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Quasiparticle spectroscopy and high-field phase diagrams of cuprate superconductors - An investigation of competing orders and quantum criticality

Yeh, N.-C. and Chen, C.-T. and Zapf, V. S. and Beyer, A. D. and Hughes, C. R. and Park, M.-S. and Kim, K.-H. and Lee, S.-I. (2005) Quasiparticle spectroscopy and high-field phase diagrams of cuprate superconductors - An investigation of competing orders and quantum criticality. International Journal of Modern Physics B, 19 (1-3). pp. 285-294. ISSN 0217-9792. http://resolver.caltech.edu/CaltechAUTHORS:YEHijmpb05

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Abstract

We present scanning tunneling spectroscopic and high-field thermodynamic studies of hole- and electron-doped (p- and n-type) cuprate superconductors. Our experimental results are consistent with the notion that the ground state of cuprates is in proximity to a quantum critical point (QCP) that separates a pure superconducting (SC) phase from a phase comprised of coexisting SC and a competing order, and the competing order is likely a spin-density wave (SDW). The effect of applied magnetic field, tunneling current, and disorder on the revelation of competing orders and on the low-energy excitations of the cuprates is discussed.


Item Type:Article
Additional Information:© 2005 World Scientific Publishing Company. Received 11 June 2004. The work at Caltech is supported by the National Science Foundation through Grants #DMR-0405088 and #DMR-0103045, and at the Pohang University by the Ministry of Science and Technology of Korea through the Creative Research Initiative Program. The pulsed-field experiments were performed at the National High Magnetic Field Laboratory facilities in the Los Alamos National Laboratory under the support of the National Science Foundation. http://arxiv.org/abs/cond-mat/0408100
Subject Keywords:competing orders, quantum critical point, spin density waves, pseudogap, high-temperature superconductors, wave pairing symmetry, single-crystals, impurity atoms, BI2SR2CACU2O8+DELTA, fluctuations, state, YBA2CU3O7-DELTA, transition
Record Number:CaltechAUTHORS:YEHijmpb05
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:YEHijmpb05
Alternative URL:http://dx.doi.org/10.1142/S0217979205028426
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:866
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:31 Oct 2005
Last Modified:26 Dec 2012 08:41

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