STM studies on the hole doping dependence of the hidden order in Pb-doped Bi2201

K. Kudo; T. Nishizaki; N. Okumura; N. Kobayashi

doi:10.1016/j.physc.2007.04.226

STM studies on the hole doping dependence of the hidden order in Pb-doped Bi2201

K. Kudo, T. Nishizaki, N. Okumura, N. Kobayashi

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

We have performed STM measurements of the modulation-free Pb-doped Bi2201. In the overdoped (T_c = 7 K) and the optimally doped (T_c = 22 K) samples, the distorted patch arrangement has been observed in low-bias STM images below 50 mV. With decreasing doping level, the size of patches becomes smaller and their arrangement more orderly. In the optimally doped sample, furthermore, the bright atomic-strings have been detected at low bias-voltages below 10 mV. The distorted patch arrangement may be regarded as the two-dimensional superstructure incompletely formed due to the absence of the structural modulation and/or the disturbance from doped holes. The atomic-string indicates the one-dimensional electronic correlation and may be the new type hidden order.

Original language	English
Pages (from-to)	40-43
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	463-465
Issue number	SUPPL.
DOIs	https://doi.org/10.1016/j.physc.2007.04.226
Publication status	Published - Oct 1 2007
Externally published	Yes

Keywords

Bi-based cuprates
Hidden order
Modulation-free
Pb-doped Bi2201
Scanning tunneling microscopy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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title = "STM studies on the hole doping dependence of the hidden order in Pb-doped Bi2201",

abstract = "We have performed STM measurements of the modulation-free Pb-doped Bi2201. In the overdoped (Tc = 7 K) and the optimally doped (Tc = 22 K) samples, the distorted patch arrangement has been observed in low-bias STM images below 50 mV. With decreasing doping level, the size of patches becomes smaller and their arrangement more orderly. In the optimally doped sample, furthermore, the bright atomic-strings have been detected at low bias-voltages below 10 mV. The distorted patch arrangement may be regarded as the two-dimensional superstructure incompletely formed due to the absence of the structural modulation and/or the disturbance from doped holes. The atomic-string indicates the one-dimensional electronic correlation and may be the new type hidden order.",

keywords = "Bi-based cuprates, Hidden order, Modulation-free, Pb-doped Bi2201, Scanning tunneling microscopy",

author = "K. Kudo and T. Nishizaki and N. Okumura and N. Kobayashi",

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AU - Kudo, K.

AU - Nishizaki, T.

AU - Okumura, N.

AU - Kobayashi, N.

PY - 2007/10/1

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N2 - We have performed STM measurements of the modulation-free Pb-doped Bi2201. In the overdoped (Tc = 7 K) and the optimally doped (Tc = 22 K) samples, the distorted patch arrangement has been observed in low-bias STM images below 50 mV. With decreasing doping level, the size of patches becomes smaller and their arrangement more orderly. In the optimally doped sample, furthermore, the bright atomic-strings have been detected at low bias-voltages below 10 mV. The distorted patch arrangement may be regarded as the two-dimensional superstructure incompletely formed due to the absence of the structural modulation and/or the disturbance from doped holes. The atomic-string indicates the one-dimensional electronic correlation and may be the new type hidden order.

AB - We have performed STM measurements of the modulation-free Pb-doped Bi2201. In the overdoped (Tc = 7 K) and the optimally doped (Tc = 22 K) samples, the distorted patch arrangement has been observed in low-bias STM images below 50 mV. With decreasing doping level, the size of patches becomes smaller and their arrangement more orderly. In the optimally doped sample, furthermore, the bright atomic-strings have been detected at low bias-voltages below 10 mV. The distorted patch arrangement may be regarded as the two-dimensional superstructure incompletely formed due to the absence of the structural modulation and/or the disturbance from doped holes. The atomic-string indicates the one-dimensional electronic correlation and may be the new type hidden order.

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KW - Pb-doped Bi2201

KW - Scanning tunneling microscopy

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