Zobrazeno 1 - 10
of 322
pro vyhledávání: '"Dalal, N S"'
Publikováno v:
Phys. Rev. B 96, 180408 (2017)
We discuss a general framework to address spin decoherence resulting from fluctuations in a spin Hamiltonian. We performed a systematic study on spin decoherence in the compound K$_6$[V$_{15}$As$_6$O$_{42}$(D$_2$O)] $\cdot$ 8D$_2$O, using high-field
Externí odkaz:
http://arxiv.org/abs/1505.03177
Publikováno v:
Phys. Rev. B Rapid Commun. vol 91, 140102(R) (2015)
We study the dynamics of inorganic antiferroelectric nanoclusters formed during an order-disorder transition and demonstrate the coexistence of the two phases in a region of 2-3 K around the transition temperature TN~215 K. Single crystals of NH4H2As
Externí odkaz:
http://arxiv.org/abs/1504.06124
Autor:
Martens, M., van Tol, J., Dalal, N. S., Bertaina, S., Barbara, B., Tsukerblat, B., Müller, A., Garai, S., Miyashita, S., Chiorescu, I.
Publikováno v:
Phys. Rev. B 89, 195439, 2014
The molecular compound K$_6$[V$^{IV}_{15}$As$^{III}_6$O$_{42}$(H$_2$O)] $\cdot$ 8H$_2$O, in short V$_{15}$, has shown important quantum effects such as coherent spin oscillations. The details of the spin quantum dynamics depend on the exact form of t
Externí odkaz:
http://arxiv.org/abs/1405.7000
Autor:
Choi, K. -Y., Wang, Z. -X., Ozarowski, A., van Tol, J., Zhou, H. D., Wiebe, C. R., Dalal, N. S.
We report ac susceptibility and high-frequency electron spin resonance (ESR) measurements on the geometrically frustrated compound Ba$_3$NbFe$_3$Si$_2$O$_{14}$ with the N\'{e}el temperature $T_N=27 K$. An unusually large frequency-dependence of ac su
Externí odkaz:
http://arxiv.org/abs/1108.1853
Autor:
Nellutla, S., Pati, M., Jo, Y. -J., Zhou, H. D., Moon, B. H., Pajerowski, D. M., Yoshida, Y., Janik, J. A., Balicas, L., Lee, Y., Meisel, M. W., Takano, Y., Wiebe, C. R., Dalal, N. S.
Publikováno v:
Phys. Rev. B 81, 064431 (2010) [6 pages]
The magnetic properties of alkali-metal peroxychromate K$_2$NaCrO$_8$ are governed by the $S = 1/2$ pentavalent chromium cation, Cr$^{5+}$. Specific heat, magnetocalorimetry, ac magnetic susceptibility, torque magnetometry, and inelastic neutron scat
Externí odkaz:
http://arxiv.org/abs/0912.1507
Publikováno v:
J. Appl. Phys., 106 (4), 046106 (2009)
On-chip Electron Spin Resonance (ESR) of magnetic molecules requires the ability to precisely position nanosized samples in antinodes of the electro-magnetic field for maximal magnetic interaction. A method is developed to entrap micro-crystals conta
Externí odkaz:
http://arxiv.org/abs/0908.3038
Publikováno v:
Phys. Rev. Lett. 103, 247201 (2009)
At a quantum critical point (QCP) -- a zero-temperature singularity in which a line of continuous phase transition terminates -- quantum fluctuations diverge in space and time, leading to exotic phenomena that can be observed at non-zero temperatures
Externí odkaz:
http://arxiv.org/abs/0908.0264
Publikováno v:
Phys. Rev. Lett. 102, 050501 (2009)
Large spin Mn2+ ions (S=5/2) diluted in a non-magnetic MgO matrix of high crystalline symmetry are used to realize a six level system that can be operated by means of multi-photon coherent Rabi oscillations. This spin system has a very small anisotro
Externí odkaz:
http://arxiv.org/abs/0812.4534
Autor:
Lumata, L. L., Choi, K. -Y., Besara, T., Hoch, M. J. R., Zhou, H. D., Brooks, J. S., Kuhns, P. L., Reyes, A. P., Dalal, N. S., Wiebe, C. R.
We report on the use of $^{69,71}$Ga nuclear magnetic resonance to probe spin dynamics in the rare-earth kagom\'{e} system Pr$_3$Ga$_5$SiO$_{14}$. We find that the spin-lattice relaxation rate $^{69}1/T_1$ exhibits a maximum around 30 K, below which
Externí odkaz:
http://arxiv.org/abs/0811.3367
Publikováno v:
Phys. Rev. B 78, 054426 (2008)
Cr^5+ doped K_3NbO_8, considered to be useful as a electron spin qubit, has been investigated by pulsed X-band (~9.7 GHz) and 240 GHz electron paramagnetic resonance and electron nuclear double resonance (ENDOR). Comparison of the low temperature ele
Externí odkaz:
http://arxiv.org/abs/0805.4428