page_title: Covalent superconductor
hierarchical_section_title: Covalent superconductor
caption_attribution_description: Parts of a high pressure cell after experiment: (1) two parts of a graphite bar (heater), (2) a ball-like sample of boron-doped diamond recovered from the hole in the bar.
context_page_description: Covalent superconductors are superconducting materials where the atoms are linked by covalent bonds. The first such material was boron-doped synthetic diamond grown by the high-pressure high-temperature method. The discovery had no practical importance, but surprised most scientists as superconductivity had not been observed in covalent semiconductors, including diamond and silicon.
context_section_description: Covalent superconductors are superconducting materials where the atoms are linked by covalent bonds. The first such material was boron-doped synthetic diamond grown by the high-pressure high-temperature (HPHT) method. The discovery had no practical importance, but surprised most scientists as superconductivity had not been observed in covalent semiconductors, including diamond and silicon.
caption: Parts of a high pressure cell after the synthesis of heavily boron doped superconducting diamond. The diamond (black ball) is located between two graphite heaters
exif: {"Image ImageDescription": "", "Image Make": "NIKON", "Image Model": "E4800", "Image Orientation": "Horizontal (normal)", "Image Software": "E4800v1.2", "Image DateTime": "2008:10:01 11:35:31", "Image YCbCrPositioning": "Co-sited", "Image ExifOffset": "2248", "Image Padding": "[]", "Image OffsetSchema": "3830", "EXIF ExposureTime": "1/18", "EXIF FNumber": "27/10", "EXIF ExposureProgram": "Program Normal", "EXIF ISOSpeedRatings": "50", "EXIF ExifVersion": "0220", "EXIF DateTimeOriginal": "2008:10:01 11:35:31", "EXIF DateTimeDigitized": "2008:10:01 11:35:31", "EXIF ComponentsConfiguration": "YCbCr", "EXIF CompressedBitsPerPixel": "3", "EXIF ExposureBiasValue": "0", "EXIF MaxApertureValue": "29/10", "EXIF MeteringMode": "Pattern", "EXIF LightSource": "Unknown", "EXIF Flash": "Flash did not fire, compulsory flash mode", "EXIF FocalLength": "6", "EXIF FlashPixVersion": "0100", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "2288", "EXIF ExifImageLength": "1712", "EXIF FileSource": "Digital Camera", "EXIF SceneType": "Directly Photographed", "EXIF CustomRendered": "Normal", "EXIF ExposureMode": "Auto Exposure", "EXIF WhiteBalance": "Auto", "EXIF DigitalZoomRatio": "0", "EXIF FocalLengthIn35mmFilm": "36", "EXIF SceneCaptureType": "Standard", "EXIF GainControl": "None", "EXIF Contrast": "Normal", "EXIF Saturation": "Normal", "EXIF Sharpness": "Normal", "EXIF SubjectDistanceRange": "0", "EXIF Padding": "[]", "EXIF OffsetSchema": "2096"}