Springer Theses

Hidden Order and Exotic Superconductivity in the Heavy-Fermion Compound URu2Si2

Authors: Okazaki, Ryuji

  • Describes precise magnetic torque measurement using micro cantilever and local magnetization measurement using micro-Hall array
  • Investigates the symmetry breaking in the hidden-order phase of URu2Si2 and vortex state in the superconducting phase
  • Covers observation of the vortex lattice melting transition in ultraclean URu2Si2 single crystals at sub-Kelvin temperatures
  • Nominated as an outstanding contribution by Kyoto University's Physics Department in 2013
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About this book

In this thesis, the author investigates hidden-order phase transition at T0 = 17.5 K in the heavy-fermion URu2Si2. The four-fold rotational symmetry breaking in the hidden order phase, which imposes a strong constraint on the theoretical model, is observed through the magnetic torque measurement. The translationally invariant phase with broken rotational symmetry is interpreted as meaning that the hidden-order phase is an electronic “nematic” phase. The observation of such nematicity in URu2Si2 indicates a ubiquitous nature among the strongly correlated electron systems.

The author also studies the superconducting state of URu2Si2 below Tc = 1.4 K, which coexists with the hidden-order phase. A peculiar vortex penetration in the superconducting state is found, which may be related to the rotational symmetry breaking in the hidden-order phase. The author also identifies a vortex lattice melting transition. This transport study provides essential clues to the underlying issue of quasiparticle dynamics as to whether a quasiparticle Bloch state is realized in the periodic vortex lattice.

About the authors

Dr.Ryuji Okazaki
Department of Physics, Nagoya University,
Chikusa, Nagoya 464-8602, Japan.

Table of contents (6 chapters)

  • Introduction

    Okazaki, Ryuji

    Pages 1-4

  • Heavy-Fermion Superconductor $$\mathrm{URu}_{2}\mathrm{Si}_{2}$$

    Okazaki, Ryuji

    Pages 5-18

  • Magnetic Torque Study on the Hidden-Order Phase

    Okazaki, Ryuji

    Pages 19-49

  • Lower Critical Field Study on the Superconducting Phase

    Okazaki, Ryuji

    Pages 51-72

  • Vortex Lattice Melting Transition

    Okazaki, Ryuji

    Pages 73-98

Buy this book

eBook $99.00
price for USA (gross)
  • ISBN 978-4-431-54592-7
  • Digitally watermarked, DRM-free
  • Included format: PDF, EPUB
  • ebooks can be used on all reading devices
  • Immediate eBook download after purchase
Hardcover $129.00
price for USA
  • ISBN 978-4-431-54591-0
  • Free shipping for individuals worldwide
  • Usually dispatched within 3 to 5 business days.
Softcover $129.00
price for USA
  • Customers within the U.S. and Canada please contact Customer Service at 1-800-777-4643, Latin America please contact us at +1-212-460-1500 (Weekdays 8:30am – 5:30pm ET) to place your order.
  • Due: October 13, 2016
  • ISBN 978-4-431-56359-4
  • Free shipping for individuals worldwide
Rent the ebook  
  • Rental duration: 1 or 6 month
  • low-cost access
  • online reader with highlighting and note-making option
  • can be used across all devices
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Bibliographic Information

Bibliographic Information
Book Title
Hidden Order and Exotic Superconductivity in the Heavy-Fermion Compound URu2Si2
Authors
Series Title
Springer Theses
Copyright
2013
Publisher
Springer Japan
Copyright Holder
Springer Japan
eBook ISBN
978-4-431-54592-7
DOI
10.1007/978-4-431-54592-7
Hardcover ISBN
978-4-431-54591-0
Softcover ISBN
978-4-431-56359-4
Series ISSN
2190-5053
Edition Number
1
Number of Pages
XIII, 102
Number of Illustrations and Tables
71 illustrations in colour
Topics