/2011.07289
Autor:
Maklar, J., Windsor, Y. W., Nicholson, C. W., Puppin, M., Walmsley, P., Esposito, V., Porer, M., Rittmann, J., Leuenberger, D., Kubli, M., Savoini, M., Abreu, E., Johnson, S. L., Beaud, P., Ingold, G., Staub, U., Fisher, I. R., Ernstorfer, R., Wolf, M., Rettig, L.
The interaction of many-body systems with intense light pulses may lead to novel emergent phenomena far from equilibrium. Recent discoveries, such as the optical enhancement of the critical temperature in certain superconductors and the photo-stabili
Externí odkaz:
http://arxiv.org/abs/2011.03230
Autor:
Maklar, J., Dong, S., Beaulieu, S., Pincelli, T., Dendzik, M., Windsor, Y. W., Xian, R. P., Wolf, M., Ernstorfer, R., Rettig, L.
Time-of-flight-based momentum microscopy has a growing presence in photoemission studies, as it enables parallel energy- and momentum-resolved acquisition of the full photoelectron distribution. Here, we report table-top extreme ultraviolet (XUV) tim
Externí odkaz:
http://arxiv.org/abs/2008.05829
Autor:
Windsor, Y. W., Ramakrishnan, M., Rettig, L., Alberca, A., Lippert, T., Schneider, C. W., Staub, U.
Publikováno v:
Phys. Rev. B 102, 214423 (2020)
Orthorhombic HoMnO3 is a multiferroic in which Mn antiferromagnetic order induces ferroelectricity. A second transition occurs within the multiferroic phase, in which a strong enhancement of the ferroelectric polarization occurs concomitantly to anti
Externí odkaz:
http://arxiv.org/abs/2008.01383
Autor:
Windsor, Y. W., Ernst, A., Kummer, K., Kliemt, K., Schüßler-Langeheine, Ch., Pontius, N., Staub, U., Chulkov, E. V., Krellner, C., Vyalikh, D. V., Rettig, L.
Publikováno v:
Commun Phys 3, 139 (2020)
A central prospect of antiferromagnetic spintronics is to exploit magnetic properties that are unavailable with ferromagnets. However, this poses the challenge of accessing such properties for readout and control. To this end, light-induced manipulat
Externí odkaz:
http://arxiv.org/abs/2002.01398
Autor:
Lantz, G., Neugebauer, M. J., Kubli, M., Savoini, M., Abreu, E., Tasca, K., Dornes, C., Esposito, V., Rittmann, J., Windsor, Y. W., Beaud, P., Ingold, G., Johnson, S. L.
Publikováno v:
Phys. Rev. Lett. 119, 227207 (2017)
The Prototypical magnetic memory shape alloy Ni$_2$MnGa undergoes various phase transitions as a function of temperature, pressure, and doping. In the low-temperature phases below 260 K, an incommensurate structural modulation occurs along the [110]
Externí odkaz:
http://arxiv.org/abs/1706.01685