Zobrazeno 1 - 10
of 206
pro vyhledávání: '"Landee, C."'
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
Autor:
Opherden, D., Bärtl, F., Yamamoto, Sh., Zhang, Z. T., Luther, S., Molatta, S., Wosnitza, J., Baenitz, M., Heinmaa, I., Stern, R., Landee, C. P., Kühne, H.
Publikováno v:
Phys. Rev. B 103, 014428 (2021)
We present a detailed $^{31}$P nuclear magnetic resonance (NMR) study of the molecular rotation in the compound [Cu(pz)$_{2}$(2-HOpy)$_{2}$](PF$_{6}$)$_{2}$, where pz = C$_4$H$_4$N$_2$ and 2-HOpy = C$_5$H$_4$NHO. Here, a freezing of the PF$_6$ rotati
Externí odkaz:
http://arxiv.org/abs/2010.06335
Autor:
Opherden, D., Nizar, N., Richardson, K., Monroe, J. C., Turnbull, M. M., Polson, M., Vela, S., Blackmore, W. J. A., Goddard, P. A., Singleton, J., Choi, E. S., Xiao, F., Williams, R. C., Lancaster, T., Pratt, F. L., Blundell, S. J., Skourski, Y., Uhlarz, M., Ponomaryov, A. N., Zvyagin, S. A., Wosnitza, J., Baenitz, M., Heinmaa, I., Stern, R., Kühne, H., Landee, C. P.
Publikováno v:
Phys. Rev. B 102, 064431 (2020)
We report on a comprehensive characterization of the newly synthesized Cu$^{2+}$-based molecular magnet [Cu(pz)$_2$(2-HOpy)$_2$](PF$_6$)$_2$ (CuPOF), where pz = C$_4$H$_4$N$_2$ and 2-HOpy = C$_5$H$_4$NHO. From a comparison of theoretical modeling to
Externí odkaz:
http://arxiv.org/abs/2005.12058
Autor:
Barbero, N., Medarde, M., Shang, T., Sheptyakov, D., Landee, C. P., Mesot, J., Ott, H. -R., Shiroka, T.
Publikováno v:
Phys. Rev. Materials 3, 053602 (2019)
Cu(pz)$_2$(ClO$_4$)$_2$ (with pz denoting pyrazine C$_4$H$_4$N$_2$) is a two-dimensional spin-1/2 square-lattice antiferromagnet with $T_{\mathrm{N}}$ = 4.24 K. Due to a persisting focus on the low-temperature magnetic properties, its room-temperatur
Externí odkaz:
http://arxiv.org/abs/1904.12802
Autor:
Möller, J. S., Lancaster, T., Blundell, S. J., Pratt, F. L., Baker, P. J., Xiao, F., Williams, R. C., Hayes, W., Turnbull, M. M., Landee, C. P.
Publikováno v:
Phys. Rev. B 95, 020402 (2017)
We demonstrate that quantum-critical spin dynamics can be probed in high magnetic fields using muon-spin relaxation ($\mu^{+}$SR). Our model system is the strong-leg spin ladder bis(2,3-dimethylpyridinium) tetrabromocuprate (DIMPY). In the gapless To
Externí odkaz:
http://arxiv.org/abs/1608.05059
Publikováno v:
Phys. Rev. B 93, 054425 (2016)
Cu(pz)2(ClO4)2 (with pz denoting pyrazine, C4H4N2) is among the best realizations of a two-dimensional spin-1/2 square-lattice antiferromagnet. Below T_N = 4.21 K, its weak interlayer couplings induce a 3D magnetic order, strongly influenced by exter
Externí odkaz:
http://arxiv.org/abs/1602.08288
Publikováno v:
Phys. Rev. B 93, 094412 (2016)
Raman spectroscopy is used to study magnetic excitations in the quasi one dimensional $S=1/2$ quantum spin systems Cu(Qnx)(Cl$_{1-x}$Br$_x$)$_2$. The low energy spectrum is found to be dominated by a two-magnon continuum as expected from the numerica
Externí odkaz:
http://arxiv.org/abs/1510.06360
Autor:
Ozerov, M., Maksymenko, M., Wosnitza, J., Honecker, A., Landee, C. P., Turnbull, M. M., Furuya, S. C., Giamarchi, T., Zvyagin, S. A.
Publikováno v:
Phys. Rev. B 92, 241113 (2015)
Magnetic excitations in the strong-leg quantum spin ladder compound (C$_7$H$_{10}$N)$_2$CuBr$_4$ (known as DIMPY) in the field-induced Tomonaga-Luttinger spin liquid phase are studied by means of high-field electron spin resonance (ESR) spectroscopy.
Externí odkaz:
http://arxiv.org/abs/1509.02056
Autor:
Ponomaryov, A. N., Ozerov, M., Zviagina, L., Wosnitza, J., Povarov, K. Yu., Xiao, F., Zheludev, A., Landee, C., Čižmár, E., Zvyagin, A. A., Zvyagin, S. A.
Publikováno v:
Phys. Rev. B 93, 134416 (2016)
Cu(C$_8$H$_6$N$_2$)Cl$_2$, a strong-rung spin-1/2 Heisenberg ladder compound, is probed by means of electron spin resonance (ESR) spectroscopy in the field-induced gapless phase above $H_{c1}$. The temperature dependence of the ESR linewidth is analy
Externí odkaz:
http://arxiv.org/abs/1509.01022
Publikováno v:
J. Magn. Magn. Mater. 370, 62 (2014)
We report magnetic, specific heat and ESR measurements on a series of $S=1/2$ spin ladder compounds Cu(Qnx)(Cl$_{(1-x)}$Br$_{x}$)$_{2}$. Down to $T=2$ K all the observables can be described by the spin ladder model with about 1% of $S=1/2$ impurities
Externí odkaz:
http://arxiv.org/abs/1402.2532