Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Janossy, Andras"'
Field-induced antiferromagnetic (AF) fluctuations and magnetization are observed above the (zero-field) ordering temperature, T_N = 23 K by electron spin resonance in kappa-(BEDT-TTF)_2Cu[N(CN)_2]Cl, a quasi two-dimensional antiferromagnet with a lar
Externí odkaz:
http://arxiv.org/abs/1210.5381
Autor:
Náfrádi, Bálint, Olariu, Areta, Forró, László, Mézière, Cécile, Batail, Patrick, Jánossy, András
Publikováno v:
Phys. Rev. B 81, 224438 (2010)
We present a multi-frequency Electron Spin Resonance (ESR) study in the range of 4 GHz to 420 GHz of the quasi-one-dimensional, non-dimerized, quarter-filled Mott insulators, delta-(EDT-TTF-CONMe_2)_2X (X=AsF_6, Br). In the high temperature orthorhom
Externí odkaz:
http://arxiv.org/abs/1007.2251
Publikováno v:
Applied Magnetic Resonance 40, 47-63 (2011)
We describe a quasi-optical multifrequency ESR spectrometer operating in the 75-225 GHz range and optimized at 210 GHz for general use in condensed matter physics, chemistry and biology. The quasi-optical bridge detects the change of mm wave polariza
Externí odkaz:
http://arxiv.org/abs/0910.5504
The layered organic compounds, kappa-(BEDT-TTF)_2Cu[N(CN)_2X (X=Cl, Br) are metals at ambient temperatures. At low temperatures, the Cl compound is a weakly ferromagnetic Mott insulator while the isostructural Br compound is a superconductor. We find
Externí odkaz:
http://arxiv.org/abs/0812.2383
Publikováno v:
Phys. Rev. Lett. 91, 177001 (2003)
Hole induced changes in the antiferromagnetic structure of a lightly Ca doped Gd:Y_{1-x}Ca_xBa_2Cu_3O_6 copper oxide single crystal with x~0.008 is investigated by Gd3+ electron spin resonance. Holes do not localize to Ca2+ ions above 2.5 K since the
Externí odkaz:
http://arxiv.org/abs/cond-mat/0309258
Autor:
Feher, Titusz, Janossy, Andras, Oszlanyi, Gabor, Simon, Ferenc, Dabrowski, Bogdan, Klamut, Piotr W., Horvatic, Mladen, Williams, Grant V. M.
Publikováno v:
Phys. Rev. Lett. 85, 5627--5630 (2000)
We have measured the spin susceptibility of the underdoped high temperature superconductor, YBa2Cu4O8 by Gd^{3+} electron spin resonance in single crystals and aligned powders at several magnetic fields between 3 and 15.4 T. At low temperatures and h
Externí odkaz:
http://arxiv.org/abs/cond-mat/0010311
In a recent Letter Ando et al (cond-mat/9905071) discovered an anomalous magnetoresistance(MR) in hole doped antiferromagnetic YBa$_2$Cu$_3$O$_{6+x}$, which they attributed to charged stripes, i.e., to segregation of holes into lines. In this Comment
Externí odkaz:
http://arxiv.org/abs/cond-mat/0005275
Autor:
Simon, Ferenc, Janossy, Andras, Muranyi, Ferenc, Feher, Titusz, Shimoda, Hideo, Iwasa, Yoshihiro, Forro, Laszlo
We report on the magnetic resonance of NH_3K_3C_60 powders in the frequency range of 9 to 225 GHz. The observation of an antiferromagnetic resonance below the phase transition at 40 K is evidence for an antiferromagnetically ordered ground state. In
Externí odkaz:
http://arxiv.org/abs/cond-mat/9910303
Autor:
Koller, Daniel, Martin, Michael C., Stephens, Peter W., Mihaly, Laszlo, Pekker, Sandor, Janossy, Andras, Chauvet, Olivier, Forro, Laszlo
Publikováno v:
Appl. Phys. Lett. 66, 1015 (1995).
Infrared transmission, electron spin resonance, and X-ray diffraction measurements show unambiguously that RbC$_{60}$ and KC$_{60}$ are stable in air, in contrast to Rb$_{6}$C$_{60}$ which decomposes rapidly upon exposure. The specimens studied trans
Externí odkaz:
http://arxiv.org/abs/cond-mat/9501054
Publikováno v:
In Journal of Magnetic Resonance 2004 167(2):221-227
