Phase-Sensitive Observation of a Spin-Orbital Mott State in Sr 2 IrO 4-Reference-Cited by-同舟云学术

Phase-Sensitive Observation of a Spin-Orbital Mott State in Sr 2 IrO 4

Published:2009-03-06 Issue:5919 Volume:323 Page:1329-1332
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Kim B. J.¹²³⁴⁵,Ohsumi H.¹²³⁴⁵,Komesu T.¹²³⁴⁵,Sakai S.¹²³⁴⁵,Morita T.¹²³⁴⁵,Takagi H.¹²³⁴⁵,Arima T.¹²³⁴⁵

Affiliation:

1. Department of Advanced Materials, University of Tokyo, Kashiwa 277-8561, Japan.

2. Magnetic Materials Laboratory, RIKEN Advanced Science Institute, Wako 351-0198, Japan.

3. RIKEN SPring-8 Center, Sayo 679-5148, Japan.

4. Department of Physical Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan.

5. Department of Physics, Kwansei-Gakuin University, Sanda 669-1337, Japan.

Abstract

Measurement of the quantum-mechanical phase in quantum matter provides the most direct manifestation of the underlying abstract physics. We used resonant x-ray scattering to probe the relative phases of constituent atomic orbitals in an electronic wave function, which uncovers the unconventional Mott insulating state induced by relativistic spin-orbit coupling in the layered 5 d transition metal oxide Sr 2 IrO 4 . A selection rule based on intra-atomic interference effects establishes a complex spin-orbital state represented by an effective total angular momentum = 1/2 quantum number, the phase of which can lead to a quantum topological state of matter.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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