Publications (10)
Spin ladders and quantum simulators for Luttinger liquids
S. Ward, P. Bouillot, H. Ryll +5
Magnetic insulators have proven to be usable as quantum simulators for itinerant interacting quantum systems. In particular the compound (CHN)CuBr (short (…
All-sky Search for Periodic Gravitational Waves in the Full S5 LIGO Data
J. Abadie, B. P. Abbott, R. Abbott +794
We report on an all-sky search for periodic gravitational waves in the frequency band 50-800 Hz and with the frequency time derivative in the range of 0 through -6e-9 Hz/s. Such a…
Search for enhanced magnetism at the interface between BiSe and EuSe
K. Prokeš, Chen Luo, H. Ryll +8
Enhanced magnetism has recently been reported for the topological-insulator/ferromagnet interface BiSe/EuS with Curie temperatures claimed to be raised above room temperatu…
Mutual induction of magnetic 3d and 4f order in multiferroic hexagonal ErMnO3
D. Meier, H. Ryll, K. Kiefer +4
The complex interplay between the 3d and 4f moments in hexagonal ErMnO3 is investigated by magnetization, optical second harmonic generation, and neutron-diffraction measurements.…
Luttinger-Liquid Behavior in the Alternating Spin-Chain System Copper Nitrate
B. Willenberg, H. Ryll, K. Kiefer +8
We determine the phase diagram of copper nitrate Cu(NO)2.5DO in the context of quantum phase transitions and novel states of matter. We establish this compound as…
120° Helical Magnetic Order in the Distorted Triangular Antiferromagnet alpha-CaCr2O4
S. Tóth, B. Lake, S. A. J. Kimber +9
α-CaCr2O4 is a distorted triangular antiferromagnet. The magnetic Cr3+ ions which have spin-3/2 and interact with their nearest neighbors via Heisenberg direct exchange interactio…
Experimental determination of exchange constants in antiferromagnetic MnAu
A. A. Sapozhnik, C. Luo, H. Ryll +4
MnAu is an important antiferromagnetic (AF) material for spintronics applications. Due to its very high Néel temperature of about 1500 K, some of the basic properties are diff…
Implementation and testing of the first prompt search for gravitational wave transients with electromagnetic counterparts
The LIGO Scientific Collaboration, Virgo Collaboration, J. Abadie +815
Aims. A transient astrophysical event observed in both gravitational wave (GW) and electromagnetic (EM) channels would yield rich scientific rewards. A first program initiating EM…
Thermodynamic Properties of the Anisotropic Frustrated Spin-chain Compound Linarite PbCuSO(OH)
M. Schäpers, A. U. B. Wolter, S. -L. Drechsler +18
We present a comprehensive macroscopic thermodynamic study of the quasi-one-dimensional (1D) frustrated spin-chain system linarite. Susceptibility, magnetization…
Search for Gravitational Waves from Low Mass Compact Binary Coalescence in LIGO's Sixth Science Run and Virgo's Science Runs 2 and 3
the LIGO Scientific Collaboration, the Virgo Collaboration, J. Abadie +796
We report on a search for gravitational waves from coalescing compact binaries using LIGO and Virgo observations between July 7, 2009 and October 20, 2010. We searched for signals…