Physical Review Letters

Magnetic-Field-Enhanced Incommensurate Magnetic Order in the Underdoped High-Temperature Superconductor YBa₂Cu₃O_6.45

By D. Haug, V. Hinkov, A. Suchaneck, D. S. Inosov, N. B. Christensen, Ch. Niedermayer, P. Bourges, Y. Sidis, J. T. Park, A. Ivanov, C. T. Lin, J. Mesot and B. Keimer
Phys. Rev. Lett. vol. 103, 017001 (2009)
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Magnetic-Field-Induced Soft-Mode Quantum Phase Transition in the High-Temperature Superconductor La_1.855Sr_0.145CuO₄: An Inelastic Neutron-Scattering Study

By J. Chang (picture/PSI), N. B. Christensen, Ch. Niedermayer, K. Lefmann, H. M. Rønnow, D. F. McMorrow, A. Schneidewind, P. Link, A. Hiess, M. Boehm, R. Mottl, S. Pailhe´s, N. Momono, M. Oda, M. Ido, and J. Mesot
Phys. Rev. Lett. vol 102, 177006 (2009)
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Anomalous Magnetic Excitations of Cooperative Tetrahedral Spin Clusters

By K. Prsa (picture/PSI), H. M. Rønnow, O. Zaharko, N. B. Christensen, J. Jensen, J. Chang, S. Streule, M. Jimenez-Ruiz, H. Berger, M. Prester, and J. Mesot
Phys. Rev. Lett. vol. 102, 177202 (2009)
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Quantum Effects in a Weakly Frustrated S =1/2 Two-Dimensional Heisenberg Antiferromagnet in an Applied Magnetic Field

By N. Tsyrulin (picture/PSI), T. Pardini, R.R.P. Singh, F. Xiao, P. Link, A. Schneidewind, A. Hiess, C. P. Landee, M. M. Turnbull, M. Kenzelmann
Phys. Rev. Lett, vol.102, 197201 (2009)
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Universal detector efficiency of a mesoscopic capacitor

By Simon E. Nigg and Markus Büttiker
Phys. Rev. Lett. vol 102, 236801 (2009)
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Reduced and projected two-particle entanglement at finite temperature

By Peter Samuelsson, Izhar Neder, and Markus Büttiker
Phys. Rev. Lett. vol. 102, 106804 (2009)
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Two-particle non-local Aharonov-Bohm effect from two single-particle emitters

By Janine Splettstoesser, Michael Moskalets, and Markus Büttiker
Phys. Rev. Lett. vol.103, 076804 (2009)
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Coupled Magnetic and Ferroelectric Domains in Multiferroic Ni₃V₂O₈

By I. Cabrera, M. Kenzelmann (picture/PSI), G. Lawes, Y. Chen, W.C. Chen, R. Erwin, T.R. Gentile, J.B. Leao, J.W. Lynn, N. Rogado, R.J. Cava, and C. Broholm
Phys. Rev. Lett. vol. 103, 087201 (2009)
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Orbital Order at Mn and O Sites and Absence of Zener Polaron Formation in Manganites

By M. García-Fernández (picture/PSI), U. Staub, Y. Bodenthin, V. Scagnoli, V. Pomjakushin, S. W. Lovesey, A. Mirone, J. Herrero-Martín, C. Piamonteze, and E. Pomjakushina
Phys. Rev. Lett. 103, 097205 (2009)
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Direct Observation of Charge Order and an Orbital Glass State in Multiferroic LuFe₂O₄

By A. M. Mulders, S. M. Lawrence, U. Staub (picture/PSI), M. Garcia-Fernandez, V. Scagnoli, C. Mazzoli, E. Pomjakushina, K. Conder, and Y. Wang
Phys. Rev. Lett. 103, 077602 (2009)
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