Hidden order and pseudogap of Pb-substituted Bi2201 studied by scanning tunneling microscopy and out-of-plane resistivity in magnetic fields

Kazutaka Kudo; Terukazu Nishizaki; Naoyuki Okumura; Takahiko Sasaki; Norio Kobayashi; Eiji Ohmichi; Toshihito Osada

doi:10.1142/s0217979207044202

Hidden order and pseudogap of Pb-substituted Bi2201 studied by scanning tunneling microscopy and out-of-plane resistivity in magnetic fields

Kazutaka Kudo, Terukazu Nishizaki, Naoyuki Okumura, Takahiko Sasaki, Norio Kobayashi, Eiji Ohmichi, Toshihito Osada

Institute for Materials Research (IMR) (institute affiliation only)

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

1 Citation (Scopus)

Abstract

We have performed measurements of the out-of-plane resistivity ρ_c in magnetic fields up to 40 T and the scanning tunneling microscopy (STM) in the Pb-substituted Bi2201. Two kinds of pseudogaps PG1 and PG2 are found at T*₁ and T*₂ below which the nonmetallic ρ_c starts to develop and to be suppressed in magnetic fields with decreasing temperature, respectively. The obtained phase diagram indicates that the pseudogap related to the superconductivity is not PG1 but PG2. STM images of the Bi(Pb)-O plane in the optimally doped sample show bright atom-strings at V≤10 mV. The observed structure may indicate the one-dimensional correlation which is different from the 4a × 4a structure reported in other systems.

Original language	English
Pages (from-to)	3208-3210
Number of pages	3
Journal	International Journal of Modern Physics B
Volume	21
Issue number	18-19
DOIs	https://doi.org/10.1142/s0217979207044202
Publication status	Published - 2007 Jul 30

Keywords

Hidden order
Out-of-plane resistivity
Pb-substituted Bi2201
Pseudogap
STM

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Condensed Matter Physics

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10.1142/s0217979207044202

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title = "Hidden order and pseudogap of Pb-substituted Bi2201 studied by scanning tunneling microscopy and out-of-plane resistivity in magnetic fields",

abstract = "We have performed measurements of the out-of-plane resistivity ρc in magnetic fields up to 40 T and the scanning tunneling microscopy (STM) in the Pb-substituted Bi2201. Two kinds of pseudogaps PG1 and PG2 are found at T*1 and T*2 below which the nonmetallic ρc starts to develop and to be suppressed in magnetic fields with decreasing temperature, respectively. The obtained phase diagram indicates that the pseudogap related to the superconductivity is not PG1 but PG2. STM images of the Bi(Pb)-O plane in the optimally doped sample show bright atom-strings at V≤10 mV. The observed structure may indicate the one-dimensional correlation which is different from the 4a × 4a structure reported in other systems.",

keywords = "Hidden order, Out-of-plane resistivity, Pb-substituted Bi2201, Pseudogap, STM",

author = "Kazutaka Kudo and Terukazu Nishizaki and Naoyuki Okumura and Takahiko Sasaki and Norio Kobayashi and Eiji Ohmichi and Toshihito Osada",

year = "2007",

month = jul,

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doi = "10.1142/s0217979207044202",

language = "English",

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T1 - Hidden order and pseudogap of Pb-substituted Bi2201 studied by scanning tunneling microscopy and out-of-plane resistivity in magnetic fields

AU - Kudo, Kazutaka

AU - Nishizaki, Terukazu

AU - Okumura, Naoyuki

AU - Sasaki, Takahiko

AU - Kobayashi, Norio

AU - Ohmichi, Eiji

AU - Osada, Toshihito

PY - 2007/7/30

Y1 - 2007/7/30

N2 - We have performed measurements of the out-of-plane resistivity ρc in magnetic fields up to 40 T and the scanning tunneling microscopy (STM) in the Pb-substituted Bi2201. Two kinds of pseudogaps PG1 and PG2 are found at T*1 and T*2 below which the nonmetallic ρc starts to develop and to be suppressed in magnetic fields with decreasing temperature, respectively. The obtained phase diagram indicates that the pseudogap related to the superconductivity is not PG1 but PG2. STM images of the Bi(Pb)-O plane in the optimally doped sample show bright atom-strings at V≤10 mV. The observed structure may indicate the one-dimensional correlation which is different from the 4a × 4a structure reported in other systems.

AB - We have performed measurements of the out-of-plane resistivity ρc in magnetic fields up to 40 T and the scanning tunneling microscopy (STM) in the Pb-substituted Bi2201. Two kinds of pseudogaps PG1 and PG2 are found at T*1 and T*2 below which the nonmetallic ρc starts to develop and to be suppressed in magnetic fields with decreasing temperature, respectively. The obtained phase diagram indicates that the pseudogap related to the superconductivity is not PG1 but PG2. STM images of the Bi(Pb)-O plane in the optimally doped sample show bright atom-strings at V≤10 mV. The observed structure may indicate the one-dimensional correlation which is different from the 4a × 4a structure reported in other systems.

KW - Hidden order

KW - Out-of-plane resistivity

KW - Pb-substituted Bi2201

KW - Pseudogap

KW - STM

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JO - International Journal of Modern Physics B

JF - International Journal of Modern Physics B

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ER -

Hidden order and pseudogap of Pb-substituted Bi2201 studied by scanning tunneling microscopy and out-of-plane resistivity in magnetic fields

Abstract

Keywords

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