Magnetostriction and Magnetostructural Domains in Antiferromagnetic YBa2Cu3O6

被引：17

作者：

Nafradi, B. ^{[1
]}

Keller, T. ^{[1
,2
]}

Hardy, F. ^{[3
]}

Meingast, C. ^{[3
]}

Erb, A. ^{[4
]}

Keimer, B. ^{[1
]}

机构：

[1] Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany

[2] Heinz Maier Leibnitz Zentrum MLZ, Max Planck Soc Outstn, D-85748 Garching, Germany

[3] Karlsruher Inst Technl KIT, Inst Festkorperphys, D-76344 Eggenstein Leopoldshafen, Germany

[4] Walter Meissner Inst Tieftemp Forsch, D-85748 Garching, Germany

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 04期

基金：

瑞士国家科学基金会;

关键词：

MAGNETORESISTANCE ANOMALIES; NEUTRON-SCATTERING; FINGERPRINTS; SPECTROMETER; MATTER; NMR;

D O I：

10.1103/PhysRevLett.116.047001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We use high-resolution neutron Larmor diffraction and capacitative dilatometry to investigate spontaneous and forced magnetostriction in undoped, antiferromagnetic YBa2Cu3O6.0, the parent compound of a prominent family of high-temperature superconductors. Upon cooling below the Neel temperature T-N = 420 K, Larmor diffraction reveals the formation of magnetostructural domains of characteristic size similar to 240 nm. In the antiferromagnetic state, dilatometry reveals a minute (4 x 10(-6)) orthorhombic distortion of the crystal lattice in external magnetic fields. We attribute these observations to exchange striction and spin-orbit coupling induced magnetostriction, respectively, and show that they have an important influence on the thermal and charge transport properties of undoped and lightly doped cuprates.

引用

页数：5

共 33 条

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