Zobrazeno 1 - 10
of 69
pro vyhledávání: '"Lamsal, Jagat"'
Autor:
Heitmann, Tom, Lamsal, Jagat, Watson, Shannon, Erwin, Ross, Chen, Wangchun, Zhao, Yang, Montfrooij, Wouter
We have identified low-energy magnetic excitations in a doped quantum critical system by means of polarized neutron scattering experiments. The presence of these excitations could explain why Ce(Fe$_{0.76}$Ru$_{0.24}$)$_2$Ge$_2$ displays dynamical sc
Externí odkaz:
http://arxiv.org/abs/1610.01224
Autor:
Lamsal, Jagat, Montfrooij, Wouter
Publikováno v:
Phys. Rev. B 93, 214513 (2016)
Resonant X-ray scattering experiments on high-temperature superconductors and related cuprates have revealed the presence of intense paramagnon scattering at high excitation energies, of the order of several hundred meV. The excitation energies appea
Externí odkaz:
http://arxiv.org/abs/1603.08805
Autor:
Zhang, Qiang, Fernandes, Rafael M., Lamsal, Jagat, Yan, Jiaqiang, Chi, Songxue, Tucker, Gregory S., Pratt, Daniel K., Lynn, Jeffrey W., McCallum, R. W., Canfield, Paul C., Lograsso, Thomas A., Goldman, Alan I., Vaknin, David, McQueeney, Robert J.
Publikováno v:
Phys. Rev. Lett. 114, 057001 (2015)
Inelastic neutron scattering was employed to investigate the impact of electronic nematic order on the magnetic spectra of LaFeAsO and Ba(Fe$_{0.953}$Co$_{0.047}$)$_{2}$As$_{2}$. These materials are ideal to study the paramagnetic-nematic state, sinc
Externí odkaz:
http://arxiv.org/abs/1410.6855
Autor:
Pradheesh, R., Nair, Harikrishnan S., Kumar, C. M. N., Lamsal, Jagat, Nirmala, R., Santhosh, P. N., Yelon, W. B., Malik, S. K., Sankaranarayanan, V., Sethupathi, K.
We report the observation of spin glass state in the double perovskite oxide Sr$_{2}$FeCoO$_{6}$ prepared through sol-gel technique. Initial structural studies using x rays reveal that the compound crystallizes in tetragonal $I 4/m$ structure with la
Externí odkaz:
http://arxiv.org/abs/1111.5136
The presence of magnetic clusters has been verified in both antiferromagnetic and ferromagnetic quantum critical systems. We review some of the strongest evidence for strongly doped quantum critical systems (Ce(Ru$_{0.24}$Fe$_{0.76}$)$_2$Ge$_2$) and
Externí odkaz:
http://arxiv.org/abs/1109.5956
In a recent paper, Custers {\it et al.} \cite{custers} argue for the existence of a new metallic quantum critical phase at 0 K in the Ge-doped heavy-fermion system YbRh$_2$Si$_2$ in the presence of magnetic frustration. In here we discuss the consequ
Externí odkaz:
http://arxiv.org/abs/1012.3379
Autor:
Heitmann, Thomas, Schmets, Alexander, Gaddy, John, Lamsal, Jagat, Petrovic, Marcus, Montfrooij, Wouter, Vojta, Thomas
We present neutron scattering results on the magnetic excitations in the spinel compounds Li$_x$[Mn$_{1.96}$Li$_{0.04}$]O$_4$ (x= 0.2, 0.6, 0.8, 1.0). We show that the dominant excitations below T ~ 70 K are determined by clusters of Mn^4+ ions, and
Externí odkaz:
http://arxiv.org/abs/0902.4412
Autor:
Montfrooij, Wouter, Lamsal, Jagat, Aronson, Meigan, Bennett, Marcus, de Visser, Anne, Kai, Huang Ying, Huy, Nguyen Thanh, Yethiraj, Mohana, Lumsden, Mark, Qiu, Yiming
The competition between the tendency of magnetic moments to order at low temperatures, and the tendency of conduction electrons to shield these moments, can result in a phase transition that takes place at zero Kelvin, the quantum critical point (QCP
Externí odkaz:
http://arxiv.org/abs/cond-mat/0606703
Autor:
Pradheesh, R., Nair, Harikrishnan S., Kumar, C. M. N., Lamsal, Jagat, Nirmala, R., Santhosh, P. N., Yelon, W. B., Malik, S. K., Sankaranarayanan, V., Sethupathi, K.
Publikováno v:
Journal of Applied Physics; Mar2012, Vol. 111 Issue 5, p053905, 7p, 1 Diagram, 3 Charts, 5 Graphs
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